EXHIBIT 11


           MERIDIAN DIAGNOSTICS, INC. AND SUBSIDIARIES 
                                 
            Computation of Earnings Per Common Share 
                  Period Ended December 31, 1995

                        Weighted Avg.                Earnings
                          Number of                     Per
                        Common Shares       Net       Common
                         Outstanding      Income       Share        Use    
                        _____________    ________    _________    ______

QUARTER ENDED 
DECEMBER 31, 1995:

  Shares outstanding 
    October 1, 1995     12,924,814     $   -        $    -      $     -   

  Weighted average 
    shares issued
    during the period
    (1,320,123 shares)     972,952         -             -            -   

  Net Income                  -          629,161         -            -   
                         __________   __________   __________   _________

                         13,897,766      629,161         .045         .05 


  Effect of outstanding 
   stock options which 
   is less than 3% and
   not required to be 
   disclosed in the 
   financial statements
   (804,893 shares)        437,507         -    
                       ___________   ___________   __________
                        14,335,273       629,161         .044
                                                                
                                                

  Effect of convertible 
   debentures              360,295        26,824
                       ___________   ___________   __________
                        14,695,568       655,985         .045
                                                                              
                                                
  Additional effect of 
   stock options 
   at quarter end 
   stock price              39,775 
                       ___________   ___________   __________
                        14,735,343       655,985         .044
                       ___________   ___________   __________
                       ___________   ___________   __________