EXHIBIT 99.1

CERTIFICATION PURSUANT TO 18 U.S.C.

SECTION 1350

AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

          In connection with the Quarterly Report of IDEXX Laboratories, Inc. (the "Company") on Form 10-Q for the period ended June 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.	The Report fully complies with the requirements of Section 13(a) or 15(d) of the
	Securities Exchange Act of 1934; and
2.	The information contained in the Report fairly presents, in all material respects,
	the financial condition and results of operations of the Company.

/s/ Jonathan W. Ayers    

Jonathan W. Ayers

President and Chief Executive Officer

August 14, 2002

/s/ Merilee Raines      

Merilee Raines

Vice President, Finance and Treasurer

(Principal Financial Officer)

August 14, 2002