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MDS Reports Second Quarter 2006 Financial Results

Organic revenue growth of 10% in life sciences and adjusted EBITDA up

69% organically

TORONTO, June 8 /PRNewswire-FirstCall/ - MDS Inc. (TSX: MDS; NYSE: MDZ), a company providing a range of enabling products and services to the global life sciences markets, today reported its second quarter 2006 results.

    Quarterly Highlights

        -  10% organic revenue growth in life sciences
        -  28% growth in adjusted EBITDA (69% organic)
        -  Montreal bioanalytical issues reduced EBITDA by $7 million
        -  $0.12 in GAAP EPS, $0.22 in adjusted EPS, up 22%
        -  Appointed David Spaight as President, MDS Pharma Services
        -  Declared a quarterly cash dividend of $0.0325 per share

For the quarter, MDS's consolidated revenue was $369 million, up 9% organically over the same period last year. Adjusted EBITDA was $69 million, up 69% organically, driven by strong results in the isotopes, instruments and diagnostics businesses. Adjusted earnings per share increased 22% to $0.22 compared to $0.18 in the same period last year. Selling, general and administrative costs were down $9 million over the second quarter of 2005.

    Financial Highlights
                                                               % Change
                                                          -------------------
    ($ millions)                        Q2 2006   Q2 2005  Reported  Organic
    -------------------------------------------------------------------------
    Revenue                               $369      $362        2%        9%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EBITDA:
      $                                    $69       $54       28%       69%
      %                                    19%       15%        na        na
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EPS                         $0.22     $0.18       22%        na
    GAAP EPS                             $0.12     $0.21      (43%)       na
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

MDS continued to execute its strategy to focus the Company on its life sciences businesses. All MDS businesses, with the exception of the bioanalytical business, delivered organic growth in revenues and adjusted EBITDA relative to the second quarter of 2005. The instruments, isotopes and diagnostics businesses all drove overall performance, with organic adjusted EBITDA growths of 54%, 46% and 38%, respectively. The process of executing on a value maximizing transaction for the diagnostics business continues and is expected to result in a transaction in 2006.

"This is our third quarter of organic revenue and adjusted EBITDA growth at MDS despite challenges with our bioanalytical business in Montreal," said Stephen P. DeFalco, President and Chief Executive Officer, MDS Inc. "Completing the FDA review in a high-quality way and concluding the diagnostics transaction are my top priorities for the remainder of 2006," he added.

    Operating Segment Results

    MDS Pharma Services
                                                               % Change
                                                          -------------------
    ($ millions)                        Q2 2006   Q2 2005  Reported  Organic
    -------------------------------------------------------------------------
    Revenue:
      Early-stage                          $78       $84       (7%)       1%
      Late-stage                            52        53       (2%)       6%
    -------------------------------------------------------------------------
                                          $130      $137       (5%)       3%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EBITDA:
      $                                     $3         -       n/m       n/m
      %                                     2%         -       n/m       n/m
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

MDS Pharma Services revenue for the second quarter increased 3% on an organic basis over the same period last year. Revenues in the sector continue to be impacted by the bioanalytical business in Montreal. Excluding the bioanalytical business, organically, revenue grew by 7% and EBITDA improved by $9 million. Backlog was up 31% year-over-year to US$400 million and was up 8% sequentially, as we continue to win late-stage global contracts.

During the second quarter, MDS focused significant resources on completing the review of certain past studies in its Montreal bioanalytical facility and invested $7 million in this effort. Under new leadership, the speed and focus with which the bioanalytical review is being conducted has improved significantly. MDS activities are expected to take place over the remainder of the calendar year, with continued impact on the cost structure of this business.

During the quarter, capacity expansions in our early-stage business continued with a 42,000 square foot expansion in drug safety assessment capacity in Lyon, a 50-bed phase one clinic expansion in Lincoln, and the re-opening of the 55-bed phase one clinic in New Orleans. In addition, the Company has initiated a 300-bed expansion project in Phoenix to capitalize on North American demand for phase one clinic capacity. The Phoenix expansion is slated for completion in mid-2007.

    MDS Nordion
                                                               % Change
                                                          -------------------
    ($ millions)                        Q2 2006   Q2 2005  Reported  Organic
    -------------------------------------------------------------------------
    Revenue                                $83       $75       11%       23%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EBITDA:
      $                                    $25       $18       39%       46%
      %                                    30%       24%        na        na
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

MDS Nordion revenue for the second quarter grew 23% year-over-year on an organic basis, driven by the strength of the medical imaging business. Results for the medical imaging business were positively impacted as MDS Nordion stepped in to offset supply shortages related to a competitor's voluntary recall of technetium generators. EBITDA increased organically by 46% year-over- year in the second quarter of 2006.

During the second quarter, MDS Nordion announced two molecular imaging agreements, one with Molecular Insight Pharmaceuticals to manufacture and supply Zemiva(TM), a molecular imaging pharmaceutical being developed for cardiac ischemia, or insufficient blood flow to the heart and the other with Bradmer Pharmaceuticals Inc. for the development and clinical trial supply of Neuradiab, a monoclonal antibody conjugated to an isotope used to treat glioblastoma multiforme, the most common and deadly form of brain cancer.

    MDS Sciex
                                                               % Change
                                                          -------------------
    ($ millions)                        Q2 2006   Q2 2005  Reported  Organic
    -------------------------------------------------------------------------
    Revenue                                $66       $65        2%        8%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EBITDA:
      $                                    $22       $16       38%       54%
      %                                    33%       25%        na        na
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

MDS Sciex revenue for the second quarter grew 8% year-over-year on an organic basis. Organic EBITDA grew 54% year-over-year, driven by new products introduced over the last 12 months, particularly the API 4000(TM), API 5000(TM), 3200 Q TRAP(R), and 4800 MALDI TOF/TOF(TM). Growth in Asia and increasing penetration in the applied markets also positively impacted EBITDA. In the second quarter of fiscal 2006, more than one-third of revenues were generated from products introduced in the last 24 months.

    MDS Diagnostic Services
                                                               % Change
                                                          -------------------
    ($ millions)                                  Q2 2006   Q2 2005  Reported
    -------------------------------------------------------------------------
    Revenue                                          $90       $85        6%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Adjusted EBITDA:
      $                                              $29       $21       38%
      %                                              32%       25%        na
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

MDS Diagnostic Services revenue increased 6% year-over-year to $90 million. Funding negotiations with the Ontario Ministry of Health concluded in the second quarter, resulting in a retroactive payment of $4 million for services provided in the period between April 1, 2005, and January 31, 2006. EBITDA margins grew 750 basis points (440 basis points excluding the retroactive payment) compared to the second quarter of 2005.

Corporate

Last September, MDS announced its new strategy to focus on its high- growth, global life sciences businesses. The full transition to a global life sciences company is expected to be completed by the end of calendar 2006 with the conclusion of the alternate ownership structure for the Company's remaining diagnostics business.

MDS continues to focus on driving operational performance improvements across each of its core businesses. As we move through the second half of fiscal 2006, we reconfirm the guidance provided last November that the life sciences businesses are expected to deliver 6%-9% organic revenue growth; 100 to 200 basis point improvement in selling, general and administrative expenses; and 150 to 250 basis point improvement in adjusted organic EBITDA margins. Capital expenditures are expected to be in the $50 to $65 million range for fiscal 2006.

The Board of Directors declared a quarterly cash dividend of $0.0325 per share, to shareholders of record as of June 20, 2006. The dividend is payable on July 4, 2006.

The use of non-GAAP measures section in the MD&A outlines the use of the terms 'organic' and 'adjusted' in reflecting operating performance of the Company. We use certain non-GAAP measures so that readers have a better understanding of the significant events and transactions that have had an impact on our results. We provide a reconciliation of these non-GAAP measures to our GAAP financial results in the accompanying MD&A.

Conference Call

MDS will be holding a conference call today at 10:30 am (EDT) to discuss the second quarter results. This call will be webcast live at www.mdsinc.com and will also be available in archived format at www.mdsinc.com/news_events/webcasts_presentations.asp after the call.

About MDS

MDS Inc. (TSX:MDS; NYSE:MDZ) has more than 8,800 highly skilled people in 28 countries. It provides a diverse range of superior products and services to increase customers' speed, precision and productivity in the drug development and disease diagnosis processes. MDS is a global, values-driven life sciences company, recognized for its reliability and collaborative relationships that help create better outcomes in the treatment of disease. Find out more at www.mdsinc.com or by calling 1-800-MDS-7222, 24 hours a day.

MDS Forward Looking Statement

This document contains forward-looking statements. Some forward-looking statements may be identified by words like "expects", "anticipates", "plans", "intends", "indicates" or similar expressions. The statements are not a guarantee of future performance and are inherently subject to risks and uncertainties. The Company's actual results could differ materially from those currently anticipated due to a number of factors, including, but not limited to, successful integration of structural changes, including restructuring plans, acquisitions, technical or manufacturing or distribution issues, the competitive environment for the Company's products, the degree of market penetration of the Company's products, and other factors set forth in reports and other documents filed by the Company with Canadian and US securities regulatory authorities from time to time.


    MANAGEMENT'S DISCUSSION AND ANALYSIS

    June 7, 2006

Following is management's discussion and analysis (MD&A) of the results of operations for MDS Inc. (MDS or the Company) for the quarter ended April 30, 2006 and its financial position as at April 30, 2006. This MD&A should be read in conjunction with the consolidated financial statements and notes that follow. For additional information and details, readers are referred to the annual financial statements and MD&A for 2005 and the Company's Annual Information Form (AIF), each of which is published separately and is available at www.mdsinc.com and at www.sedar.com.

Caution regarding forward-looking statements

This MD&A is intended to provide readers with the information that management believes is required to gain an understanding of MDS's current results and to assess the Company's future prospects. Accordingly, certain sections of this report contain forward-looking statements that are based on current plans and expectations. These forward-looking statements are affected by risks and uncertainties that are discussed in this document, as well as in the AIF, that could have a material impact on future prospects. Readers are cautioned that actual events and results will vary.

