<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS RESTATED SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
AMENDED FINANCIAL STATEMENTS OF NATIONAL DIAGNOSTICS, INC. FOR THE THREE MONTHS 
ENDED MARCH 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH 
FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          28,107
<SECURITIES>                                 2,000,000
<RECEIVABLES>                                3,211,948
<ALLOWANCES>                                   601,350
<INVENTORY>                                          0
<CURRENT-ASSETS>                             2,837,437
<PP&E>                                       9,974,924
<DEPRECIATION>                               4,905,968
<TOTAL-ASSETS>                              10,394,814
<CURRENT-LIABILITIES>                        8,604,298
<BONDS>                                        753,756
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                  1,475,260
<COMMON>                                         1,936
<OTHER-SE>                                    (440,436)
<TOTAL-LIABILITY-AND-EQUITY>                10,394,814
<SALES>                                              0
<TOTAL-REVENUES>                             2,797,303
<CGS>                                                0
<TOTAL-COSTS>                                1,231,119
<OTHER-EXPENSES>                             1,315,506
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             155,540
<INCOME-PRETAX>                                 95,138
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    95,138
<EPS-PRIMARY>                                    (7.46)
<EPS-DILUTED>                                        0