<ARTICLE>                     5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
Bioanalytical  Systems, Inc. consolidated  financial statements contained in the
Company's  quarterly  report on Form 10-Q and is  qualified  in its  entirety by
reference to such financial statements.

<CIK>                         0000720154
<NAME>                        Bioanalytical
<MULTIPLIER>                  1,000


                                                    
<PERIOD-TYPE>                                                3-MOS
<FISCAL-YEAR-END>                                      SEP-30-2001
<PERIOD-START>                                         OCT-01-2000
<PERIOD-END>                                           DEC-31-2000
<CASH>                                                         391
<SECURITIES>                                                     0
<RECEIVABLES>                                                3,495
<ALLOWANCES>                                                     0
<INVENTORY>                                                  2,337
<CURRENT-ASSETS>                                             7,088
<PP&E>                                                      24,580
<DEPRECIATION>                                               5,960
<TOTAL-ASSETS>                                              26,815
<CURRENT-LIABILITIES>                                        5,633
<BONDS>                                                          0
<PREFERRED-MANDATORY>                                            0
<PREFERRED>                                                      0
<COMMON>                                                     1,011
<OTHER-SE>                                                  15,241
<TOTAL-LIABILITY-AND-EQUITY>                                26,815
<SALES>                                                      2,330
<TOTAL-REVENUES>                                             5,426
<CGS>                                                          763
<TOTAL-COSTS>                                                3,004
<OTHER-EXPENSES>                                             1,931
<LOSS-PROVISION>                                                 0
<INTEREST-EXPENSE>                                            (136)
<INCOME-PRETAX>                                                356
<INCOME-TAX>                                                   161
<INCOME-CONTINUING>                                            195
<DISCONTINUED>                                                   0
<EXTRAORDINARY>                                                  0
<CHANGES>                                                        0
<NET-INCOME>                                                   195
<EPS-BASIC>                                                    .04
<EPS-DILUTED>                                                  .04