Form: 10-K405

Annual report [Sections 13 and 15(d), S-K Item 405]

March 27, 1998

Documents

COMPUTATIONS OF PER SHARE EARNINGS

Published on March 27, 1998


IDEXX LABORATORIES, INC. EXHIBIT 11

SUPPLEMENTAL CALCULATION OF

SHARES USED IN DETERMINING

NET INCOME PER SHARE (1)



Years Ended December 31,

1995 1996 1997
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Weighted average common stock
outstanding during the period 32,945,847 37,082,497 37,974,188

Weighted average common stock
equivalents 2,416,256 2,436,325 1,446,947
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35,362,103 39,518,822 39,421,135



(1) Fully diluted net income per share has not been separately presented, as
the amounts would not be materially different from primary net income per
share.