<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS OF QUIDEL'S FORM 10-Q FOR THE PERIOD ENDED JUNE 30, 2000, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> JUN-30-2000 <CASH> 5,917 <SECURITIES> 0 <RECEIVABLES> 14,157 <ALLOWANCES> 1,435 <INVENTORY> 8,673 <CURRENT-ASSETS> 28,892 <PP&E> 40,447 <DEPRECIATION> 19,289 <TOTAL-ASSETS> 69,859 <CURRENT-LIABILITIES> 10,934 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 25 <OTHER-SE> 47,600 <TOTAL-LIABILITY-AND-EQUITY> 69,859 <SALES> 39,032 <TOTAL-REVENUES> 39,703 <CGS> 19,022 <TOTAL-COSTS> 36,656 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 621 <INCOME-PRETAX> 2,068 <INCOME-TAX> 827 <INCOME-CONTINUING> 1,241 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,241 <EPS-BASIC> .05 <EPS-DILUTED> .05