Exhibit 32.1


                            CERTIFICATION PURSUANT TO
                               U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


I, Raymond C. Kubacki, Jr., President and Chief Executive Officer of
Psychemedics Corporation (the "Company"), certify, pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:


     (1)  The Company's Quarterly Report on Form 10-Q for the quarter ended June
          30, 2004, as filed with the Securities and Exchange Commission on or
          about August 16, 2004 (the "Report"), fully complies with the
          requirements of Section 13(a) or 15(d) of the Securities Exchange Act
          of 1934; and

     (2)  The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operation of
          the Company.




Date: August 16, 2004                   By:
                                            ------------------------------------
                                            Raymond C. Kubacki, Jr.
                                            Chairman and Chief Executive Officer





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