EXHIBIT 23



                  CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation of our
report,  dated March 19, 1999,  on the  financial  statements  of Kyto  Meridien
Diagnostics,  L.L.C.  as of and for the year ended December 31, 1998 included in
this  Form 8-K of DIANON  Systems,  Inc.  It  should  be noted  that we have not
audited any financial statements of the company subsequent to
 December 31, 1998 or performed any audit  procedures  subsequent to the date of
our report.



                                                           ARTHUR ANDERSEN LLP




Stamford, Connecticut
May 4, 1999