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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





FORM 10-Q







|x | Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended March 31, 2010

or



| ̈ | Transition Report Pursuant Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | -------------------------------------------------------------------------------------

For the transition period from
 to
.

Commission file number 1-11181





IRIS
INTERNATIONAL, INC.

(Exact name of registrant as specified in its charter)







|                                |  |                    
|------------------------------- |  | -------------------
|Delaware                        |  | 94-2579751         
|(State or other jurisdiction of |  | (I.R.S. Employer   
|incorporation or organization)  |  | Identification No.)

9158 Eton Avenue

Chatsworth, California 91311

(Address of principal executive offices, zip code)

(818) 527-7000

(Registrants telephone number, including area code)





Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90
days.    Yes  x    No   ̈

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yes   ̈    No   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller
reporting company. See the definitions of large accelerated filer, accelerated filer, and smaller reporting company in Rule 12b-2 of the Exchange Act (Check one):



|                        |  |                                               |  |                           |  |  
|----------------------- |  | --------------------------------------------- |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈                                             |  | Accelerated filer         |  | x
|Non-accelerated filer   |  |  ̈ (Do not check if smaller reporting company) |  | Smaller reporting company |  |  ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange
Act).    Yes   ̈    No  x

As of May 3, 2010, the issuer had 18,256,883 shares of common stock issued and outstanding.









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##### Table of Contents

IRIS INTERNATIONAL, INC.

INDEX TO FORM 10-Q



|           |  |                                                                                                      |  |     
|---------- |  | ---------------------------------------------------------------------------------------------------- |  | ----
|           |  |                                                                                                      |  | Page
|PART I     |  | FINANCIAL INFORMATION                                                                                |  | 3   
|           |  |                                                                                                     
|Item 1.    |  | Financial Statements                                                                                 |  | 3   
|           |  |                                                                                                     
|           |  | Consolidated Balance Sheets as of March 31, 2010 (unaudited) and December 31, 2009                   |  | 3   
|           |  |                                                                                                     
|           |  | Consolidated Statements of Operations for the three months ended March 31, 2010 and 2009 (unaudited) |  | 4   
|           |  |                                                                                                     
|           |  | Consolidated Statements of Cash Flows for the three months ended March 31, 2010 and 2009 (unaudited) |  | 5   
|           |  |                                                                                                     
|           |  | Notes to Consolidated Financial Statements                                                           |  | 6   
|           |  |                                                                                                     
|Item 2.    |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                |  | 14  
|           |  |                                                                                                     
|Item 3.    |  | Quantitative and Qualitative Disclosures About Market Risk                                           |  | 20  
|           |  |                                                                                                     
|Item 4.    |  | Controls and Procedures                                                                              |  | 20  
|           |  |                                                                                                     
|PART II    |  | OTHER INFORMATION                                                                                    |  | 21  
|           |  |                                                                                                     
|Item 1A.   |  | Risk Factors                                                                                         |  | 21  
|           |  |                                                                                                     
|Item 6.    |  | Exhibits                                                                                             |  | 21  
|           | 
|Signatures |  | 22                                                                                                  



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PART I: FINANCIAL INFORMATION



|Item 1. | Financial Statements
|------- | --------------------

IRIS INTERNATIONAL, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except for per share data)



|                                                                                                                              |  |               |         |   |                  |   |        |  
|----------------------------------------------------------------------------------------------------------------------------- |  | ------------- | ------- | - | ---------------- | - | ------ | -
|                                                                                                                              |  | March 31,2010 |         |   | December 31,2009 |  
|                                                                                                                              |  | (unaudited)   |         |   |                  |  
|Assets                                                                                                                        |  |               |         |   |                  |   |        |  
|Current assets:                                                                                                               |  |               |         |   |                  |   |        |  
|Cash and cash equivalents                                                                                                     |  | $             | 36,510  |   |                  | $ | 34,253 |  
|Accounts receivable, net of allowance for doubtful accounts and sales returns of $497 and $391                                |  |               | 18,734  |   |                  |   | 17,715 |  
|Inventories                                                                                                                   |  |               | 11,173  |   |                  |   | 10,866 |  
|Prepaid expenses and other current assets                                                                                     |  |               | 1,271   |   |                  |   | 1,045  |  
|Investment in sales-type leases, current portion                                                                              |  |               | 3,470   |   |                  |   | 3,397  |  
|Deferred tax asset                                                                                                            |  |               | 4,238   |   |                  |   | 4,238  |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total current assets                                                                                                          |  |               | 75,396  |   |                  |   | 71,514 |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Property and equipment, net of accumulated depreciation of $12,465 and $11,713                                                |  |               | 9,808   |   |                  |   | 9,667  |  
|Goodwill                                                                                                                      |  |               | 2,450   |   |                  |   | 2,450  |  
|Core technology, net of accumulated amortization of $358 and $336                                                             |  |               | 1,432   |   |                  |   | 1,454  |  
|Software development costs, net of accumulated amortization of $3,732 and $3,365                                              |  |               | 2,552   |   |                  |   | 2,534  |  
|Deferred tax asset                                                                                                            |  |               | 1,898   |   |                  |   | 1,898  |  
|Investment in sales-type leases, non-current portion                                                                          |  |               | 7,817   |   |                  |   | 7,441  |  
|Other assets                                                                                                                  |  |               | 852     |   |                  |   | 832    |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total assets                                                                                                                  |  | $             | 102,205 |   |                  | $ | 97,790 |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Liabilities and Stockholders Equity                                                                                          |  |               |         |   |                  |   |        |  
|Current liabilities:                                                                                                          |  |               |         |   |                  |   |        |  
|Accounts payable                                                                                                              |  | $             | 6,036   |   |                  | $ | 4,479  |  
|Accrued expenses                                                                                                              |  |               | 6,490   |   |                  |   | 5,761  |  
|Deferred service contract revenue, current portion                                                                            |  |               | 2,745   |   |                  |   | 2,286  |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total current liabilities                                                                                                     |  |               | 15,271  |   |                  |   | 12,526 |  
|Deferred service contract revenue, non-current portion                                                                        |  |               | 57      |   |                  |   | 42     |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total liabilities                                                                                                             |  |               | 15,328  |   |                  |   | 12,568 |  
|Commitments and contingencies                                                                                                 |  |               |         |   |                  |   |        |  
|Shareholders equity:                                                                                                         |  |               |         |   |                  |   |        |  
|Common stock, $0.01 par value; authorized: 50 million shares; issued and outstanding: 18,253,000 shares and 18,147,000
shares |  |               | 183     |   |                  |   | 181    |  
|Preferred Stock, $.01 par value; authorized 1.0 million shares: Callable Series C shares issued and outstanding:
none         |  |               |        |   |                  |   |       |  
|Additional paid-in capital                                                                                                    |  |               | 88,688  |   |                  |   | 87,692 |  
|Other comprehensive income                                                                                                    |  |               | 175     |   |                  |   | 560    |  
|Accumulated deficit                                                                                                           |  |               | (2,169  | ) |                  |   | (3,211 | )
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total shareholders equity                                                                                                    |  |               | 86,877  |   |                  |   | 85,222 |  
|                                                                                                                              |  |               |         |   |                  |   |        |  
|Total liabilities and shareholders equity                                                                                    |  | $             | 102,205 |   |                  | $ | 97,790 |  
|                                                                                                                              |  |               |         |   |                  |   |        |  

The accompanying notes are an integral part of these consolidated financial statements.