From time-to-time, we make written or oral forward-looking statements within the meaning of certain securities laws, including the "safe harbour" provisions of the Securities Act (Ontario) and the United States Private Securities Litigation Reform Act of 1995. We may make such statements in this document, in other filings with Canadian regulators or the United States Securities and Exchange Commission, in reports to shareholders or in other communications. These forward-looking statements include, among others, statements with respect to our objectives for 2006, our medium-term goals, and strategies to achieve those objectives and goals, as well as statements with respect to our beliefs, plans, objectives, expectations, anticipations, estimates and intentions. The words "may", "could", "should", "would", "suspect", "outlook", "believe", "plan", "anticipate", "estimate", "expect", "intend", "forecast", "objective", and words and expressions of similar import are intended to identify forward-looking statements.

By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific, which give rise to the possibility that predictions, forecasts, projections and other forward-looking statements will not be achieved. We caution readers not to place undue reliance on these statements as a number of important factors could cause our actual results to differ materially from the beliefs, plans, objectives, expectations, anticipations, estimates and intentions expressed in such forward-looking statements. These factors include, but are not limited to, management of liquidity and funding and operational risks; the strength of the Canadian and United States economies and the economies of other countries in which we conduct business; the impact of the movement of the Canadian dollar relative to other currencies, particularly the US dollar and the Euro; the effects of changes in monetary policy, including changes in interest rate policies of the Bank of Canada and the Board of Governors of the Federal Reserve System in the United States; the effects of competition in the markets in which we operate; the impact of changes in the laws and regulations and enforcement thereof; judicial judgments and legal proceedings; our ability to obtain accurate and complete information from, or on behalf of, our customers and counter-parties; our ability to successfully realign our organization, resources and processes; our ability to complete strategic acquisitions and joint ventures and to integrate our acquisitions and joint ventures successfully; changes in accounting policies and methods we use to report our financial condition, including uncertainties associated with critical accounting assumptions and estimates; operational and infrastructure risks; other factors that may affect future results including changes in trade policies, timely development and introduction of new products and services, changes in our estimates relating to reserves and allowances, changes in tax laws, technological changes, natural disasters such as hurricanes, the possible impact on our businesses from public health emergencies, international conflicts and other developments including those relating to terrorism; and our success in anticipating and managing the foregoing risks.

We caution that the foregoing list of important factors that may affect future results is not exhaustive. When relying on our forward-looking statements to make decisions with respect to the Company, investors and others should carefully consider the foregoing factors and other uncertainties and potential events. We do not undertake to update any forward-looking statement, whether written or oral, that may be made from time to time by us or on our behalf.

Use of non-GAAP measures

In this MD&A, we describe certain income and expense items that are unusual or non-recurring. These terms are not defined by generally accepted accounting principles (GAAP). Our usage of these terms may vary from the usage adopted by other companies. We identify the impact of these amounts on operating income and on earnings per share (EPS). We provide this detail so that readers have a better understanding of the significant events and transactions that have had an impact on our results.

In addition, terms such as adjusted operating income; adjusted earnings before interest, taxes, depreciation and amortization (EBITDA); adjusted EBITDA margin; adjusted EPS; and backlog are not defined by GAAP, and our use of such terms or measurement of such items may vary from that of other companies. Where relevant, and particularly for earnings-based measures, we provide tables in this document that reconcile non-GAAP measures used to amounts reported on the face of the consolidated financial statements.

We also discuss the results of our operations, isolating variances that relate to changes in exchange rates and acquisitions. We use the term "organic" to describe the results presented in this way. To isolate the impact of currency movements, we eliminate the impact of foreign currency hedging activities in both the current and prior periods and recalculate the base figures for the prior period using the exchange rates that were in effect for the current period.

For our pharmaceutical services business, we provide information about contract backlog. Backlog measures are not defined by GAAP and our measurement of backlog may vary from that used by others. While we believe that long-term backlog trends serve as a useful metric for assessing the growth prospects for our business, backlog is not a guarantee of future revenues and provides no information about the timing on which future revenue may be recorded. We report our backlog in US dollars to reflect the underlying currency of the majority of such contracts and, therefore, reduce the volatility that would result from converting the measure to Canadian dollars.

Tabular amounts are in millions of Canadian dollars, except per share amounts and where otherwise noted.

Introduction

MDS is a global life sciences company that provides market-leading products and services that our customers need for the development of drugs and the diagnosis and treatment of disease. We are a leading global provider of pharmaceutical contract research, medical isotopes for molecular imaging, radiotherapeutics, and analytical instruments.

Discontinued operations

All financial references in this document exclude those businesses that we consider to be discontinued. Our discontinued businesses include our generic radiopharmaceuticals operations, our US laboratory operations, certain non-strategic pharmaceutical research services operations, and our interests in Source Medical Corporation (Source) and Calgary Laboratory Services Partnership (CLS). All financial references for the prior year have been restated to reflect this treatment. From the amounts reported in our second quarter 2005 interim report, revenues for 2005 have been reduced by $78 million and income from continuing operations has been unaffected.

Strategic initiatives

On September 1, 2005, we announced our strategic plan to pursue growth in the global life sciences market and divest of assets that do not contribute to the Company's areas of focus. During the second quarter, we completed the sale of Calgary Laboratory Services for $21 million. Subsequent to the end of the quarter, we finalized the sale of our pharmaceutics operations in Tampa for $5 million.

We continue to actively explore alternative ownership structures for our diagnostics business to maximize value for shareholders and at the present time we are focused on negotiations with potential purchasers. As well, we continue to review alternate strategies, including the possibility of distributing our interest in this business to shareholders in a tax-efficient manner. We expect that we will complete a transaction affecting this business before the end of this calendar year.

On February 22, 2006, we announced the successful completion of our mediation process with Atomic Energy of Canada Limited (AECL) regarding our MAPLE isotope production facility project. This has resolved a significant uncertainty for us and enables us to concentrate on further developing the medical imaging business.

    Consolidated operating highlights


           Second Quarter                                     Year-to-Date
    ----------------------------                          -------------------
                    % Change                                        % Change
                ----------------                                    ---------
    2006   2005  Reported Organic                        2006   2005 Reported
    -------------------------------------------------------------------------
    $369   $362        2%      9%   Net revenues         $734   $731       -
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

      29     38      (24%)          Operating income       72     85    (15%)
                                    Adjustments:
                                    ------------
      10      -                     MAPLE settlement       10      -
       7      -                     Valuation provisions    8      -
                                    Mark-to-market on
       2      -                      interest rate swaps    2      -
       1     (1)                    Restructuring charges   3      -
    -------------------------------------------------------------------------
                                    Adjusted operating
      49     37     32%              income                95     85     12%
                                    Depreciation and
      20     17                      amortization          38     33
    -------------------------------------------------------------------------
    $ 69   $ 54     28%     69%     Adjusted EBITDA      $133   $118     13%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Adjusted EBITDA
     19%    15%                      margin               18%    16%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

Consolidated revenue for the second quarter of 2006 was $369 million, up 2% from the $362 million reported in the same period in 2005. On an organic basis, revenues grew by 9%, driven particularly by 23% organic growth in our isotopes segment. Revenues from our instruments business grew 8% organically and our pharmaceutical services business realized 3% growth in revenue on an organic basis, driven by the continued growth in all businesses except bioanalytical. Diagnostics revenues grew 2% in the quarter, after adjusting for the retroactive impact of the new Ontario fee arrangement announced in April.

Adjusted EBITDA of $69 million was up 28% compared to last year and increased 69% on an organic basis. Results in our isotopes business remained strong this quarter, and we have seen a substantial improvement in our instruments business. We are also delivering continued EBITDA margin improvement in our diagnostics business, which is reporting an adjusted EBITDA margin of 32% (29% after taking into account the retroactive fees in Ontario), up 440 basis points from this time last year, excluding the impact of the retroactive fees.

The impact of the ongoing US Food and Drug Administration (FDA) review of our Montreal bioanalytical operations remained significant this quarter. The direct costs we have incurred on the review, combined with depressed revenues in this business, resulted in consolidated adjusted EBITDA being down by $7 million year-over-year.

Adjusted operating income for the second quarter of $49 million was 32% higher than the $37 million achieved in the second quarter of 2005. Adjustments reported for the quarter include a $10 million charge related to the exchange of assets associated with the MAPLE settlement, a $2 million mark-to-market loss on interest rate swaps, $1 million of restructuring charges, and an equity loss of $7 million related to provisions associated with the restructuring of MDS Capital Corp. and other investments. Including these adjusting items, operating income for the second quarter was $29 million, down from $38 million for the prior year.

Selling, general, and administration (SG&A) expenses for the quarter were $71 million, down 11% compared to the second quarter of last year and down $13 million compared to the fourth quarter of 2005 when we announced a series of initiatives to realign our cost structure to be more globally competitive. On a year-to-date basis, our SG&A spending as a percentage of revenues is 170 basis points lower than the average rate for fiscal 2005.

During the quarter, we spent $14 million on research and development (R&D) activities and expensed $1 million this year, compared to $25 million and $9 million respectively in the same quarter last year. Settlement of an audit of investment tax credits from a prior year resulted in a $3 million reduction in the amount of net R&D expense reported for the period.

Consolidated depreciation and amortization expense increased $3 million compared to last year. The increase includes amounts related to our new common business system, on which we began to record depreciation in the third quarter last year. Capital expenditures for the quarter were $15 million, excluding adjustments associated with the settlement of the MAPLE claims.

