Exhibit 23.01

Consent  of  Independent  Auditors


We  consent  to  the  incorporation by reference in the Registration Statement
(Form  S-8)  pertaining  to  the  Bioanalytical  Systems,  Inc.  1997 Employee
Incentive  Stock Option Plan of our report dated  October 31, 1997 (except for
Note  10,  as  to  which  the  date  is November 21, 1997) with respect to the
consolidated  financial  statements of Bioanalytical Systems, Inc. included in
its Registration Statement on Form S-1 (No. 333-36429) dated November 24, 1997
filed  with  the  Securities  and  Exchange  Commission.


/s/  Ernst  &  Young  LLP








Indianapolis,  Indiana
June  1,  1998