3



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IRIS INTERNATIONAL, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited  in thousands, except for per share data)



|                                                           |  |                                     |        |   |      |   |        |  
|---------------------------------------------------------- |  | ----------------------------------- | ------ | - | ---- | - | ------ | -
|                                                           |  | For the three monthsended March 31, |       
|                                                           |  | 2010                                |        |   | 2009 |  
|Sales of IVD instruments                                   |  | $                                   | 7,889  |   |      | $ | 5,453  |  
|Sales of IVD consumables and service                       |  |                                     | 14,391 |   |      |   | 12,522 |  
|Sales of sample processing instruments and supplies        |  |                                     | 3,700  |   |      |   | 3,600  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Total revenues                                             |  |                                     | 25,980 |   |      |   | 21,575 |  
|                                                           |  |                                     |        |   |      |   |        |  
|Cost of goods  IVD instruments                            |  |                                     | 5,068  |   |      |   | 3,136  |  
|Cost of goods  IVD consumables and service                |  |                                     | 5,955  |   |      |   | 4,912  |  
|Cost of goods  sample processing instruments and supplies |  |                                     | 1,703  |   |      |   | 1,832  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Total cost of goods sold                                   |  |                                     | 12,726 |   |      |   | 9,880  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Gross profit                                               |  |                                     | 13,254 |   |      |   | 11,695 |  
|                                                           |  |                                     |        |   |      |   |        |  
|Marketing and selling                                      |  |                                     | 4,427  |   |      |   | 3,884  |  
|General and administrative                                 |  |                                     | 3,737  |   |      |   | 3,147  |  
|Research and development, net                              |  |                                     | 3,688  |   |      |   | 2,809  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Total operating expenses                                   |  |                                     | 11,852 |   |      |   | 9,840  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Operating income                                           |  |                                     | 1,402  |   |      |   | 1,855  |  
|Other income (expense):                                    |  |                                     |        |   |      |   |        |  
|Interest income                                            |  |                                     | 237    |   |      |   | 203    |  
|Interest expense                                           |  |                                     | (3     | ) |      |   | (4     | )
|Other expense                                              |  |                                     | (57    | ) |      |   | (7     | )
|                                                           |  |                                     |        |   |      |   |        |  
|Income before provision for income taxes                   |  |                                     | 1,579  |   |      |   | 2,047  |  
|Provision for income taxes                                 |  |                                     | 537    |   |      |   | 655    |  
|                                                           |  |                                     |        |   |      |   |        |  
|Net income                                                 |  | $                                   | 1,042  |   |      | $ | 1,392  |  
|                                                           |  |                                     |        |   |      |   |        |  
|Net income per share  basic                               |  | $                                   | 0.06   |   |      | $ | 0.08   |  
|                                                           |  |                                     |        |   |      |   |        |  
|Net income per share  diluted                             |  | $                                   | 0.06   |   |      | $ | 0.08   |  
|                                                           |  |                                     |        |   |      |   |        |  
|Weighted average common shares outstanding  basic         |  |                                     | 17,891 |   |      |   | 17,609 |  
|                                                           |  |                                     |        |   |      |   |        |  
|Weighted average common shares outstanding  diluted       |  |                                     | 18,025 |   |      |   | 17,800 |  
|                                                           |  |                                     |        |   |      |   |        |  

The accompanying notes are an integral part of these consolidated financial statements.



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IRIS INTERNATIONAL, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited  in thousands)



|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------- | ------ | - | ---- | - | ------ | -
|                                                                                                                                                                    |  | For the three monthsended March 31, |       
|                                                                                                                                                                    |  | 2010                                |        |   | 2009 |  
|Cash flows from operating activities:                                                                                                                               |  |                                     |        |   |      |   |        |  
|Net income                                                                                                                                                          |  | $                                   | 1,042  |   |      | $ | 1,392  |  
|Adjustments to reconcile net income to net cash provided by operating activities:                                                                                   |  |                                     |        |   |      |   |        |  
|Loss on disposal of fixed assets                                                                                                                                    |  |                                     |       |   |      |   | 39     |  
|Tax benefit from stock option exercises                                                                                                                             |  |                                     |       |   |      |   | 246    |  
|Depreciation and amortization                                                                                                                                       |  |                                     | 1,006  |   |      |   | 816    |  
|Common stock and stock based compensation                                                                                                                           |  |                                     | 1,090  |   |      |   | 879    |  
|Changes in operating assets and liabilities:                                                                                                                        |  |                                     |        |   |      |   |        |  
|Accounts receivable                                                                                                                                                 |  |                                     | (1,189 | ) |      |   | 3,105  |  
|Inventories                                                                                                                                                         |  |                                     | (307   | ) |      |   | (3,181 | )
|Prepaid expenses and other current assets                                                                                                                           |  |                                     | (246   | ) |      |   | 1,652  |  
|Investment in sales-type leases                                                                                                                                     |  |                                     | (449   | ) |      |   | 97     |  
|Other assets                                                                                                                                                        |  |                                     |       |   |      |   | (22    | )
|Accounts payable                                                                                                                                                    |  |                                     | 1,557  |   |      |   | 359    |  
|Accrued expenses                                                                                                                                                    |  |                                     | 730    |   |      |   | (1,338 | )
|Deferred service contract revenue                                                                                                                                   |  |                                     | 475    |   |      |   | 39     |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Net cash provided by operating activities                                                                                                                           |  |                                     | 3,709  |   |      |   | 4,083  |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Cash flows from investing activities:                                                                                                                               |  |                                     |        |   |      |   |        |  
|Purchase of assets from European distributor                                                                                                                        |  |                                     | (671   | ) |      |   |       |  
|Acquisition of property and equipment                                                                                                                               |  |                                     | (118   | ) |      |   | (637   | )
|Software development costs capitalized                                                                                                                              |  |                                     | (184   | ) |      |   | (213   | )
|Sale of short-term investments in marketable securities                                                                                                             |  |                                     |       |   |      |   | 2,157  |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Net cash (used in) provided by investing activities                                                                                                                 |  |                                     | (973   | ) |      |   | 1,307  |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Cash flows from financing activities:                                                                                                                               |  |                                     |        |   |      |   |        |  
|Issuance of common stock and warrants for cash                                                                                                                      |  |                                     |       |   |      |   | 25     |  
|Repurchase of common stock                                                                                                                                          |  |                                     | (121   | ) |      |   | (2,556 | )
|Tax benefit (expense) from stock option exercises                                                                                                                   |  |                                     | 28     |   |      |   | (246   | )
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Net cash used in financing activities                                                                                                                               |  |                                     | (93    | ) |      |   | (2,777 | )
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Effect of exchange rate changes on cash and cash equivalents                                                                                                        |  |                                     | (386   | ) |      |   | (313   | )
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Net increase in cash and cash equivalents                                                                                                                           |  |                                     | 2,257  |   |      |   | 2,300  |  
|Cash and cash equivalents at beginning of period                                                                                                                    |  |                                     | 34,253 |   |      |   | 24,445 |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Cash and cash equivalents at end of period                                                                                                                          |  | $                                   | 36,510 |   |      | $ | 26,745 |  
|                                                                                                                                                                    |  |                                     |        |   |      |   |        |  
|Supplemental schedule of non-cash financing activities:                                                                                                             |  |                                     |        |   |      |   |        |  
|During the three months ended March 31, 2010, the Company disposed of property and equipment with a cost and accumulated
depreciation of $66 and $66, respectively. |  |                                     |        |   |      |   |        |  
|Supplemental disclosure of cash flow information:                                                                                                                   |  |                                     |        |   |      |   |        |  
|Cash paid for income taxes                                                                                                                                          |  | $                                   | 197    |   |      | $ | 177    |  
|Cash paid for interest                                                                                                                                              |  | $                                   | 3      |   |      | $ | 4      |  

The accompanying notes
are an integral part of these consolidated financial statements.