Reported earnings per share from continuing operations were $0.13 for the quarter, compared to $0.19 in 2005. Adjusted earnings per share from continuing operations for the quarter increased 22% and were $0.22 compared to $0.18 earned in the same period last year. Adjusted earnings per share for the two periods were as follows:

                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Basic and diluted EPS from
     continuing operations -
     as reported                       $  0.13   $  0.19   $  0.32   $  0.40
    Adjustments:
    ------------
      MAPLE settlement                    0.04         -      0.04         -
      Mark-to-market on interest
       rate swaps                         0.01         -      0.01         -
      Restructuring charges                  -     (0.01)     0.01         -
      Valuation provisions                0.04         -      0.05         -
      Quebec tax rate change                 -         -      0.02         -
    -------------------------------------------------------------------------
    Adjusted EPS                       $  0.22   $  0.18   $  0.45   $  0.40
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    MDS Pharma Services

    Financial Highlights

           Second Quarter                                     Year-to-Date
    ----------------------------                          -------------------
                    % Change                                        % Change
                ----------------                                    ---------
    2006   2005  Reported Organic                        2006   2005 Reported
    -------------------------------------------------------------------------
                                    Net revenues:
                                    -------------
    $ 78   $ 84       (7%)     1%   Early-stage          $156   $172     (9%)
      52     53       (2%)     6%   Late-stage            103    103       -
    -------------------------------------------------------------------------
    $130   $137       (5%)     3%                        $259   $275     (6%)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Operating income
      (6)    (6)        -            (loss)               (10)    (5)  (100%)
                                    Adjustment:
                                    -----------
       1     (1)                    Restructuring charges   -     (1)
    -------------------------------------------------------------------------
                                    Adjusted operating
      (5)    (7)                     income               (10)    (6)
                                    Depreciation and
       8      7                      amortization          16     14
    -------------------------------------------------------------------------
    $  3   $  -     n/m     n/m     Adjusted EBITDA      $  6   $  8    (25%)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Adjusted EBITDA
       2%     -                      margin                2%    3%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

Our pharmaceutical services business grew 3% on an organic basis, and 5% including acquisitions. We continue to experience healthy organic growth in all businesses except our bioanalytical business, on which the impact of the ongoing FDA review remains significant. As was the case in the first quarter, bioanalytical services is the only revenue line that was not up organically year-over-year. Excluding the bioanalytical business, organic revenue growth was 7% in the quarter.

Our early-stage businesses have benefited from strong organic growth in pharmacology and early clinical research. Drug safety assessment growth has moderated somewhat from the very strong growth experienced in the last several quarters. We opened the expansion of our Lyon facility in May and expect this will faciliate further growth in this business over the coming months.

Late-stage revenues grew 6% organically, balanced between our global clinical development and global central laboratory businesses. These late- stage businesses have also continued to be successful in winning new business and account for the growth in our backlog this quarter. Our average monthly pharmaceutical research backlog increased to US$400 million for the second quarter of 2006, an increase of 31% when compared to the average for the second quarter of fiscal 2005.

    Average monthly backlog                (millions of US dollars)
    ---------------------------------------------------------------
        Fiscal 2004 - Quarter 1                            $   240
                      Quarter 2                                265
                      Quarter 3                                285
                      Quarter 4                                300
        Fiscal 2005 - Quarter 1                                315
                      Quarter 2                                305
                      Quarter 3                                315
                      Quarter 4                                340
        Fiscal 2006 - Quarter 1                                370
                      Quarter 2                                400
    ---------------------------------------------------------------
    ---------------------------------------------------------------

Our review of our Montreal bioanalytical operations continued during the quarter. During March, the FDA conducted an audit of the facility, directing particular attention to the studies and processes covered by the review and the conduct of the review itself. At the conclusion of the FDA visit, we received observations related to this audit. The observations identified a number of issues pertaining to the effectiveness and management of the review.

We have continued to work diligently to address the issues raised by the audit and to meet all FDA expectations. We are committed to resolving all outstanding issues in a timely manner. In order to enhance this effort, we have dedicated an experienced project manager from outside the MDS Pharma Services division to take over management of the review project. To enable us to accelerate the activities related to the review in Montreal, we have temporarily suspended all commercial bioanalytical liquid chromatography/mass spectrometry operations in this facility and work has been moved to our facility in Lincoln. To date, the impact of the review on our other pharmaceutical services operations has been limited. Nevertheless, the status of studies affected by the FDA review has begun to generate a reaction among our clients. Recently, a limited number of clients advised us that they received letters from the FDA indicating that submissions containing data from our Montreal and Blainville facilities would not be processed for approval until FDA concerns are resolved. At this time, we are unable to judge what impact, if any, this will have on our business development activities. We are also not able to estimate the cost we may incur, if any, related to this development.

The decline in bioanalytical revenues has moderated on an organic basis, primarily because the impact of the review began to be felt in the Montreal facility in the second quarter last year. Despite this, the financial and operational impact of the review was significant in the quarter. The EBITDA contribution of this business for the quarter was $4 million less than for the same period last year, and included $5 million of direct spending associated with the FDA review. We incurred a further $2 million of special consulting costs to oversee the response to the review and to advise our Board. This $2 million cost is reflected in the Corporate segment.

Reported EBITDA was impacted by currency changes and the decreased profits in our bioanalytical business. Excluding the impact of currency and the drop in bioanalytical profits, adjusted EBITDA for the segment rose $9 million, including $4 million of tax credits realized as a result of the completion of on-going tax audits. Adjusted EBITDA was up $4 million organically, and all business units except Montreal bioanalytical contributed to growth in adjusted EBITDA this quarter, with particularly good contribution from our pharmacology and late-stage operations.

Capital expenditures in the pharmaceutical services segment were $9 million compared to $4 million last year. Capital expenditures were related principally to our ongoing expansion of our drug safety assessment facility in Lyon, as well as an expansion of our operations in Bothell.

We are expanding our early clinical capacity to take advantage of continued strong market demand in this service line. We have increased our facility expansion plans and added a further 300 beds to our plans for our Phoenix clinic. In May, we reopened the New Orleans site, restoring 55 beds to our network. We remain committed to increasing our early clinical research capacity. When our expansion in Phoenix is completed next year, we will have over 1,100 early clinical beds in North America. We believe this will position us well as others in the industry are reducing capacity in this market.

The pharmaceutical industry continues to improve its processes to address drug safety issues. Most recently, a study being conducted by another industry participant in Europe involving a monoclonal antibody resulted in severe adverse reactions in study participants. European regulators have reacted quickly, increasing the scrutiny of protocols and lengthening the approval time before new studies can proceed. This action may have a short-term negative impact on revenues. We have thoroughly reviewed our trial procedures in light of this development.

    MDS Nordion

    Financial Highlights

           Second Quarter                                     Year-to-Date
    ----------------------------                          -------------------
                    % Change                                        % Change
                ----------------                                    ---------
    2006   2005  Reported Organic                        2006   2005 Reported
    -------------------------------------------------------------------------
    $ 83   $ 75       11%     23%   Net revenues         $165   $150     10%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    $ 11   $ 15      (27%)          Operating income     $ 35   $ 36     (3%)
                                    Adjustment:
                                    -----------
      10      -                     MAPLE settlement       10      -
    -------------------------------------------------------------------------
                                    Adjusted operating
      21     15       40%            income                45     36     25%
                                    Depreciation and
       4      3                      amortization           8      7
    -------------------------------------------------------------------------
    $ 25   $ 18       39%     46%   Adjusted EBITDA      $ 53   $ 43     23%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Adjusted EBITDA
      30%    24%                     margin                32%    29%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

Our isotopes business grew 23% year-over-year on an organic basis in the second quarter, with continued strong performance from medical isotopes. Other revenues were also up in the second quarter this year, due to higher sales of production and self-contained irradiator compared to the second quarter of 2005.

During the quarter, we continued to focus on meeting the demands of the cardiac imaging market and worked, to the extent possible, to see that no patient needing a cardiac scan was forced to cancel a procedure due to a lack of the isotopes we produce. We stepped up production early this year, when a major competitor announced a voluntary recall of technetium generators, used primarily for cardiac imaging, while they addressed sterility issues at their primary manufacturing facility. We estimate that approximately $8 million of high-margin revenues were realized in the quarter from this added production. Industry production capacity returned to normal early in April, and accordingly, we do not expect to be able to fully retain the increase in market share that we have enjoyed over the first half of this year.

The strength in medical isotopes this quarter was partially offset by the impact from the continuing drop in the value of US dollar. In addition, although the value of the Euro appears to have stabilized, it remains well below its value at this time last year.

Organic growth in adjusted EBITDA was 46%, led by the strength in medical isotopes. The impact of currency fluctuations continues to be a concern for this business, as a significant portion of revenues is priced in US dollars and Euros.

Early in the second quarter, we were pleased to report the completion of mediation with AECL related to the MAPLE reactor project. The agreement reached with AECL provides the basis for a productive on-going relationship between us and enables AECL to move forward on the construction project. We have been relieved of any obligation for capital costs related to the completion of construction and commissioning of the reactors and the dedicated production facility, and at the same time, we have achieved a level of certainty regarding the cost of acquiring isotopes for sale in the future that was not possible under the earlier agreement.

Under this agreement, MDS exchanged its interest in the project, along with certain associated inventories, for $25 million in cash, a non-interest bearing note due over four years beginning in 2008, and a 40-year supply agreement containing terms that are similar to those contained in the current supply agreement with AECL. Since AECL has now assumed full ownership of the facility, they will be responsible for capital costs associated with completing construction and commissioning the reactors and for future operating costs. MDS has retained a commitment to assist AECL to defray the costs of any material and unusual regulatory changes, should such a change occur during the life of the current or future supply agreement. This commitment extends to cover any changes required by international agreements or treaties related to the use of highly enriched uranium for the reactors.

Under the terms of the agreement, AECL assumed all capital costs associated with construction from November 1, 2005 onwards. As at October 31, 2005, the carrying value for our interest in the project totaled $393 million. This carrying value included construction costs, as well as interest costs that were capitalized during the construction phase. During the first quarter of 2006, capital costs amounting to $14 million were incurred on the project and we recorded these as a capital expenditure as required under Canadian GAAP. As part of the settlement, AECL assumed these costs and we reached a settlement for certain earlier costs that we had capitalized prior to November 1, 2005. Also during the quarter, we updated certain tax credits claims related to some of the costs incurred on the project.

