EXHIBIT 99.1

                             Officers Certification

        Each of the undersigned hereby certifies in his capacity as an officer
of Diagnostic Products Corporation ("DPC") that the Quarterly Report of DPC on
Form 10-Q for the quarter ended September 30, 2002, fully complies with the
requirements of Section 13(a) of the Securities Exchange Act of 1934 and that
the information contained in such report fairly presents, in all material
respects, the financial condition of DPC at the end of such period and the
results of its operations for such period.

Dated November 13, 2002               /S/ Michael Ziering
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                                      Michael Ziering, Chief Executive Officer


                                      /S/ James L. Brill
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                                      James L. Brill, Chief Financial Officer