<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE IDEXX
LABORATORIES, INC. CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR THE 12 MONTHS
ENDED DECEMBER 31, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000874716
<NAME> IDEXX LABORATORIES, INC.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          58,576
<SECURITIES>                                    46,835
<RECEIVABLES>                                   63,181
<ALLOWANCES>                                     4,828
<INVENTORY>                                     47,488
<CURRENT-ASSETS>                               232,415
<PP&E>                                          88,658
<DEPRECIATION>                                  49,108
<TOTAL-ASSETS>                                 360,158
<CURRENT-LIABILITIES>                           75,524
<BONDS>                                            293
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         3,958
<OTHER-SE>                                     280,383
<TOTAL-LIABILITY-AND-EQUITY>                   360,158
<SALES>                                        283,573
<TOTAL-REVENUES>                               356,214
<CGS>                                          123,364
<TOTAL-COSTS>                                  182,117
<OTHER-EXPENSES>                               127,010
<LOSS-PROVISION>                                   270
<INTEREST-EXPENSE>                                 476
<INCOME-PRETAX>                                 52,545
<INCOME-TAX>                                    19,967
<INCOME-CONTINUING>                             32,578
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    32,578
<EPS-BASIC>                                       0.85
<EPS-DILUTED>                                     0.82