Taking into account these adjustments, the carrying value of our interest in the project was $370 million at the time of the settlement. Under the settlement, we exchanged our interest in the reactor project, along with related parts and supply inventories having a carrying value of $53 million, for $25 million in cash, the promissory note having a discounted present value of $44 million, and the 40-year supply agreement. With the assistance of an independent valuator we have determined that the fair value of the supply agreement is $344 million, and accordingly, we recorded a loss of $10 million resulting from this settlement in the second quarter.

There were no capital expenditures in the isotopes segment in the second quarter, compared to $8 million last year, which included spending on the MAPLE project. The cash flow impact associated with the MAPLE settlement and project have been grouped on a separate line in the cash flow statement this year due to the unusual nature of these activities.

The MAPLE agreement removes significant uncertainties for us related to the capital cost of the project and the cost to obtain reactor isotopes in the future. The commissioning risk remains though, as many of the technical issues have yet to be resolved. Nevertheless, there have been recent positive developments, as AECL has received permission to begin the process of powering up the first reactor to 2 MW for testing purposes. In addition, the Canadian Nuclear Safety Commission is considering extending the operating licence for the existing NRU reactor to 2011, which would allow this reactor to continue to supply us with isotopes while the commissioning of MAPLE proceeds.

We are pleased with the longer-term outlook for the isotopes business. Demand for our primary medical isotopes remain strong and our ability to maintain supply levels for the market in the face of a significant production shortfall from a competitor demonstrates our commitment to security of supply for our customers. We are also encouraged by the granting of the CE Mark for our Equinox(TM) cancer treatment equipment and for our Avanza patient positioning treatment table.

In February, we signed a six-year renewable contract with Molecular Insight Pharmaceuticals, Inc. (MIP) to manufacture and supply Zemiva(TM), a molecular imaging pharmaceutical being developed for cardiac ischemia, or insufficient blood flow to the heart. Zemiva(TM), currently in clinical trials, is targeted for the emergency department setting. This contract will enable us to build upon our strong development partnership with MIP through the use of our significant development and manufacturing capabilities to meet the commercial market needs of Zemiva(TM). As a result of the contract, we will expand our Good Manufacturing Practice (GMP) manufacturing capabilities at our Vancouver facility to support the clinical program and commercial supply of Zemiva(TM).

More recently, we signed a three-year contract with Bradmer Pharmaceuticals Inc. (Bradmer) for the development and clinical trial supply of Neuradiab, a monoclonal antibody conjugated to an isotope and used to treat glioblastoma multiforme (GBM), the most common and deadly form of brain cancer. In six clinical trials reported by Bradmer involving over 160 glioblastoma multiforme cancer patients, Neuradiab has demonstrated a significant survival benefit over historical controls. This new agreement with Bradmer further demonstrates our capabilities in the growing field of radiotherapeutics.

Business arrangements such as those with Bradmer and MIP are consistent with our strategic direction in this business as we focus on broadening our product offerings in medical imaging and radiotherapeutics. Expertise in radioisotope production and utilization is a key competency for MDS, and we plan to leverage this knowledge in new product areas. This expansion into new areas within the overall radiopharmaceutical value chain will serve to offset softness in the cyclotron isotopes market that has developed as radiopharmaceutical manufactures have brought new capacity on stream for in-house supply, reducing demand for outsourced product.

    MDS Sciex

    Financial Highlights

           Second Quarter                                     Year-to-Date
    ----------------------------                          -------------------
                    % Change                                        % Change
                ----------------                                    ---------
    2006   2005  Reported Organic                        2006   2005 Reported
    -------------------------------------------------------------------------
    $ 66   $ 65        2%      8%   Net revenues         $137   $139     (1%)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    $ 16   $ 12       33%           Operating income     $ 31   $ 30      3%
                                    Depreciation and
       6      4                      amortization          10      7
    -------------------------------------------------------------------------
    $ 22   $ 16       38%     54%   Adjusted EBITDA      $ 41   $ 37     11%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Adjusted EBITDA
      33%    25%                     margin                30%    27%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

In the second quarter, our instruments business grew 8% on an organic basis, driven by the performance of our high-end triple quad LCMS, ion trap, and TOF/TOF products. We were able to target our manufacturing capacity on the high-demand products in the quarter, and as a result, we kept up with the continued strong market demand in this area. While demand in all markets is up, there has been a noticeable increase in interest from, and sales to, China and India, offsetting slower market growth in North America and Europe.

We noted in past reports that applied markets, which include forensics, food testing and similar applications, were fueling demand for mid-range products, and this trend became more pronounced this quarter. We continue to view these markets as attractive channels for our technologies.

Reported EBITDA grew 33% compared to fiscal 2005, and on an organic basis, adjusted EBITDA growth was 54%. During the quarter, we finalized R&D tax credit claims from prior years, resulting in the recording of $3 million of investment tax credits not previously recognized. These credits were recorded as a reduction in net R&D expenses for the quarter. In addition, we have recorded a $1 million foreign exchange gain on US-dollar denominated debt incurred in connection with our acquisition of the MALDI-TOF business in 2004. Excluding these items, adjusted EBITDA growth was 13% and the adjusted EBITDA margin was 27%, an improvement of 200 basis points from last year.

Capital expenditures in the instruments segment (excluding capitalized development costs) were $2 million, this year and last.

For the year-to-date, 40% of our revenues were generated from the sale of products that we introduced in the last two years. This is a strong indication of the importance of innovation and product differentiation in this market, which we were able to achieve because R&D remains a key strategic focus in our instruments business.

We are encouraged by the continued strength from our high-end instruments and particularly by the growing interest in this level of technology from China and India, both of which have a rapidly growing presence in pharmaceutical development. We are also seeing signs of improved growth in the proteomics market on which our new products are well positioned to capitalize. We have gradually ramped up activity in our new Singapore facility as we prepare it to take on a greater role in our manufacturing value stream. We recently completed ISO 9000 certification of the Singapore plant.

Cell-based assays, in particular label-free formats catered to by our CellKey(TM) product line, are gaining more attention in the market, although, as with any new technology, adoption has been gradual. We are continuing to devote sales effort to promote CellKey(TM) and we see interest in this new product growing.

    MDS Diagnostics

    Financial Highlights

           Second Quarter                                     Year-to-Date
    ----------------------------                          -------------------
                    % Change                                        % Change
                ----------------                                    ---------
    2006   2005  Reported Organic                        2006   2005 Reported
    -------------------------------------------------------------------------
    $ 90   $ 85        6%      6%   Net revenues         $173   $167      4%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    $ 27   $ 19       42%     42%   Operating income     $ 44   $ 33     33%
                                    Adjustment:
                                    -----------
       -      -                     Restructuring charges   1      -
    -------------------------------------------------------------------------
                                    Adjusted operating
      27     19                      income                45     33
                                    Depreciation and
       2      2                      amortization           4      4
    -------------------------------------------------------------------------
    $ 29   $ 21       38%     38%   Adjusted EBITDA      $ 49   $ 37     32%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

                                    Adjusted EBITDA
      32%    25%                     margin               28%    22%
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

A new Ontario fee agreement was reached in April between the Ontario Association of Medical Laboratories (OAML) and the Ontario Ministry of Health (MOH), resolving uncertainty for our diagnostics business that has existed since March 2005, when the previous agreement expired. Under the terms of the new agreement, base fees will be increased 2% in each year of the three-year term, beginning April 1, 2005.

The agreement also provides for adjustment funding should certain industry volume thresholds be reached as a result of accommodating the needs of long-term care patients and new physicians, among other criteria. Under this arrangement, funding adjustments could be made to a maximum of 0.8%, 2.9% and 4.9% over the March 31, 2005 provincial funding cap, for the years ending March 31, 2006, March 31, 2007, and March 31, 2008, respectively. If earned, these funding adjustments would be paid annually to OAML members according to their respective proportional shares of the provincial funding cap.

Completion of the new three-year fee agreement in Ontario is a substantial step forward for our diagnostics business. The agreement provides certainty about minimum fees for the industry until March 2008, and provides for increased fees to cover a portion of the incremental volumes that clinical laboratories are experiencing as patient volumes grow.

We have been operating under the terms of the previous fee agreement since April 1, 2005 and we have been performing the lab testing and incurring the related costs associated with that work since that time. As we do not recognize any fee increase until such time as a fee agreement is signed, our results for the second quarter include $3 million of base-level fee adjustments related to the period prior to February 1, 2006. As the industry volumes for the year ended March 31, 2006 exceeded the thresholds at which the adjustment funding is payable, we also recorded $1 million of adjustment fees in the quarter related to previous periods.

Excluding the retroactive fees included in income in the quarter, adjusted EBITDA for diagnostics increased to $25 million compared to $21 million reported last year, and our adjusted EBITDA margin improved to 29% from 25% last year. We have maintained the margin expansion begun last fall that is a direct result of the cost realignment initiatives launched in September last year and the LeanSigma projects that we currently have underway.

    Capital expenditures in the diagnostics segment were $1 million in the
quarter this year.

    Corporate

    Financial Highlights

     Second Quarter                                            Year-to-Date
    ----------------                                         ----------------
     2006      2005                                           2006      2005
    -------------------------------------------------------------------------
    $ (19)    $  (1)   Operating costs before depreciation   $ (28)    $  (8)
                       Adjustments:
                       ------------
        7         -    Valuation provisions                      7         -
        2         -    Mark-to-market adjustment                 3         -
        -         -    Restructuring charges                     2         1
    -------------------------------------------------------------------------
    $ (10)    $  (1)   Adjusted operating costs              $ (16)    $  (7)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

In September 2005, we announced our intention to monetize our investment in MDS Capital Corp. and other investments. During the quarter, we recorded $7 million as our share of provisions and other losses incurred as these investments are positioned for sale. We continue to review disposal options for these holdings.