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



|1. | Company History
|-- | ---------------

IRIS
International, Inc. was incorporated in California in 1979 and reincorporated in 1987 in Delaware. The Company designs, develops, manufactures and markets in vitro diagnostic (IVD) products, including IVD imaging systems based on
patented and proprietary neural network-based Automated Particle Recognition (APR) software to enable high-speed digital processing to classify and display images and describe the morphology of microscopic particles, urine chemistry analyzers
and related chemistry test strips and accessories, molecular diagnostics assays based on the Companys Nucleic Acid Detection Immuno-Assay (NADiA) technology, as well as special purpose centrifuges and other small instruments for automating
microscopic procedures and DNA processing performed in clinical laboratories.



|2. | Interim Financial Reporting
|-- | ---------------------------

Basis of Presentation The financial statements have been prepared in accordance with the instructions to Form 10-Q
under the Securities Exchange Act of 1934, as amended, and do not include all of the information and note disclosures required by accounting principles generally accepted in the United States (GAAP). These financial statements should be
read in conjunction with the Consolidated Financial Statements and accompanying notes contained in the Companys Annual Report on Form 10-K for the year ended December 31, 2009.

The Consolidated Financial Statements included herein are unaudited, but in the opinion of management, such financial statements include
all adjustments, including normal recurring adjustments, necessary to summarize fairly the Companys financial position and results of operations for the interim periods. The results reported in these Consolidated Financial Statements for the
interim periods should not be taken as indicative of results that may be expected for the entire year.

Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the
date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The significant estimates in the preparation of the consolidated financial statements relate to the assessment of the carrying allowance
for doubtful accounts, inventory reserves, the useful lives, fair value and recoverability of carrying value of long-lived and intangible assets, including goodwill, unearned income on sales-type leases, estimated provisions for warranty costs,
laboratory information system implementations and deferred tax assets. Actual results and outcomes may differ from managements estimates and assumptions.

Earnings Per Share The Company computes and presents earnings per share in accordance with Financial Accounting Standards
Board (FASB) ASC Topic 260, Earnings per share. Basic earnings per share are computed by dividing net income by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net
income by the weighted average number of common shares and common stock equivalents outstanding, calculated on the treasury stock method for options and warrants using the average market prices during the period. The weighted average number of
outstanding antidilutive common stock options excluded from the computation of diluted net income per common share for the three months ended March 31, 2010 and 2009 was 1,818,000 and 1,488,000 respectively. A reconciliation of the shares used
in the calculation of basic and diluted earnings per common share is as follows:



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



|                                                     |  |                                     |  |       
|---------------------------------------------------- |  | ----------------------------------- |  | ------
|                                                     |  | For the three monthsended March 31,
|(in thousands)                                       |  | 2010                                |  | 2009  
|Weighted average common shares outstanding  basic   |  | 17,891                              |  | 17,609
|Dilutive stock options and warrants                  |  | 134                                 |  | 191   
|                                                     |  |                                     |  |       
|Weighted average common shares outstanding  diluted |  | 18,025                              |  | 17,800
|                                                     |  |                                     |  |       

Foreign Currency Hedge  The Company
conducts business in certain foreign markets, primarily in the European Union and Asia. To mitigate the potential impact of adverse fluctuations in the U.S. Dollar exchange rate for these currencies, the Company periodically purchases foreign
currency forward contracts. The Company does not speculate in these hedging instruments in order to profit from foreign currency exchanges nor does the Company enter into trades for which there are no underlying exposures.

Under FASB ASC Topic 815, Accounting for Derivative Instruments and Hedging Activities, the Company documents all relationships
between hedging instruments and hedged items, as well as its risk management objective for undertaking these hedging transactions. This process includes relating the forward contracts that are designated as fair value or cash flow hedges to specific
assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the inception of the hedge and on an ongoing basis, whether each derivative is highly effective in
offsetting changes in fair values or cash flows of the hedged items.

At March 31, 2010 and 2009, the Company did not
have any foreign currency forward contracts.



|3. | Inventories
|-- | -----------

Inventories
consist of the following:



|                                        |  |               |        |                  |   |       
|--------------------------------------- |  | ------------- | ------ | ---------------- | - | ------
|(in thousands)                          |  | March 31,2010 |        | December 31,2009
|Finished goods                          |  | $             | 3,247  |                  | $ | 2,595 
|Work-in-process                         |  |               | 207    |                  |   | 214   
|Raw materials, parts and sub-assemblies |  |               | 7,719  |                  |   | 8,057 
|                                        |  |               |        |                  |   |       
|Inventories                             |  | $             | 11,173 |                  | $ | 10,866
|                                        |  |               |        |                  |   |       



|4. | Sales-type Leases
|-- | -----------------

The
components of net investment in sales-type leases consist of the following:



|                                                         |  |               |        |   |                  |   |        |  
|-------------------------------------------------------- |  | ------------- | ------ | - | ---------------- | - | ------ | -
|(in thousands)                                           |  | March 31,2010 |        |   | December 31,2009 |  
|Total minimum lease payments                             |  | $             | 13,399 |   |                  | $ | 12,735 |  
|Less: unearned income                                    |  |               | (2,112 | ) |                  |   | (1,897 | )
|                                                         |  |               |        |   |                  |   |        |  
|Net investment in sales-type leases                      |  |               | 11,287 |   |                  |   | 10,838 |  
|Less: current portion                                    |  |               | (3,470 | ) |                  |   | (3,397 | )
|                                                         |  |               |        |   |                  |   |        |  
|Net investment in sales-type leases, non-current portion |  | $             | 7,817  |   |                  | $ | 7,441  |  
|                                                         |  |               |        |   |                  |   |        |  



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



Future minimum lease payments due from customers under sales-type leases for each of the
five succeeding years:



|                             |  |   |       
|---------------------------- |  | - | ------
|(In thousands)               |  |  
|Year Ending December 31,     |  |   |       
|2010 (nine months remaining) |  | $ | 2,707 
|2011                         |  |   | 2,955 
|2012                         |  |   | 2,173 
|2013                         |  |   | 1,710 
|2014                         |  |   | 1,348 
|Thereafter                   |  |   | 394   
|                             |  |   |       
|                             |  | $ | 11,287
|                             |  |   |       



|5. | Bank Credit Facility
|-- | --------------------

The
Company has a credit facility with a commercial bank. The credit facility consists of a $6.5 million revolving line of credit for working capital and a $10.0 million line of credit for acquisitions and product opportunities. The credit facility has
variable interest rates, which will change from time to time based on changes to either the LIBOR rate or the lenders prime rate. Borrowings under the credit facility are secured by all of the Companys assets and mature in June 2010 and
June 2015, respectively.

