1 EXHIBIT 21 SUBSIDIARIES OF THE COMPANY Name Jurisdiction of Incorporation ---- ----------------------------- Access Medical Systems, Inc. Delaware Cardiopet Incorporated Delaware Environetics, Inc. Delaware ETI Corporation Delaware IDEXX Laboratories Foreign Sales Corporation U.S. Virgin Islands IDEXX GmbH Germany IDEXX LABORATORIES PTY. LIMITED Australia IDEXX Laboratories, Limited England and Wales IDEXX Laboratories, KK Japan IDEXX S.A. France IDEXX Laboratories Canada Corporation Canada IDEXX Laboratories B.V. The Netherlands IDEXX Logistique et Scientifique Europe S.A. France IDEXX Management Services Europe S.A. France IDEXX Veterinary Services, Inc. Delaware RADIOPET INCORPORATED Delaware VetLab, Inc. Texas Veterinary Services, Inc. Colorado Ubitech Aktiebolag Sweden