From time-to-time we enter into derivative contracts to hedge our exposure to foreign currency exchange rates and interest rates. During the fourth quarter of 2005, certain interest rate swaps became ineffective for hedge accounting purposes and, as a consequence, are now subject to mark-to- market accounting. In the second quarter, we recorded a non-cash loss of $2 million on these swaps.

Corporate expenditures in the second quarter of 2005 were abnormally low due to a high level of gains on foreign exchange in the quarter and equity earnings from MDS Capital Corp., neither of which was repeated this year. As noted previously, corporate spending in the current quarter included $2 million of special consulting costs associated with the FDA review.

Interest expense was $5 million for the quarter this year and $4 million for the prior year. The increase from 2005 reflects the impact of gradually increasing short-term interest rates and the imputed interest cost on a government loan associated with the MAPLE project, on which we are no longer able to capitalize the interest cost. Dividend and interest income was $2 million compared to $3 million last year.

Income taxes

As the retroactive lab fee increase in Ontario is largely sheltered from tax, the effective tax rate for the second quarter of 2006 was 19% compared to 22% for the same quarter of last year.

    Discontinued operations

    The results of our discontinued businesses were as follows:

                                          Second Quarter        Year-to-Date
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Net revenues                       $    18   $    90   $    57   $   176
    Cost of revenues                       (16)      (75)      (49)     (147)
    Selling, general and
     administration                         (4)      (11)       (8)      (20)
    Depreciation and amortization            -         -        (1)       (2)
    -------------------------------------------------------------------------
    Operating income (loss)                 (2)        4        (1)        7
    Gain on sale of Source                   -         -        28         -
    Income taxes                             -         -         -        (2)
    Minority interest                        -        (1)       (1)       (2)
    -------------------------------------------------------------------------
    Income (loss) from discontinued
     operations                        $    (2)   $    3   $    26   $     3
    -------------------------------------------------------------------------
    Basic earnings (loss) per share    $ (0.01)   $ 0.02   $  0.18   $  0.02
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Liquidity and capital resources

                                        April 30    October 31
                                            2006          2005        Change
    -------------------------------------------------------------------------
    Cash and cash equivalents            $   359       $   265           35%
    Operating working capital(1)         $   130       $    84           55%
    Current ratio                            2.1           1.7
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    (1) Our measure of operating working capital equals accounts receivable
        plus unbilled revenue and inventory less accounts payable, accrued
        liabilities, and current deferred revenue.

Cash and cash equivalents has risen $94 million since year-end and $77 million since January 31, 2006. Aside from operating cash flows, the main components of the increase since January are the cash received on the MAPLE settlement and from the sale of CLS.

Accounts receivable and inventories are both down from year-end. The considerable reduction in inventories reflects the sale of $53 million of MAPLE inventories to AECL on closing of the agreement. Accounts receivable and unbilled revenue fluctuations reflect ordinary cycles in the businesses. Accounts payable are down substantially, reflecting payment of normal year-end accruals, restructuring costs, and the assumption by AECL of liabilities associated with the MAPLE project.

Excluding the cash provided by the MAPLE settlement, cash used in investing activities (excluding discontinued operations) was $16 million, reflecting capital asset additions.

Cash was provided by financing activities (excluding discontinued operations) during the quarter of $5 million, due to cash proceeds from shares issued under our various stock purchase plans. In the second quarter of last year we repurchased 276,100 common shares for $5 million under our Normal Course Issuer Bid (NCIB). We made no purchases under our NCIB during the current quarter.

Our liquidity needs can be satisfied from cash generated from operations and short-term borrowings against our available lines of credit. During 2005, we negotiated a $500 million, five-year committed, revolving credit facility, which replaced our previous $225 million credit facility. No funds were borrowed under the facility as of April 30, 2006. We believe that cash flow generated from operations, coupled with available borrowings from existing financing sources, will be sufficient to meet our anticipated capital expenditures, research and development expenditures and other cash requirements in 2006. At this time, we do not reasonably expect any presently known trend or uncertainty to affect our ability to access our current sources of cash. We remain in compliance with all covenants for our senior unsecured notes and our bank credit facility.

Contractual obligations

Subsequent to the end of the quarter, we renegotiated a substantial commitment related to outsourced information technology support. As a result, long-term obligations under these contracts of $211 million outstanding at the end of fiscal 2005 have been eliminated. We are currently in negotiation with alternative providers for these services and expect to enter into replacement agreements during the third quarter.

There have been no other material changes in contractual obligations since October 31, 2005, with the exception of those contained in the MAPLE settlement agreement, described elsewhere in this document.

    There has been no substantive change in any of our long-term debt or
other long-term obligations since October 31, 2005. We have not entered into
any new guarantees of the debt of other parties, nor do we have any off-
balance sheet arrangements.

Derivative instruments

We use derivative financial instruments to manage our foreign currency and interest rate exposure. These instruments consisted of forward foreign exchange and option contracts and interest rate swap agreements entered into in accordance with established risk management policies and procedures. All derivative instrument contracts are with banks listed on Schedules I to III to the Bank Act (Canada) and the Company utilizes financial information provided by certain of these banks to determine the fair market values of the financial instruments.

The unrecorded mark-to-market value of derivative instruments at April 30, 2006 was $9 million. As noted previously, we recorded a $2 million mark-to-market loss on interest rate swaps during the second quarter of 2006.

    Capitalization

                                           April       October
                                            2006          2005        Change
    -------------------------------------------------------------------------
    Long-term debt                      $    446      $    468           (5%)
    Less: cash and cash equivalents          359           265           35%
    -------------------------------------------------------------------------
    Net debt                                  87           203          (57%)
    Minority interest                         16            20          (20%)
    Shareholders' equity                   1,522         1,425            7%
    -------------------------------------------------------------------------
    Capital employed(1)                 $  1,625      $  1,648           (1%)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    (1) Capital employed is a measure of how much of our net assets are
        financed by debt and equity.

Long-term debt decreased $22 million over the first half of fiscal 2006, due principally to revaluation of our US-dollar denominated long-term debt. The US dollar has depreciated by $0.06 since October 31, 2005, resulting in a further unrealized gain on our senior unsecured notes of $20 million and bringing the total cumulative unrealized gain to $144 million. This unrealized gain is recorded in the currency translation adjustment account.

Quarterly highlights

Following is a summary of selected financial information derived from the Company's unaudited interim period consolidated financial statements for each of the eight most recently completed quarters. This financial data has been prepared in accordance with Canadian GAAP and prior periods have been restated to reflect the discontinuance of the operations discussed above.

    (millions of Canadian dollars, except earnings per share)
    -------------------------------------------------------------------------
                        Trailing
                      4 Quarters   Apr 2006   Jan 2006   Oct 2005   Jul 2005
    -------------------------------------------------------------------------
    Net revenues        $  1,492   $    369   $    365   $    390   $    368
    Operating income
     (loss)             $     63   $     29   $     43   $    (35)  $     26

    Income (loss)
     from continuing
     operations         $     30   $     18   $     27   $    (29)  $     14
    Net income (loss)   $     42   $     16   $     55   $    (48)  $     19
    Earnings (loss)
     per share from
     continuing
     operations
      Basic and
       diluted          $   0.21   $   0.13   $   0.19   $ (0.21)   $   0.10
    Earnings (loss)
     per share
      Basic and
       diluted          $   0.30   $   0.12   $   0.38   $ (0.34)   $   0.14
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    (millions of Canadian dollars, except earnings per share)
    -------------------------------------------------------------------------
                        Trailing
                      4 Quarters   Apr 2005   Jan 2005   Oct 2004   Jul 2004
    -------------------------------------------------------------------------
    Net revenues        $  1,481   $    362   $    369   $    375   $    375
    Operating income
     (loss)             $    163   $     38   $     47   $     11   $     67

    Income (loss)
     from continuing
     operations         $    113   $     27   $     30   $      5   $     51
    Net income (loss)   $    119   $     30   $     30   $      9   $     50
    Earnings (loss)
     per share from
     continuing
     operations
      Basic and
       diluted          $   0.79   $   0.19   $   0.21   $   0.03   $   0.36
    Earnings (loss)
     per share
      Basic and
       diluted          $   0.83   $   0.21   $   0.21   $   0.06   $   0.35
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

On a trailing four quarters basis, reported revenues have increased 1% and income from continuing operations is down 73%. Earnings per share from continuing operations are down by 73%. There were no unusual seasonal variations in these two 12-month periods. Operating income for the quarter ended October 2004 was reduced by $35 million due to valuation and other provisions related to long-term investments and deferred development costs. Operating income for the quarter ended October 31, 2005 is net of restructuring provisions amounting to $67 million and asset valuation provisions totaling $13 million.

Outlook

The second quarter of fiscal 2006 has been strong for all businesses except the bioanalytical business of MDS Pharma Services, where the on-going efforts associated with the FDA review and the impact on business development activities had a significant impact on earnings. We have redoubled our attention on this issue and will retain this focus until the FDA is satisfied with our analysis and conclusions.

Foreign currency remains a critical issue for our businesses as both the US dollar and the Euro continue to decline relative to the Canadian dollar. The diminished protection afforded by our hedges will continue to have an impact on our reported operating results this year. We will provide analysis of our results on an organic basis to help provide a clearer understanding of the trends affecting our businesses. We expect to switch to US dollar and US GAAP reporting following the completion of a diagnostics transaction.

Continued significant contract wins by our late-stage businesses and the steady growth of the early-stage businesses other than bioanalytical are encouraging. The profitability of more recent contracts is better than that of many of the older contracts still in backlog. As we complete work on these older contracts we expect to see a gradual improvement in the performance of the late-stage business.

Our isotopes business has been very successful in the first half of 2006. We demonstrated our ability to step-up production of certain critical isotopes to meet the unexpected supply disruption experienced in the market. We are hopeful that some of the increase in business we experienced in recent months will be retained, but it is too early to determine whether we will be able to maintain an improved market share. Our cobalt businesses continue to be steady performers, but short-term supply volatility is still an issue. Expected high levels of electricity demand in Ontario this summer have caused some of our suppliers of cobalt to modify their maintenance schedules. Although this will have little effect in the medium-term, we anticipate these schedule changes will affect the timing of cobalt deliveries during the last half of the year.