As of March 31, 2010 and December 31, 2009, there were no borrowings under the credit
facility. The Company, however, is subject to certain financial and non-financial covenants under the credit facility with the bank and as of March 31, 2010, the Company was in compliance with these covenants.



|6. | Income Taxes
|-- | ------------

On a
quarterly basis, the Company estimates the effective tax rate for the full fiscal year and records a quarterly income tax provision based on the anticipated rate. As the year progresses, the Company refines its estimate based on the facts and
circumstances by each tax jurisdiction. The effective tax rates for the three months ended March 31, 2010 and 2009 were 34% and 32%, respectively.

The Company adopted the provisions of FASB ASC Topic 740, Accounting for Uncertainty in Income Taxes-an Interpretation of FASB ASC
Topic 740, on January 1, 2007.

The Company will recognize potential interest and penalties related to income tax
positions as a component of the provision for income taxes on the consolidated statements of income in any future periods in which the Company must record a liability. Since the Company has not recorded a liability at March 31, 2010, there was
no impact on the Companys effective tax rate.



|7. | Stock-Based Compensation
|-- | ------------------------

The Company accounts for stock-based compensation pursuant to FASB ASC Topic 505, Share-Based Payment, which requires
compensation costs related to share-based transactions, including employee stock options, to be recognized in the financial statements based on fair value. Share-based compensation expense for the three months ended March 31, 2010 and 2009
includes incremental share-based compensation expense as follows:



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



|                           |  |                                     |       |      |   |    
|-------------------------- |  | ----------------------------------- | ----- | ---- | - | ---
|                           |  | For the threemonths 
endedMarch 31,
|(in thousands)             |  | 2010                                |       | 2009
|Cost of sales              |  | $                                   | 114   |      | $ | 92 
|Marketing and selling      |  |                                     | 187   |      |   | 134
|General and administrative |  |                                     | 565   |      |   | 512
|Research and development   |  |                                     | 224   |      |   | 141
|                           |  |                                     |       |      |   |    
|Stock-based compensation   |  | $                                   | 1,090 |      | $ | 879
|                           |  |                                     |       |      |   |    

Stock Options

Stock option activity during the three months ended March 31, 2010 is as follows:



|                                             |  |        |   |  |                                       |       |                                         |           |                         |   |      
|-------------------------------------------- |  | ------ | - |  | ------------------------------------- | ----- | --------------------------------------- | --------- | ----------------------- | - | -----
|(in thousands, except for per share amounts) |  | Shares |   |  | WeightedAverageExercisePrice PerShare |       | WeightedAverageRemainingContractualTerm |           | AggregateIntrinsicValue
|Outstanding at January 1, 2010               |  | 2,205  |   |  | $                                     | 12.97 |                                         | 3.7 years |                         | $ | 3,445
|Granted                                      |  | 356    |   |  | $                                     | 11.91 |                                         |           |                         |   |      
|Exercised                                    |  | (21    | ) |  | $                                     | 1.40  |                                         |           |                         |   |      
|Canceled or expired                          |  | (2     | ) |  | $                                     | 13.16 |                                         |           |                         |   |      
|                                             |  |        |   |  |                                       |       |                                         |           |                         |   |      
|Outstanding at March 31, 2010                |  | 2,538  |   |  | $                                     | 12.91 |                                         | 4.0 years |                         | $ | 1,278
|                                             |  |        |   |  |                                       |       |                                         |           |                         |   |      
|Exercisable at March 31, 2010                |  | 1,461  |   |  | $                                     | 14.00 |                                         | 2.9 years |                         | $ | 1,203
|                                             |  |        |   |  |                                       |       |                                         |           |                         |   |      

The aggregate intrinsic value in the table above represents the total pretax intrinsic value (the
difference between the closing stock price on March 31, 2010 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders, had all option holders exercised their options on
March 31, 2010. Total intrinsic value of options exercised for the three months ended March 31, 2010 amounted to $193,000. As of March 31, 2010, total unrecognized stock-based compensation expense related to unvested stock options was
$4,597,000, which is expected to be recognized over the remaining weighted average period of approximately 3.0 years.

The
Compensation Committee of the board of directors determines the total value of the stock based compensation grants. The exercise price of options is the closing price on the date the options are granted. Payment of the exercise price may be made
either in cash or with shares of common stock that have been held at least six months. The options generally vest over four years and expire either five or ten years from the date of grant. The fair value of each option grant is estimated on the
date of the grant using the Black-Scholes option-pricing model with the following weighted average assumptions:



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



|                        |  |                                    |   |  |      |  
|----------------------- |  | ---------------------------------- | - |  | ---- | -
|                        |  | For the threemonths endedMarch 31, |  
|                        |  | 2010                               |   |  | 2009 |  
|Risk free interest rate |  | 2.0                                | % |  | 1.9  | %
|Expected lives (years)  |  | 4.0                                |   |  | 4.0  |  
|Expected volatility     |  | 59.0                               | % |  | 59.7 | %
|Expected dividend yield |  | 0                                  | % |  | 0    | %

The expected
volatilities are based on the historical volatility of the Companys stock. The observation is made on a weekly basis. The expected terms of the stock options are based on the average vesting period on a basis consistent with the historical
experience for similar option grants. The risk-free interest rate is consistent with the expected terms of the stock options and based on the U.S. Treasury yield curve in effect at the time of grant. The Company estimates forfeiture rates based on
historical data.

A summary of the Companys non-vested stock options during the three months ended March 31, 2010
is as follows:



|                                               |  |        |   |  |                                              |      
|---------------------------------------------- |  | ------ | - |  | -------------------------------------------- | -----
|(In thousands except for fair value per share) |  | Shares |   |  | WeightedAverageGrant DateFair ValuePer Share
|Non-vested options at January 1, 2010          |  | 933    |   |  | $                                            | 11.26
|Granted                                        |  | 356    |   |  | $                                            | 11.91
|Vested                                         |  | (211   | ) |  | $                                            | 11.47
|Forfeited or expired                           |  | (1     | ) |  | $                                            | 13.16
|                                               |  |        |   |  |                                              |      
|Non-vested options at March 31, 2010           |  | 1,077  |   |  | $                                            | 11.44
|                                               |  |        |   |  |                                              |      

Restricted Shares

The Company began awarding restricted shares of its common stock in 2006. In March 2009, the Company began to grant
restricted stock units to its non-employee directors and to certain employees. Such awards generally require that certain performance conditions and service conditions be met before the awards vest. Restricted shares currently vest 25% after one
year and 61/4% quarterly thereafter. However, non
employee directors vest 90 days after grant date. Unvested restricted shares are forfeited if the recipients employment terminates for any reason other than death, disability or special circumstances as determined by the Compensation Committee
of the Companys board of directors. Restricted share activity during the three months ended March 31, 2010 was as follows:



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



|                                                |  |        |   |  |                                              |      
|----------------------------------------------- |  | ------ | - |  | -------------------------------------------- | -----
|(in thousands, except for fair value per share) |  | Shares |   |  | WeightedAverageGrant DateFair ValuePer Share
|Non-vested shares at January 1, 2010            |  | 248    |   |  | $                                            | 11.44
|Granted                                         |  | 97     |   |  | $                                            | 11.86
|Vested                                          |  | (47    | ) |  | $                                            | 11.56
|Forfeited                                       |  | (1     | ) |  | $                                            | 10.84
|                                                |  |        |   |  |                                              |      
|Non-vested shares at March 31, 2010             |  | 297    |   |  | $                                            | 11.56
|                                                |  |        |   |  |                                              |      

Fair value of the Companys restricted shares is based on the Companys closing stock
price on the date of grant. As of March 31, 2010, total unrecognized stock-based compensation expense related to non-vested restricted share grants was $3,292,000 which is expected to be recognized over the remaining weighted average period of
approximately 1.7 years.



|8. | Contingencies
|-- | -------------

Litigation

From time to time, the Company is party to certain litigation arising in the normal course of business. Management
believes that the resolution of such matters will not have a material adverse effect on the Companys financial position, results of operations or cash flows.

