EXHIBIT 21
                      ADAC LABORATORIES AND SUBSIDIARIES

                          SUBSIDIARIES OF REGISTRANT

                                                  COUNTRY
                                                     OF
NAME                                           INCORPORATION
- ----                                           -------------            

ADAC do Brasil                                 Brazil                
                                                                     
ADAC Laboratories Europe, B.V.                 The Netherlands       
                                                                     
ADAC Laboratories, SARL (1)                    France                
                                                                     
ADAC Laboratories, GmbH (1)                    Germany               
                                                                     
ADAC Laboratories, A/S (1)                     Denmark               
                                                                     
ADAC Laboratories, Canada Limited              Canada                
                                                                     
ADAC Laboratories, S.R.L. (1)                  Italy                 
                                                                     
ADAC Laboratories, Ltd. (1)                    The United Kingdom    
                                                                     
ADAC Laboratories Pacific, Inc.                California, U.S.      
                                                                     
ADAC Foreign Sales Corporation, Inc.           Virgin Islands, U.S.  
                                                                     
ADAC Research and Manufacturing, Inc.          California, U.S.      
                                                                     
JD Technical Services, Inc.                    Delaware, U.S.         

Community Health Computing Corporation         Delaware, U.S.

ADAC HealthCare Information Systems, Inc. (2)  Texas, U.S.

ADAC Radiology Services, Inc.                  Delaware, U.S.

ADAC Healthcare Partners, Inc.                 Delaware, U.S.

The Company owns 100% of each of the above subsidiaries except as set forth in
the note below.

(1) ADAC Laboratories, B.V., owns 100% of this subsidiary.
(2) Community Health Computing Corporation owns 100% of this subsidiary.