Continued strong sales of high-end instruments resulted in a substantially higher adjusted EBITDA margin in MDS Sciex this quarter compared to last year. Our organic growth is in line with market growth rates and we see no reason to believe this will change. At this time we see strong indications of interest from customers in China and India and improving trends in other major markets.

We remain on track to achieve our targeted improvement of a 150 to 200 basis point reduction in SG&A expenses as a percent of revenue. For the year- to-date we are 170 basis points below last year's rate, despite significant investments in Sarbanes-Oxley (SOx) compliance and the FDA review. SG&A spending for the quarter includes $2 million related directly to our ongoing efforts to ensure compliance with the SOx regulatory requirements this year. Our SOx activities will continue throughout the year at approximately this same quarterly rate. We have essentially completed our assessment phase and we are now working on remediating identified deficiencies. We are working closely with our auditors, and have established a clear plan for their audit procedures to enable them to complete their work in a timely and effective manner. Our focus is to complete the required SOx assessments for all of our continuing businesses by year-end and to put plans in place to address any identified deficiencies.

Overall, we have had a very strong first half despite challenges in our bioanalytical business. In the second half our focus will be on the completion of a transaction involving our diagnostics business, while we take steps to maintain momentum across all of our businesses.



    CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
    (UNAUDITED)

    -------------------------------------------------------------------------

    As at April 30 with comparatives at October 31        2006          2005
    (millions of Canadian dollars)                                 (Restated
                                                                      Note 5)
    -------------------------------------------------------------------------
    ASSETS
    Current
    Cash and cash equivalents                        $     359     $     265
    Accounts receivable                                    267           278
    Unbilled revenue                                       142           115
    Inventories                                            112           163
    Income taxes recoverable                                 7             3
    Current portion of future tax asset                     18            19
    Prepaid expenses and other                              28            21
    Assets held for sale (note 5)                            7           114
    -------------------------------------------------------------------------
                                                           940           978

    Property, plant and equipment (note 3)                 416           841
    Future tax asset                                       117           118
    Long-term investments and other (note 2)               213           159
    Goodwill                                               535           541
    Other intangibles (note 3)                             385            43
    -------------------------------------------------------------------------
    Total assets                                     $   2,606     $   2,680
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    LIABILITIES AND SHAREHOLDERS' EQUITY
    Current
    Accounts payable and accrued liabilities         $     270     $     353
    Deferred revenue                                       121           119
    Income taxes payable                                    34            28
    Current portion of unrealized benefit
     of future tax asset                                    17            16
    Current portion of long-term debt                       13            13
    Liabilities related to assets held for
     sale (note 5)                                           1            50
    -------------------------------------------------------------------------
                                                           456           579

    Long-term debt                                         433           455
    Deferred revenue                                        21            26
    Unrealized benefit of future tax asset                  54            64
    Other long-term obligations                             34            42
    Future tax liabilities                                  70            69
    Minority interest                                       16            20
    -------------------------------------------------------------------------
                                                     $   1,084     $   1,255
    -------------------------------------------------------------------------
    Shareholders' equity
    Share capital (note 4)                                 875           847
    Retained earnings                                      665           604
    Currency translation adjustment                        (18)          (26)
    -------------------------------------------------------------------------
                                                         1,522         1,425
    -------------------------------------------------------------------------
    Total liabilities and shareholders' equity       $   2,606    $    2,680
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    See accompanying notes



    CONSOLIDATED STATEMENTS OF INCOME
    (UNAUDITED)
    (see note 5 - Discontinued Operations)

    -------------------------------------------------------------------------

                                        Three months              Six months
                                         to April 30             to April 30
    -------------------------------------------------------------------------
    (millions of Canadian           2006        2005        2006        2005
     dollars, except per                   (Restated               (Restated
     share amounts)                           Note 5)                 Note 5)
    -------------------------------------------------------------------------
    Net revenues                $    369    $    362    $    734    $    731
    Cost of revenues                (229)       (222)       (457)       (448)
    Selling, general and
     administration                  (71)        (80)       (140)       (151)
    Research and development
     (note 6)                         (1)         (9)         (7)        (16)
    Depreciation and amortization    (20)        (17)        (38)        (33)
    Restructuring charges (note 7)    (1)          1          (3)          -
    Other expenses (note 9)          (12)          -         (13)          -
    Equity earnings (loss)            (6)          3          (4)          2
    -------------------------------------------------------------------------
    Operating income                  29          38          72          85
    -------------------------------------------------------------------------

    Interest expense                  (5)         (4)         (8)         (9)
    Dividend and interest income       2           3           4           4
    -------------------------------------------------------------------------
    Income from continuing
     operations before income
     taxes and minority interest      26          37          68          80
    Income taxes (note 14)            (5)         (8)        (18)        (19)
    Minority interest - net of tax    (3)         (2)         (5)         (4)
    -------------------------------------------------------------------------
    Income from continuing
     operations                       18          27          45          57
    Income (loss) from
     discontinued operations -
     net of tax (note 5)              (2)          3          26           3
    -------------------------------------------------------------------------
    Net income                  $     16    $     30    $     71    $     60
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Basic and diluted
     earnings (loss) per
     share (note 8)
    - from continuing
      operations                $   0.13    $   0.19    $   0.32    $   0.40
    - from discontinued
      operations                   (0.01)       0.02        0.18        0.02
    -------------------------------------------------------------------------
    Basic and diluted
     earnings per share         $   0.12    $   0.21    $   0.50    $   0.42
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    See accompanying notes



    CONSOLIDATED STATEMENTS OF RETAINED EARNINGS
    (UNAUDITED)

    -------------------------------------------------------------------------

                                        Three months              Six months
                                         to April 30             to April 30
    -------------------------------------------------------------------------
    (millions of Canadian
     dollars)                       2006        2005        2006        2005
    -------------------------------------------------------------------------
    Retained earnings,
     beginning of period        $    654    $    621    $    603    $    599
    Net income                        16          30          71          60
    Repurchase of shares               -          (3)          -          (8)
    Dividends - cash                  (4)         (4)         (7)         (7)
    Dividends - stock                 (1)         (2)         (2)         (2)
    -------------------------------------------------------------------------
    Retained earnings,
     end of period              $    665    $    642    $    665    $    642
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------


    CONSOLIDATED STATEMENTS OF CASH FLOWS
    (UNAUDITED)

    -------------------------------------------------------------------------

                                        Three months              Six months
                                         to April 30             to April 30
    -------------------------------------------------------------------------
    (millions of Canadian           2006        2005        2006        2005
     dollars)                              (Restated               (Restated
                                              Note 5)                 Note 5)
    -------------------------------------------------------------------------
    Operating activities
    Net income                  $     16    $     30    $     71    $     60
    Income (loss) from
     discontinued operations          (2)          3          26           3
    -------------------------------------------------------------------------
    Income from continuing
     operations                       18          27          45          57
    Items not affecting
     current cash flow (note 11)      30          23          48          42
    Changes in non-cash working
     capital balances relating
     to operations (note 11)           3          (1)        (57)        (22)
    -------------------------------------------------------------------------
    Cash provided by operating
     activities of continuing
     operations                       51          49          36          77
    Cash provided by (used in)
     operating activities of
     discontinued operations           -           4          (1)          3
    -------------------------------------------------------------------------
                                      51          53          35          80
    -------------------------------------------------------------------------
    Investing activities
    Increase in deferred
     development charges              (2)        (10)         (4)        (10)
    Acquisitions                       -          (2)          -          (2)
    Proceeds from Maple
     transaction                      27           -          27           -
    Purchase of capital assets       (15)        (20)        (28)        (36)
    Other                              1          (2)        (18)         (3)
    -------------------------------------------------------------------------
    Cash provided by (used in)
     investing activities of
     continuing operations            11         (34)        (23)        (51)
    -------------------------------------------------------------------------
    Cash used in investing
     activities of discontinued
     operations                        -          (1)          -          (1)
    -------------------------------------------------------------------------
    Cash from proceeds on sale
     of discontinued operations       11           -          86           -
    -------------------------------------------------------------------------
    Financing activities
    Repayment of long-term debt       (1)         (1)         (1)         (1)
    Decrease in deferred revenue
     and other long-term
     obligations                       1           -          (8)         (5)
    Payment of cash dividends         (3)         (3)         (7)         (7)
    Issuance of shares                10           1          21           5
    Repurchase of shares               -          (5)          -         (13)
    Distribution to minority
     interest                         (2)         (1)         (9)         (8)
    -------------------------------------------------------------------------
    Cash provided by (used in)
     financing activities of
     continuing operations             5          (9)         (4)        (29)
    -------------------------------------------------------------------------
    Effect of foreign exchange
     rate changes on cash and
     cash equivalents                 (1)          1           -           3
    -------------------------------------------------------------------------
    Increase in cash position
     during the period                77          10          94           2
    Cash position, beginning
     of period                       282         288         265         296
    -------------------------------------------------------------------------
    Cash position, end of
     period                     $    359    $    298    $    359    $    298
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Cash position comprises cash and cash equivalents
    See accompanying notes



    -------------------------------------------------------------------------
    NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
    (All tabular amounts in millions of Canadian dollars, except where noted)
    -------------------------------------------------------------------------

    1.  Accounting Policies

    These consolidated financial statements of MDS Inc. (MDS or the Company)
    have been prepared on a basis consistent with the Company's annual
    financial statements for the year ended October 31, 2005, except as
    disclosed below, and should be read in conjunction with the accounting
    policies and other disclosures in those annual financial statements.
    These financial statements do not include all of the disclosures required
    by generally accepted accounting principles applicable to annual
    financial statements.

