Exhibit 32.2

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

In connection with the Quarterly Report of Luminex Corporation (the "Company")
on Form 10-Q for the period ended June 30, 2003, as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), I, Harriss T. Currie,
Acting Chief Financial Officer and Controller of 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 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 operations of the
Company.

/s/ HARRISS T. CURRIE
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Harriss T. Currie
Acting Chief Financial Officer and Controller
August 14, 2003