Guarantees

The Company
enters into indemnification provisions under (i) agreements with other companies in the ordinary course of business, typically with business partners, contractors, customers and landlords, and (ii) agreements with investors. Under these
provisions, the Company generally indemnifies and holds harmless the indemnified party for losses suffered or incurred by the indemnified party as a result of the Companys activities or, in some cases, as a result of the indemnified
partys activities under the agreement. These indemnification provisions often include indemnifications relating to representations made by the Company with regard to intellectual property rights. These indemnification provisions generally
survive termination of the underlying agreement. In addition, in some cases, the Company has agreed to reimburse employees for certain expenses and to provide salary continuation during short-term disability. The maximum potential amount of future
payments the Company could be required to make under these indemnification provisions is unlimited. The Company reviews its exposure under these agreements no less than annually, or more frequently when events indicate. As a result, the Company
believes the estimated fair value of these agreements is minimal. Accordingly, the Company has not recorded any liabilities for these agreements as of March 31, 2010 or December 31, 2009.



|9. | Subsequent Events
|-- | -----------------

The
Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosure.
The Company evaluated subsequent events through the date the financial statements were issued.



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



|10. | Segments and Geographic Information
|--- | -----------------------------------

The Companys operations are organized on the basis of products and related services and under FASB ASC Topic 280, Segment
Reporting, the Company operates in two segments: (1) IVD and (2) sample processing.

The IVD segment designs,
develops, manufactures, markets and distributes in-vitro diagnostic systems based on patented and proprietary technology for automating microscopic and clinical chemistry procedures for urinalysis. The segment also provides ongoing sales of
consumables and services necessary for the operation of installed urinalysis workstations. In the United States, these products are mostly sold through a direct sales and service force. Internationally, these products are sold and serviced through
distributors, with the exception of France, Germany, United Kingdom, Ireland and Puerto Rico. The segment also includes the operations of the Iris Molecular Diagnostics, or IMD, subsidiary.

The sample processing segment designs, develops, manufactures and markets a variety of benchtop centrifuges, small instruments and
supplies. These products are used primarily for manual specimen preparation and dedicated applications in coagulation, cytology, hematology, urinalysis and DNA processing. These products are sold worldwide through distributors.

The accounting policies of the segments are the same as those described in the Summary of Significant Accounting Policies in
the Companys Annual Report on Form 10-K for the fiscal year ended December 31, 2009. The Company evaluates the performance of its segments and allocates resources to them based on earnings before income taxes, excluding corporate charges.



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IRIS INTERNATIONAL, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  continued



The tables below present information about reported segments for the three months ended
March 31, 2010 and 2009:



|                                          |  |     |        |                  |   |                              |  |   |        |   |  |   |        
|----------------------------------------- |  | --- | ------ | ---------------- | - | ---------------------------- |  | - | ------ | - |  | - | -------
|(In thousands)                            |  | IVD |        | SampleProcessing |   | UnallocatedCorporateExpenses |  |   | Total 
|For the three months ended March 31, 2010 |  |     |        |                  |   |                              |  |   |        |   |  |   |        
|Revenues                                  |  | $   | 22,280 |                  | $ | 3,700                        |  | $ |       |   |  | $ | 25,980 
|Interest income                           |  |     | 229    |                  |   | 8                            |  |   |       |   |  |   | 237    
|Interest expense                          |  |     | 3      |                  |   |                             |  |   |       |   |  |   | 3      
|Depreciation and amortization             |  |     | 950    |                  |   | 52                           |  |   | 4      |   |  |   | 1,006  
|Segment pre-tax profit                    |  |     | 1,920  |                  |   | 1,149                        |  |   | (1,490 | ) |  |   | 1,579  
|Segment assets                            |  |     | 67,339 |                  |   | 28,730                       |  |   | 6,136  |   |  |   | 102,205
|Investment in long-lived assets           |  |     | 24,556 |                  |   | 356                          |  |   |       |   |  |   | 24,912 
|                                          |  |     |        |                 
|For the three months ended March 31, 2009 |  |     |        |                  |   |                              |  |   |        |   |  |   |        
|Revenues                                  |  | $   | 17,975 |                  | $ | 3,600                        |  | $ |       |   |  | $ | 21,575 
|Interest income                           |  |     | 197    |                  |   | 6                            |  |   |       |   |  |   | 203    
|Interest expense                          |  |     | 4      |                  |   |                             |  |   |       |   |  |   | 4      
|Depreciation and amortization             |  |     | 745    |                  |   | 67                           |  |   | 4      |   |  |   | 816    
|Segment pre-tax profit                    |  |     | 2,458  |                  |   | 976                          |  |   | (1,387 | ) |  |   | 2,047  
|Segment assets                            |  |     | 58,791 |                  |   | 24,796                       |  |   | 5,292  |   |  |   | 88,879 
|Investment in long-lived assets           |  |     | 25,304 |                  |   | 384                          |  |   |       |   |  |   | 25,688 

The Company ships
products from two locations in the United States and one location in Germany. Substantially all long-lived assets are located in the United States. Sales to international customers amounted to approximately $9.3 million and $6.8 million during the
three months ended March 31, 2010 and 2009, respectively.

Segment assets attributed to corporate unallocated expenses
are deferred taxes. Long-lived assets include property and equipment, intangible assets, long-term portion of inventory and other long-term assets. Deferred income tax is excluded from long-lived assets.



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##### Table of Contents

|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------

Overview

IRIS
International, Inc. consists of three operating units in two business segments as determined in accordance with FASB ASC Topic 280, Segment Reporting. Our in-vitro diagnostics, or IVD, segment also called Iris Diagnostics Division, designs,
manufactures and markets IVD systems, consumables and supplies for urinalysis and body fluids. With the acquisition of Leucadia Technologies, Inc., or Leucadia, in 2006 we created our Iris Molecular Diagnostics, or IMD, subsidiary whose operations
are included as part of the Iris Diagnostics Division. Our Sample Processing segment markets small centrifuges and other processing equipment and accessories for rapid specimen processing.