    Prior year's amounts have been restated to reflect the results of
    discontinued operations, and a change in the way the Company reports
    segmented information.

    (a) Accounting Policy Changes

        (i)  Non-monetary Transactions

             In June 2005, the CICA issued Handbook Section 3831 - Non-
             monetary Transactions (Section 3831) to revise and replace the
             current standards on non-monetary transactions. The Company has
             chosen early adoption of this policy, as permitted, effective
             with the interim period commencing August 1, 2005. Retroactive
             application is not permitted.

             The new section requires all non-monetary transactions to be
             measured at the fair value of the asset given up or the asset
             received, whichever is more reliable, unless the transaction
             lacks commercial substance, among other exceptions. The
             commercial substance requirement is met when an entity's future
             cash flows are expected to change significantly as a result of
             the transaction.

             Adoption of this Handbook Section did not have an impact on the
             Company's results from operations or financial position of the
             Company for the period.

        (ii) Asset Retirement Obligations

             The Company adopted CICA Handbook Section 3110 - Asset
             Retirement Obligations (AROs), on November 1, 2004. This section
             describes how to recognize and measure liabilities related to
             legal obligations of retiring property, plant and equipment.

             The Company has identified an asset retirement obligation
             relating to decommissioning costs of a facility located in
             Kanata, Ontario. A liability will be recognized in the period in
             which sufficient information exists to estimate the range of
             potential settlement dates that is required to use a present
             value technique to estimate fair value.

    (b) Measurement Uncertainty

    To determine the assets held for sale related to those operations
    classified as discontinued operations, we are required to make estimates
    and assumptions that affect the reported amounts of these assets and
    liabilities and, therefore, these amounts are subject to measurement
    uncertainty.

    2.  Long-term Investments and Other

    Long-term investments and other includes $13 million relating to the
    Company's investment in Hemosol Corp. Due to measurement uncertainty, the
    Company is not able to determine if proceeds from the sale of the assets
    of Hemosol Corp. will be sufficient to recover the Company's investment.
    The investment is available for sale.

    3.  Intangible Assets

    On February 22, 2006 MDS announced the conclusion of a comprehensive
    mediation process with Atomic Energy of Canada Limited (AECL) related to
    the MAPLE reactor project. Under the new agreement, AECL immediately paid
    MDS $25 million, net of applicable taxes. AECL assumed complete ownership
    of the MAPLE facilities and is now responsible for all costs associated
    with completing the project and the production of medical isotopes. MDS
    and AECL have entered into a 40-year supply agreement similar to the
    current National Research Universal (NRU) supply agreement and AECL will
    acquire all inventories associated with the MAPLE project.

    In accordance with CICA Handbook Section 3831, "Non-monetary
    Transactions", the Company exchanged the MAPLE asset for a 40-year supply
    agreement which has been recorded as an intangible asset at its fair
    value of $344 million. This amount will be amortized on a straight-line
    basis over a 40-year period once commercial production of MAPLE isotopes
    begins. AECL also acquired $53 million of MAPLE-related inventories which
    will be paid for over four years commencing in 2008. As a result of this
    agreement, a long-term note receivable for $43 million has been
    established and MDS has recorded a $10 million non-cash charge this
    quarter.

    4.  Share Capital and Stock Options

    The following table summarizes information on share capital and stock
    options and related matters as at April 30, 2006:

    (number of shares in thousands)                       Number      Amount
    -------------------------------------------------------------------------
    Common shares
    Balance as at October 31, 2005                       142,099    $    847
    Issued during the period                               1,696          28
    -------------------------------------------------------------------------
    Balance as at April 30, 2006                         143,795    $    875
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    During the quarter, the Company did not repurchase or cancel any
    Common shares.

                                                                     Average
                                                                    Exercise
    (number of shares in thousands)                       Number       Price
    -------------------------------------------------------------------------
    Stock options
    Balance as at October 31, 2005                         7,673    $  17.76
    Activity during the period:
       Granted                                               984       20.08
       Exercised                                          (1,511)      13.98
       Cancelled or forfeited                               (559)      20.06
    -------------------------------------------------------------------------
    Balance as at April 30, 2006                           6,587    $  18.78
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    There were 4,039 stock options exercisable as at April 30, 2006.

    5.  Discontinued Operations

    The results of discontinued operations in the quarter were as follows:

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Net revenues                        $   18    $   90    $   57    $  176
    Cost of revenues                       (16)      (75)      (49)     (147)
    Selling, general and administration     (4)      (11)       (8)      (20)
    Depreciation and amortization            -         -        (1)       (2)
    -------------------------------------------------------------------------
    Operating income                        (2)        4        (1)        7
    Gain on sale of Source                   -         -        28         -
    Income taxes                             -         -         -        (2)
    Minority interest                        -        (1)       (1)       (2)
    -------------------------------------------------------------------------
    Income (loss) from discontinued
     operations                         $   (2)   $    3    $   26    $    3
    -------------------------------------------------------------------------
    Basic earnings (loss) per share     $(0.01)   $ 0.02    $ 0.18    $ 0.02
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    The Company has committed to a plan to divest a number of business
    operations that are no longer part of the Company's strategic plan.

    In 2005, the Company approved a plan to divest of its Pharmaceutics,
    Fermentation Biopharmaceutics/Biosafety, and in vitro Pharmacology
    operations within the MDS Pharma Services business. The Company's partner
    in Calgary Laboratory Services LP (CLS) exercised its right to buy out
    the Company's partnership interest, and as a result, this interest was
    classified as a discontinued operation.

    During the quarter MDS, through its subsidiary Bow Valley Diagnostic
    Services Inc., signed an agreement to sell its partnership interest in
    Calgary Laboratory Services to its partner, the Calgary Health Region.
    MDS received proceeds of $21 million from the sale.

    In accordance with Section 3475 of the CICA Handbook, long-lived assets
    classified as held for sale are measured at the lower of carrying value
    and fair value less costs to sell. As at April 30, 2006, assets of
    certain operations are held for sale and the sale of these operations is
    expected to occur within one year.

    Assets held for sale and related liabilities as at April 30, 2006 with
    comparatives as at October 31, 2005 comprised:

                                                            2006        2005
    -------------------------------------------------------------------------
    Accounts receivable                                 $      1    $     32
    Inventory                                                  -          24
    Capital assets                                             4          32
    Goodwill                                                   2          26
    -------------------------------------------------------------------------
      Total assets held for sale(1)                            7         114
    -------------------------------------------------------------------------

    Current liabilities                                        -          38
    Other long-term obligations                                1          12
    -------------------------------------------------------------------------
    Liabilities related to assets held for sale         $      1    $     50
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    (1) Assets held for sale have been classified as current as the Company
        has signed agreements where such assets are expected to be disposed
        of within the current fiscal period.

    6.  Research and Development

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Gross expenditures                  $   14    $   25    $   29    $   48
    Investment tax credits                  (4)       (2)       (5)       (4)
    Recoveries from partners                (7)       (9)      (14)      (18)
    Development costs deferred              (2)       (5)       (3)      (10)
    -------------------------------------------------------------------------
    Research and development expense    $    1    $    9    $    7    $   16
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    For the three months ended April 30, 2006 depreciation and amortization
    includes $1 million (2005 - $1 million) related to research and
    development.

    7.  Restructuring Charges

    An analysis of the activity in the provision through April 30, 2006 is
    as follows:

                                                      Cumulative   Provision
                                     Restruc-          drawdowns     Balance
                                      turing    ----------------    at April
                                      Charge      Cash  Non-cash    30, 2006
    -------------------------------------------------------------------------
    2005:
      Workforce reductions            $   52    $  (38)   $   (1)     $   13
      Equipment and other asset
       writedowns - adjustment             8         -        (8)          -
      Contract cancellation charges       12        (2)        -          10
    -------------------------------------------------------------------------
                                      $   72    $  (40)   $   (9)     $   23
    -------------------------------------------------------------------------
    2006:
      Workforce reductions            $    1    $   (1)   $    -      $    -
      Stock option related charges         2         -        (2)          -
    -------------------------------------------------------------------------
                                      $    3    $   (1)   $   (2)     $    -
    -------------------------------------------------------------------------
                                                                      $   23
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    The Company has continued to utilize the reserves established in prior
    years relating to change initiatives affecting support services, senior
    management reductions, and system implementations.

    8.  Earnings per Share

    (a) Dilution

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
    (number of shares in millions)        2006      2005      2006      2005
    -------------------------------------------------------------------------
    Net income available to Common
     shareholders                       $   16    $   30    $   71    $   60
    Weighted average number of Common
     shares outstanding - basic            143       141       143       141
    Impact of stock options assumed
     exercised                               1         1         1         1
    -------------------------------------------------------------------------
    Weighted average number of Common
     shares outstanding - diluted          144       142       144       142
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    (b) Pro Forma Impact of Stock-Based Compensation

    Compensation expense related to the fair value of stock options granted
    prior to November 1, 2003 is excluded from the determination of net
    income and is, instead, calculated and disclosed on a pro forma basis in
    the notes to the consolidated financial statements. Compensation expense
    for purposes of these pro forma disclosures is determined in accordance
    with a methodology prescribed in CICA Handbook Section 3870 "Stock-Based
    Compensation and Other Stock-Based Payments". The Company used the
    Black-Scholes option valuation model to estimate the fair value of
    options granted.

