POWER OF ATTORNEY
                   For Executing Form ID and Forms 3, 4 and 5

  Know all by these presents, that the undersigned hereby constitutes and
  appoints each of Jacqueline Studer, Lily J. Lu, Beth P. Hanson, or any of them
  signing singly, and with full power of substitution, the undersigned's true
  and lawful attorney-in-fact to:

           (1)     prepare, execute in the undersigned's name and on the
                   undersigned's behalf, and submit to the U.S. Securities and
                   Exchange Commission (the "SEC") a Form ID, including
                   amendments thereto, and any other documents necessary or
                   appropriate to obtain codes and passwords enabling the
                   undersigned to make electronic filings with the SEC of
                   reports required by Section 16(a) of the Securities Exchange
                   Act of 1934 or any rule or regulation of the SEC;

           (2)     execute for and on behalf of the undersigned, in the
                   undersigned's capacity as an officer of IDEXX Laboratories,
                   Inc. (the "Company"), Forms 3, 4, and 5 in accordance with
                   Section 16(a) of the Securities Exchange Act of 1934 and the
                   rules thereunder;

           (3)     do and perform any and all acts for and on behalf of the
                   undersigned which may be necessary or desirable to complete
                   and execute any such Form 3, 4, or 5, complete and execute
                   any amendment or amendments thereto, and timely file such
                   form with the SEC and any stock exchange or similar
                   authority; and

           (4)     take any other action of any type whatsoever in connection
                   with the foregoing which, in the opinion of such
                   attorney-in-fact, may be of benefit to, in the best interest
                   of, or legally required by, the undersigned, it being
                   understood that the documents executed by such
                   attorney-in-fact on behalf of the undersigned pursuant to
                   this Power of Attorney shall be in such form and shall
                   contain such terms and conditions as such attorney-in-fact
                   may approve in such attorney-in-fact's discretion.

  The undersigned hereby grants to each such attorney-in-fact full power and
  authority to do and perform any and every act and thing whatsoever requisite,
  necessary, or proper to be done in the exercise of any of the rights and
  powers herein granted, as fully to all intents and purposes as the undersigned
  might or could do if personally present, with full power of substitution or
  revocation, hereby ratifying and confirming all that such attorney-in-fact, or
  such attorney-in-fact's substitute or substitutes, shall lawfully do or cause
  to be done by virtue of this power of attorney and the rights and powers
  herein granted. The undersigned acknowledges that the foregoing
  attorneys-in-fact, in serving in such capacity at the request of the
  undersigned, are not assuming, nor is the Company assuming, any of the
  undersigned's responsibilities to comply with Section 16 of the Securities
  Exchange Act of 1934.

  This Power of Attorney shall remain in full force and effect until the
  undersigned is no longer required to file Forms 3, 4, and 5 with respect to
  the undersigned's holdings of and transactions in securities issued by the
  Company, unless earlier revoked by the undersigned in a signed writing
  delivered to the foregoing attorneys-in-fact.

  IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
  executed as of this 13 day of October, 2014.

                                       /s/ M. Anne Szostak
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                                       Signature

                                       M. Anne Szostak
                                       -----------------------------------------
                                       Printed Name