The initial applications for our technology have been in the urinalysis market and we are the leading worldwide
provider of automated urine microscopy systems, with more than 2,700 iQ microscopy analyzers shipped to date in over 50 countries. We generate revenues primarily from sales of IVD instruments, IVD consumables and service and sample processing
instruments and supplies. Revenues from IVD instruments include global sales of urine microscopy analyzers and sales of chemistry analyzers manufactured by us and a urine chemistry analyzer, the AUTION MAX AX-4280, sourced from a Japanese
manufacturer for the U.S. market only. We have secured sufficient inventory of the AUTION MAX AX-4280 to cover our estimated U.S. sales of fully automated chemistry analyzers through the end of 2010. We initiated sales of the
iChem®VELOCITY, our proprietary fully-automated chemistry analyzer internationally in September 2008 and
sold approximately 250 of the iChem VELOCITY to date. Sales of this instrument in the United States will be initiated upon us attaining U.S. Food and Drug Administration (FDA) clearance. We plan to submit a 510(k) application with the FDA for and
expect market clearance of the iChem VELOCITY in the United States in the second half of 2010. Consumables include products such as chemical reagents, urine test strips, calibrators and controls. Service revenues are derived primarily from annual
service contracts purchased by our domestic customers after the initial year of sale, which is covered by product warranty and spare parts purchased by international customers. Once the analyzers are installed, we generate recurring revenue from
sales of consumables. Consumable and service revenue should continue to expand as the installed base of related instruments increases. Revenue is also generated from sales of sample processing instruments and related supplies and consumables, which
primarily consists of centrifuge systems, DNA processing workstations and blood analysis products.

United States sales of our
urinalysis systems are direct to the end-user through our sales force. International sales, with the exception of France, Germany, United Kingdom, Ireland, and Puerto Rico where sales are direct to end users, are through independent distributors. In
January 2010, we completed the purchase of certain European assets relating to the distribution of IRIS products in the United Kingdom, Ireland and Germany. The assets purchased consist primarily of installed IRIS instruments leased to customers,
the related lease agreements, and service contracts. We paid $841,000 for these assets and initially recorded this within property and equipment. We are still evaluating the allocation of the purchase price to the assets acquired as negotiations
over the final settlement price are still in process. Our incremental revenue relating to the acquired distributors business was $498,000 for the three months ended March 31, 2010. International sales represented 36% of consolidated
revenues during the first three months of 2010, as compared to 32% during the first three months of 2009. Since the substantial majority of international sales are made through independent distributors, gross profit margin is lower than domestic
sales of the same products, but we incur minimal sales and marketing costs for such sales. Our Sample Processing products are sold worldwide primarily through distributors.



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##### Table of Contents

We are developing a prostate cancer prognostic diagnostic test, called
NADiA®ProsVue, to monitor levels of PSA that currently are undetectable with current testing methods, in
men with prostate cancer who have undergone radical prostatectomy, or removal of the prostate gland. We met with the FDA on several occasions to review our NADiA ProsVue Pre-Investigational Device Exemption (Pre-IDE) submission and reached an
agreement in principle on the product claim and clinical end points to be used in a large clinical study. In the first quarter of 2010, we commenced a multi-center retrospective clinical study consisting of approximately 300 patients with serially
collected blood samples, retained over an eight year period. The clinical study has been completed and we believe the study data meets the pre-established primary and secondary end points. On April 28, 2010, we submitted our NADiA ProsVue
510(k) pre-market notification application to the FDA requesting clearance of a prognostic claim, which we expect in the second half of 2010.

Critical Accounting Policies

The preparation of financial statements and related disclosures in conformity with U.S. generally accepted accounting principles and our
discussion and analysis of our financial condition and results of operations require us to make judgments, assumptions, and estimates that affect the amounts reported in our condensed consolidated financial statements and accompanying notes. We base
our estimates on historical experience and on various other assumptions we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. We regularly
discuss with our audit committee the basis of our estimates. Actual results may differ from these estimates and such differences may be material.

A description of our critical accounting policies that represent the more significant judgments and estimates used in the preparation of
our financial statements was provided in the Managements Discussion and Analysis of Financial Condition and Results of Operations section of our Annual Report on Form 10-K for the year ended December 31, 2009. There have been no material
changes in these critical accounting policies since December 31, 2009.



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##### Table of Contents

Results of Operations

The following table summarizes results of operations data for the periods indicated. The percentages in the table are based on total
revenues, with the exception of percentages for gross profit margins, which are computed on related revenue, and income taxes, which are based on income before taxes.



|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|------------------------------------------ |  | --------------------------- | ------ |  | --- | - | ---- | - | ------ |  | --- | -
|                                           |  | Three months endedMarch 31, |       
|(in thousands)                             |  | 2010                        |        |  |     |   | 2009 |   |        | 
|Revenues                                   |  |                             |        |  |     |   |      |   |        |  |     |  
|IVD instruments                            |  | $                           | 7,889  |  | 30  | % |      | $ | 5,453  |  | 25  | %
|IVD consumables and service                |  |                             | 14,391 |  | 56  | % |      |   | 12,522 |  | 58  | %
|Sample Processing instruments and supplies |  |                             | 3,700  |  | 14  | % |      |   | 3,600  |  | 17  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Total revenues                             |  |                             | 25,980 |  | 100 | % |      |   | 21,575 |  | 100 | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Gross profit(1)                            |  |                             |        |  |     |   |      |   |        |  |     |  
|IVD instruments                            |  |                             | 2,821  |  | 36  | % |      |   | 2,317  |  | 42  | %
|IVD consumable and service                 |  |                             | 8,436  |  | 59  | % |      |   | 7,610  |  | 61  | %
|Sample Processing instruments and supplies |  |                             | 1,997  |  | 54  | % |      |   | 1,768  |  | 49  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Gross profit                               |  |                             | 13,254 |  | 51  | % |      |   | 11,695 |  | 54  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Operating expenses                         |  |                             |        |  |     |   |      |   |        |  |     |  
|Marketing and selling                      |  |                             | 4,427  |  | 17  | % |      |   | 3,884  |  | 18  | %
|General and administrative                 |  |                             | 3,737  |  | 14  | % |      |   | 3,147  |  | 15  | %
|Research and development, net              |  |                             | 3,688  |  | 14  | % |      |   | 2,809  |  | 13  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Total operating expenses                   |  |                             | 11,852 |  | 46  | % |      |   | 9,840  |  | 46  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Operating income                           |  |                             | 1,402  |  | 5   | % |      |   | 1,855  |  | 9   | %
|Other income                               |  |                             | 177    |  |     |   |      |   | 192    |  |     |  
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Income before income taxes                 |  |                             | 1,579  |  | 6   | % |      |   | 2,047  |  | 9   | %
|Income taxes(2)                            |  |                             | 537    |  | 34  | % |      |   | 655    |  | 32  | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  
|Net income                                 |  | $                           | 1,042  |  | 4   | % |      | $ | 1,392  |  | 6   | %
|                                           |  |                             |        |  |     |   |      |   |        |  |     |  



|(1) | Gross profit margin percentages are based on the related sales of each category.
|--- | --------------------------------------------------------------------------------



|(2) | Income tax percentage is computed based on the relationship of income taxes to pre-tax income.
|--- | ----------------------------------------------------------------------------------------------

Comparison of Three Months Ended March 31, 2010 to 2009

Consolidated revenues for the three months ended March 31, 2010 increased 20% over the prior year quarter. Revenues in the IVD
urinalysis segment increased 24% to $22.3 million in the first quarter of 2010 from $18.0 million in the prior year quarter. Sales of IVD instruments increased 45% to $7.9 million in the first quarter of 2010 from $5.5 million in the prior year
quarter. The increase in IVD instrument sales is primarily driven by strong international sales of both stand-alone Velocity units and iRICELL systems combined with a modest increase in domestic hospital spending for urinalysis systems as we have
experienced a gradual improvement in the global capital equipment environment.

