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EXHIBIT 23
Consent of Independent Certified Public Accountants
We have issued our report dated June 23, 1999 accompanying the financial
statements and schedule included in the Annual Report of Summa Rx Laboratories,
Inc. on Form 10-K for the year ended April 30, 1999. We hereby consent to the
incorporated by reference of said report in the Registration Statement of Summa
Rx Laboratories, Inc. on Form S-8 (File No. 33- 9475 effective October 9, 1996).
GRANT THORNTON LLP
Dallas, Texas
August 12, 1999