    For purposes of these pro forma disclosures, the Company's net income and
    basic and diluted earnings per share would have been:

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Net income                          $   16    $   30    $   71    $   60
    Compensation expense for options
     granted prior to November 1, 2003       -        (1)       (2)       (3)
    -------------------------------------------------------------------------
    Net income - pro forma                  16        29        69        57
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Basic and diluted earnings per
     share                              $ 0.12    $ 0.20    $ 0.49    $ 0.40
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    During the quarter, the Company granted 49,700 options (2005 - 410,000)
    at an average exercise price of $19.72 (2005 - $16.76). These options
    have a fair value determined using the Black-Scholes model of $4.39 per
    share, (2005 - $5.28) based on the following assumptions:

                                                           2006        2005
    -------------------------------------------------------------------------
    Risk-free interest rate                                 3.9 %       3.8 %
    Expected dividend yield                                 0.7 %       0.7 %
    Expected volatility                                    0.23        0.34
    Expected time to exercise (years)                      3.25        5.25
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    9.  Other Expenses

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Writedown of other long-term
     assets                             $    -    $    -    $   (1)   $    -
    Unrealized loss on interest rate
     swaps                                  (2)        -        (2)        -
    Loss on sale of Maple assets           (10)        -       (10)        -
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------
    Other expenses                      $  (12)   $    -    $  (13)   $    -
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    10. Post Employment Obligations

    The Company sponsors various post-employment benefit plans including
    defined benefit and contribution pension plans, retirement compensation
    arrangements, and plans that provide extended health care coverage to
    retired employees. All defined benefit pension plans sponsored by the
    Company are funded plans. Other post-employment benefits are unfunded.
    During 2005, the Company amended the terms of certain post-employment
    plans such that effective January 1, 2008, and subject to certain
    transitional conditions, newly retired employees will no longer be
    entitled to extended health care benefits.

    The post employment obligation expense for the quarter was $1 million
    (2005 - $1 million).

    11. Supplementary Cash Flow Information

    Non-cash items affecting net income comprise:

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Depreciation and amortization       $   20    $   17    $   38    $   33
    Minority interest                        2         3         5         5
    Stock option compensation                -         -         3         1
    Deferred revenue                        (2)        -        (5)        -
    Future income taxes                    (12)       (2)      (10)        -
    Equity earnings - net of
     distribution                            8         1         8         2
    Writedown of Maple assets               10         -        10         -
    Other                                    4         4        (1)        1
    -------------------------------------------------------------------------
                                        $   30    $   23    $   48    $   42
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Changes in non-cash working capital balances relating to operations
    include:

                                         Three months to       Six months to
                                                April 30            April 30
    -------------------------------------------------------------------------
                                          2006      2005      2006      2005
    -------------------------------------------------------------------------
    Accounts receivable                 $  (18)   $  (23)   $   11    $   (5)
    Unbilled revenue                       (41)       20       (27)        -
    Inventories                             50         -        51         1
    Accounts payable and deferred
     revenue                                11         5       (86)      (11)
    Income taxes                            (3)       (4)        1        (2)
    Foreign exchange and other               4         1        (7)       (5)
    -------------------------------------------------------------------------
                                        $    3    $   (1)   $  (57)   $  (22)
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    12. Segmented Information

                                              Three months to April 30, 2006
    -------------------------------------------------------------------------
                        Pharma-
                       ceutical           Instru-    Diag-  Corporate
                       Services  Isotopes   ments  nostics  and Other  Total
    -------------------------------------------------------------------------
    Net revenues        $   130  $    83  $    66  $    90  $     -  $   369
    Cost of revenues        (97)     (43)     (38)     (51)       -     (229)
    Selling, general
     and administration     (29)     (15)      (5)     (10)     (12)     (71)
    Research and
     development              -        -       (1)       -        -       (1)
    Depreciation and
     amortization            (8)      (4)      (6)      (2)       -      (20)
    Restructuring
     charges                 (1)       -        -        -        -       (1)
    Other expenses            -      (10)       -        -       (2)     (12)
    Equity earnings
     (loss)                  (1)       -        -        -       (5)      (6)
    -------------------------------------------------------------------------
    Operating income
     (loss)             $    (6) $    11  $    16  $    27  $   (19) $    29
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Total assets        $   884  $   739  $   188  $   241  $   554  $ 2,606
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Capital
     expenditures       $     9  $     -  $     2  $     1  $     3  $    15
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------


                                              Three months to April 30, 2005
    -------------------------------------------------------------------------
                        Pharma-
                       ceutical           Instru-    Diag-  Corporate
                       Services  Isotopes   ments  nostics  and Other  Total
    -------------------------------------------------------------------------
    Net revenues        $   137  $    75  $    65  $    85  $     -  $   362
    Cost of revenues        (98)     (37)     (37)     (50)       -     (222)
    Selling, general
     and administration     (38)     (19)      (5)     (15)      (3)     (80)
    Research and
     development             (1)      (1)      (7)       -        -       (9)
    Depreciation and
     amortization            (7)      (3)      (4)      (2)      (1)     (17)
    Restructuring
     charges                  1        -        -        -        -        1
    Other expenses            -        -        -        -        -        -
    Equity earnings
     (loss)                   -        -        -        1        2        3
    -------------------------------------------------------------------------
    Operating income
     (loss)             $    (6) $    15  $    12  $    19  $    (2) $    38
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Total assets        $ 1,025  $   753  $   214  $   310  $   466  $ 2,768
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Capital
     expenditures       $     4  $     8  $     2  $     -  $     6  $    20
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------


                                                Six months to April 30, 2006
    -------------------------------------------------------------------------
                        Pharma-
                       ceutical           Instru-    Diag-  Corporate
                       Services  Isotopes   ments  nostics  and Other  Total
    -------------------------------------------------------------------------
    Net revenues        $   259  $   165  $   137  $   173  $     -  $   734
    Cost of revenues       (190)     (83)     (82)    (102)       -     (457)
    Selling, general
     and administration     (62)     (28)      (8)     (23)     (19)    (140)
    Research and
     development              -       (1)      (6)       -        -       (7)
    Depreciation and
     amortization           (16)      (8)     (10)      (4)       -      (38)
    Restructuring
     charges                  -        -        -       (1)      (2)      (3)
    Other expenses            -      (10)       -        -       (3)     (13)
    Equity earnings
     (loss)                  (1)       -        -        1       (4)      (4)
    -------------------------------------------------------------------------
    Operating income
     (loss)             $   (10) $    35  $    31  $    44  $   (28) $    72
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Capital
     expenditures       $    17  $     -  $     3  $     2  $     6  $    28
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------


                                                Six months to April 30, 2005
    -------------------------------------------------------------------------
                        Pharma-
                       ceutical           Instru-    Diag-  Corporate
                       Services  Isotopes   ments  nostics  and Other  Total
    -------------------------------------------------------------------------
    Net revenues        $   275  $   150  $   139  $   167  $     -  $   731
    Cost of revenues       (191)     (75)     (79)    (103)       -     (448)
    Selling, general
     and administration     (75)     (30)     (10)     (28)      (8)    (151)
    Research and
     development             (1)      (2)     (14)       -        1      (16)
    Depreciation and
     amortization           (14)      (7)      (7)      (4)      (1)     (33)
    Restructuring
     charges                  1        -        -        -       (1)       -
    Other expenses            -        -        -        -        -        -
    Equity earnings
     (loss)                   -        -        1        1        -        2
    -------------------------------------------------------------------------
    Operating income
     (loss)             $    (5) $    36  $    30  $    33  $    (9) $    85
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    Capital
     expenditures       $     8  $    12  $     4  $     -  $    12  $    36
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    13. Financial Instruments

    The carrying amounts and fair values for all derivative financial
    instruments are as follows:

                                                    Three months to April 30
                                                    2006                2005
    -------------------------------------------------------------------------
                                      Carrying      Fair  Carrying      Fair
                                        amount     Value    amount     Value
    -------------------------------------------------------------------------
    Asset (liability) position:
      Currency forward and option
       - asset                          $    2    $    9    $    3    $   13
      Currency forward and option
       - liabilities                    $    -    $   (1)   $   (3)   $    -
    Interest rate swap and option
     contracts                          $   (5)   $   (4)   $    -    $    1
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    As of April 30, 2006, the Company had outstanding foreign exchange
    contracts and options in place to sell up to US$151 million, and in
    certain circumstances up to US$226 million, at a weighted average
    exchange rate of C$1.1714 maturing over the next 7 months. The Company
    also had interest rate swap contracts that economically convert a
    notional amount of US$80 million of debt from a fixed to a floating
    interest rate. For accounting purposes, the changes in fair value in
    interest rate swaps are charged to income in 2006, whereas hedge
    accounting was applied in 2005.

    Foreign exchange options and interest rate swaps not eligible for hedge
    accounting are included in accounts payable and are marked to market each
    period. A $2 million unrealized loss and a $1 million unrealized gain
    have been recorded in selling, general and administration in the period
    to mark these interest rate swaps and options, respectively, to their
    fair market value.

    14. Income Taxes

    A reconciliation of expected income taxes to reported income tax expense
    is provided below. The effective rate for the quarter was 19%
    (2005 - 22%).

                                                    Three months to April 30
                                                            2006        2005
    -------------------------------------------------------------------------
    Expected income taxes expense at MDS's 35%
     statutory rate                                     $      9    $     13
    Decrease to tax expense as a result of:
      Benefit of tax losses previously not recognized         (4)         (5)
    -------------------------------------------------------------------------
    Reported income tax expense                         $      5    $      8
    -------------------------------------------------------------------------
    -------------------------------------------------------------------------

    15. Commitments

    As at October 31, 2005, MDS had a remaining five-year commitment of
    $211 million related to the outsourcing of the information technology
    infrastructure. Subsequent to the quarter end, MDS renegotiated the
    contract with the current service provider and intends to transition such
    services to new vendors starting late in the third quarter of 2006. At
    this time, the financial impact cannot be determined. The current
    outsourcing partner will support MDS throughout the transition period.

    16. Subsequent Event

    Subsequent to the quarter end, MDS finalized the sale of its
    pharmaceutics operations in Tampa, Florida for proceeds of $5 million.

    17. Comparative Figures

    Certain figures for the previous year have been reclassified to conform
    with the current year's financial statement presentation. In addition,
    segmented information for 2005 has been restated to reflect the
    discontinued operations reported.

SOURCE MDS Inc.
CONTACT: Investor & Media Inquiries, Sharon Mathers, Vice-President,
Investor Relations and External Communications, (416) 675-6777 ext. 4721,
sharon.mathers@mdsinc.com/