Revenues from IVD consumables and service
increased 15% to a record $14.4 million in the first quarter of 2010 as compared to $12.5 million in the prior year quarter. The increase in both consumables and service revenue was driven primarily due to the larger installed base of instruments
both domestically and internationally. In particular, the increase in consumables reflects the increased sales of iChem Velocity strips as a result of the higher utilization and increased placements of our iChem VELOCITY analyzer in the
international market. Revenues from sample processing instruments and supplies increased 3% to $3.7 million in the first quarter of 2010 as compared to $3.6 million in the prior year quarter. The increase was primarily attributable to increases in
consumables and service revenue within the sample processing segment. Total international revenue represented 36% of the 2010 consolidated first quarter revenue versus 32% in the same period a year ago.



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Overall gross profit margin was 51% during the first quarter of 2010 compared to 54% in the
prior year quarter. The decrease was due to a decrease in instruments and consumables margins, partially offset by an increase in gross margin for service and sample processing. The gross profit margin of our IVD instruments was 36% and 42% during
the first quarter of 2010 and 2009, respectively. The decrease in instrument margins is due to a greater proportion of our sales being made internationally through distributors, which carry lower margins, as well as an increase in iChem Velocity
sales in comparison to the same period last year. At this stage of the products introduction, our iChem Velocity margins are lower than the margins for our more mature iQ analyzers. We expect our iChem Velocity margins will improve as we
attain higher manufacturing volumes including the expected introduction of the iChem VELOCITY in the U.S. Our IVD instruments margins also were adversely impacted by approximately $197,000 relating to inventory revaluation. The lower inventory
valuation should result in lower material costs per instrument sold in future periods.

The gross margin of our IVD
consumables and services was 59% and 61% for the first quarter of 2010 and 2009, respectively. Consumables margins were lower during the first three months of 2010 as the proportion of lower-margin iChem Velocity strips versus other more mature
consumables increased in comparison to the same period last year. Gross profit margin for our sample processing segment increased to 54% during the first three months of 2010 from 49% during the first three months of 2009, due primarily to increased
revenue from higher margin consumables and service contracts.

Marketing and selling expenses totaled $4.4 million and $3.9
million for the first quarter of 2010 and 2009, respectively, but decreased to 17% of revenues during the first quarter of 2010 as compared to 18% of revenues during the first quarter of 2009. The expense increase was due to additional personnel and
related costs of $435,000, higher commissions and GPO fees of $65,000, increased travel and entertainment expenses of $60,000, higher outside professional services of $54,000, as well as $48,000 of other costs, offset by a decrease in tradeshow and
meeting costs of $119,000. The increase in personnel and related costs is primarily the result of the initiation of direct sales in the United Kingdom and Germany in order to support the long-term strategy of our business. We expect to continue to
invest in these areas to strengthen our global presence and support for the anticipated launches of our extensive product pipeline.

General and administrative expenses increased to $3.7 million and $3.1 million for the first quarter of 2010 and 2009, respectively, but
decreased to 14% of revenues in the first quarter of 2010 as compared to 15% of revenues during the first quarter of 2009. This expense increase was due to an increase in personnel and related cost of $358,000, recruiting expense of $90,000 and
other expenses of $142,000.

Research and development expenses increased to $3.7 million, an increase to 14% of revenues in
the first quarter of 2010 as compared to $2.8 million, or 13% of revenues, in the first quarter of 2009. The increase was primarily attributable to $290,000 in clinical product development, research materials and consulting, and an increase in
personnel and related costs of $393,000. We continue to invest heavily in research and development of our diagnostics product pipeline, including our NADiA platform and the simultaneous development of our 3GEMS urinalysis and hematology next
generation platforms.

Interest income increased during the first quarter of 2010 to $237,000 from $203,000 during the first
quarter of 2009, due to higher cash balances.



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Income tax expense during the first quarter of 2010 amounted to 34% of pre-tax income as
compared to 32% during the prior year period due to the expiration of the federal research and development tax credit.

Liquidity and
Capital Resources

Our primary source of liquidity is cash from operations, which depends heavily on sales of our IVD
instruments, consumables and service, as well as sales of sample processing instruments and supplies. At March 31, 2010, our cash and cash equivalents amounted to $36.5 million compared to $34.3 million at December 31, 2009.

Adverse global macro economic forces have been impacting our selling markets and the credit markets of our customers and distributors.
Although we have experienced a recovery in capital equipment sales, we continue to face the following challenges: deferrals of purchases due to decreases in capital budgets of our customers, delays in the purchasing cycle due to greater scrutiny of
deals and increased internal competition for limited capital dollars, and an increase in requests for quotes for operating leases. The aforementioned factors may lead to a decrease in revenue, an increase of deferred revenue, and / or could lead to
installment cash collections that would affect our liquidity and capital resources.

Operating Cash Flows. Cash
provided by operations for the three months ended March 31, 2010 modestly decreased to $3.7 million compared to cash provided by operations of $4.1 million during the prior year three month period. We experienced a $4.3 million increase in
accounts receivable and a $1.9 million decrease in cash from prepaid expenses and other current assets in the three months ended March 31, 2010 as compared to the prior year three months ended March 31, 2009. During the 2009 period, we
benefited from a nonrecurring $1.5 million payment from IDEXX Labs, Inc. under our December 2008 manufacturing, supply and transition agreement. As of March 31, 2010, the number of days sales in accounts receivable decreased to 65 days compared
to 74 days for the prior year first quarter. The number of days sales in accounts receivable varies and may increase with extended payment terms to our international distributors and end users.

Our cash flow has been favorably affected by tax credit carry forwards. As of December 31, 2009, we had federal and state tax carry
forwards of approximately $2.2 million and $3.1 million, respectively. We continue to realize tax deductions from the exercise of certain stock options. During the year ended December 31, 2009, we realized tax deductions of approximately
$707,000 relating to this item. During the three months ended March 31, 2010, we paid no federal taxes and state taxes totaling $197,000.

Investing Activities. Cash used by investing activities totaled $1.0 million during the first three months of 2010, a $2.3 million
increase over the first quarter of 2009, due primarily to an increase in purchases of property and equipment of $152,000 in the first three months of 2010 and the favorable impact of the sale of short-term marketable securities totaling $2.2 million
in the first three months of 2009.

Financing Activities. Cash used in financing activities totaled $93,000 during the
first three months of 2010, a $2.7 million decrease over the first three months of the prior year primarily as a result of the reduction in our repurchase of common stock, which amounted to $2.4 million during the first three months of 2009, and an
increase in tax deduction benefits from the exercise of stock options of $274,000 during the first three months of 2010 compared to the prior year three month period.



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We currently have a credit facility with a commercial bank consisting of a $6.5 million
revolving line of credit for working capital and a $10.0 million line of credit for acquisitions and product opportunities. The credit facility has variable interest rates, which will change from time to time based on changes to either the LIBOR
rate or the lenders prime rate. As of March 31, 2010, there were no borrowings under the credit facility. We are subject to certain financial and non-financial covenants under the credit facility with the bank and as of March 31,
2010, we were in compliance with these covenants.

In 2008, our board of directors authorized two stock repurchase plans which
resulted in our purchase of an aggregate of 983,579 shares of our common stock for approximately $11.9 million during 2008, and an additional 250,800 shares of our common stock approximately $2.5 million during 2009.

