Exhibit 23.1 - Consent of Independent Auditors
We consent to the incorporation by reference in the Registration Statement
(Form S-8 No. 333-56123) pertaining to the Bioanalytical Systems, Inc. 1997
Employee Incentive Stock Option Plan and in the Registration Statement (Form S-8
No. 333-56127) pertaining to the 1997 Bioanalytical Systems, Inc. Outside
Director Stock Option Plan of our report dated November 3, 2000 with respect to
the consolidated financial statements included in this Annual Report (Form 10-K)
of Bioanalytical Systems, Inc.
/s/ Ernst & Young LLP
Indianapolis, Indiana
December 28, 2000
