Form: 10-K405

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

March 31, 1997

Documents

COMPUTATION OF EARNINGS PER SHARE

Published on March 31, 1997



Exhibit 11



IDEXX LABORATORIES, INC.
SUPPLEMENTAL CALCULATION OF
SHARES USED IN DETERMINING
NET INCOME PER SHARE (1)




Years Ended December 31,

1994 1995 1996
---------- ---------- ----------

Weighted average common stock
outstanding during the period 31,382,986 32,945,847 37,082,497

Weighted average common stock
equivalents 2,141,912 2,416,256 2,436,325
---------- ---------- ----------

33,524,898 35,362,103 39,518,822



(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.