We believe that our current cash on hand, together with cash generated from operations and cash available under the credit facility with
the bank will be sufficient to fund normal operations for the foreseeable future. However, additional funding may be required to fund expansion of our business. There is no assurance that such funding will be available on terms acceptable to us.

Off-Balance Sheet Arrangements

At March 31, 2010 and 2009, we did not have any relationships with unconsolidated entities or financial partnerships, such as
entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. As such, we are not
exposed to any financing, liquidity, market or credit risk that could arise if we had engaged in such relationships.

Recent Accounting
Pronouncements

In February 2010, the FASB issued Accounting Standards Update (ASU) 2010-09, Subsequent
Events  Amendments to Certain Recognition and Disclosure Requirements,which makes a number of changes to the existing requirements of ASC Topic 855 including the requirement that SEC filers evaluate subsequent events through the date
financial statements are issued, but are not required to disclose the date through which subsequent events have been evaluated. ASU 2010-09 was effective beginning February 24, 2010. The adoption of ASU 2010-09 did not have a material impact on
our consolidated financial statements.

In October 2009, the FASB issued ASU 2009-14, Certain Revenue Arrangements That
Include Software Elements, now codified under FASB ASC Topic 985, Software. ASU 2009-14, removes tangible products from the scope of software revenue guidance and provides guidance on determining whether software deliverables in an
arrangement that includes a tangible product are covered by the scope of the software revenue guidance. ASU 2009-14 is to be applied on a prospective basis for revenue arrangements entered into or materially modified in fiscal years beginning on or
after June 15, 2010, with early adoption permitted. We are currently evaluating both the timing and the impact of the adoption of the ASU on our consolidated financial statements.

In October 2009, the FASB issued ASU 2009-13, Multiple-Deliverable Revenue Arrangements, which amends ASC Topic 605, Revenue
Recognition, to require companies to allocate revenue in multiple-element arrangements based on an elements estimated selling price if vendor-specific or other third-party evidence of value is not available. ASU 2009-13 is effective
beginning June 15, 2010. Earlier application is permitted. We are currently evaluating both the timing and the impact of the adoption of the ASU on our consolidated financial statements.



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|Item 3. | Quantitative and Qualitative Disclosures About Market Risk
|------- | ----------------------------------------------------------

Market Risk

Our business
is exposed to various market risks, including changes in interest rates and foreign currency exchange rates. Market risk is the potential loss arising from adverse changes in market rates and prices, such as interest rates and foreign currency
exchange rates. We do not invest in derivatives, foreign currency forward contracts or other financial instruments for trading or speculative purposes. We had no debt at March 31, 2010, thus were not subject to market risk for changes in
interest rates on debt obligations. We are subject to market risk for changes in interest rates on our short-term investment portfolio. We invest our excess cash in certificates of deposit and, on occasion, other short-term investments, and the
market value of these investments fluctuates based on changes in interest rates.

Foreign Currencies

We conduct business in certain foreign markets, primarily in the European Union and Asia. Our primary exposure to foreign currency risk
relates to investments in foreign subsidiaries that transact business in a functional currency other than the U.S. Dollar, primarily the Euro and British Pound. We are subject to certain foreign currency risks in the importation of goods from
Japan and as a result of commercial operations in Europe and Asia. Our purchases from a major Japanese IVD supplier are denominated in Japanese Yen. These components represent a significant portion of our material costs. All of our sales are
denominated in U.S. Dollars with the exception of France, Germany, United Kingdom and Ireland, where sales are denominated in Euros and British Pound. Fluctuations in the U.S. Dollar exchange rate for Japanese Yen, Euro and British Pound could
result in increased costs for our key components and increased costs for commercial operations in Europe.



|Item 4. | Controls and Procedures
|------- | -----------------------

Evaluation of
Disclosure Controls and Procedures

We maintain disclosure controls and procedures, as defined by paragraph (e) of
Rules 13a-15(f) or 15d-15(f) under the Securities and Exchange Act of 1934, as amended, designed to ensure that we are able to collect the information we are required to disclose in the reports we file with the SEC and to approve, summarize and
disclose this information within the time periods specified in the rules of the SEC. Our Chief Executive Officer and Chief Financial Officer are responsible for establishing and maintaining these procedures, and, as required by the rules of the SEC,
evaluate their effectiveness. Our Chief Executive Officer and Chief Financial Officer evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2010, the end of the period covered by this report, and based upon
that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Changes in Internal Controls over Financial Reporting

There was no change in our internal control over financial reporting during the quarter ended March 31, 2010 that materially
affected, or is reasonable likely to materially affect, our internal control over financial reporting.



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PART II: OTHER INFORMATION



|Item 1A. | Risk Factors
|-------- | ------------

This
Quarterly Report on Form 10-Q contains forward-looking statements, which are subject to a variety of risks and uncertainties. Other actual results could differ materially from those anticipated in those forward-looking statements as a result of
various factors, including those set forth in the risk factors relating to our business and common stock contained in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2009. There have been no material changes to
such risk factors during the three months ended March 31, 2010.



|Item 6. | Exhibits
|------- | --------



|              |  |                                                                                                     |  |                  
|------------- |  | --------------------------------------------------------------------------------------------------- |  | -----------------
|ExhibitNumber |  | Description                                                                                         |  | ReferenceDocument
|3.1           |  | Amended and Restated Bylaws                                                                         |  | (1)              
|              |  |                                                                                                    
|3.2           |  | Amendment to Amended and Restated Bylaws of IRIS International, Inc., dated as of July 12, 2007     |  | (2)              
|              |  |                                                                                                    
|3.3           |  | Amendment to Amended and Restated Bylaws of IRIS International, Inc., dated as of January 13, 2010. |  | (3)              
|              |  |                                                                                                    
|31.1          |  | Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by Chief Executive Officer  |  | *                
|              |  |                                                                                                    
|31.2          |  | Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by Chief Financial Officer  |  | *                
|              |  |                                                                                                    
|32.1          |  | Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by Chief Executive Officer  |  | *                
|              |  |                                                                                                    
|32.2          |  | Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by Chief Financial Officer  |  | *                



|* | Filed herewith
|- | --------------

|(1) | Incorporated by reference to Exhibit 3.2 to Annual Report on Form 10-K, filed March 26, 2004.
|--- | ---------------------------------------------------------------------------------------------

|(2) | Incorporated by reference to Exhibit 3.2 to Current Report on Form 8-K, filed July 18, 2007.
|--- | --------------------------------------------------------------------------------------------

|(3) | Incorporated by reference to Exhibit 3.3 to Current Report on Form 8-K, filed January 20, 2010.
|--- | -----------------------------------------------------------------------------------------------



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.



|                  |  |  |  |                          |  |                                                               
|----------------- |  |  |  | ------------------------ |  | --------------------------------------------------------------
|Date: May 7, 2010 |  |  |  | IRIS INTERNATIONAL, INC.
|                  |  |  | 
|                  |  |  |  | By:                      |  | /s/ César M. García                                           
|                  |  |  |  |                          |  | César M. García                                               
|                  |  |  |  |                          |  | Chairman, President and Chief Executive Officer               
|                  |  |  | 
|                  |  |  |  | By:                      |  | /s/ Peter L. Donato                                           
|                  |  |  |  |                          |  | Peter L. Donato                                               
|                  |  |  |  |                          |  | Chief Financial Officer                                       
|                  |  |  |  |                          |  | (Principal Financial Officer and Principal Accounting Officer)



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