Power of Attorney for Karen Peacock

Karen Peacock, a director of IDEXX Laboratories, Inc., has executed a Power of Attorney appointing Sharon E. Underberg, Lily J. Lu, and Brenton N. Speed as her attorneys-in-fact. This authorization allows them to act on her behalf in matters related to SEC filings, including obtaining EDGAR credentials, executing Forms 3, 4, and 5, and managing her EDGAR account. The Power of Attorney remains in effect until Peacock is no longer required to file these forms or until she revokes it in writing. This document ensures compliance with Section 16(a) of the Securities Exchange Act of 1934.