Exhibit 23.2



                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent  public  accountants,  we hereby consent to the  incorporation by
reference of (i) our report dated February 27, 1997,  incorporated  by reference
in DIANON  Systems,  Inc.'s Form 10-K for the year ended December 31, 1996, into
the previously filed Registration Statements Nos. 33-41226,  33-94176, 33-94178,
33-43673 and 333-18817 and (ii) our report dated March 15, 1996, incorporated by
reference  in DIANON  Systems,  Inc.  Form 10-K for the year ended  December 31,
1995, into the previously filed Registration Statements Nos. 33-41226, 33-94176,
33-94178 and 33-43673.





                               ARTHUR ANDERSEN LLP



Stamford, Connecticut
February 27, 1997