EXHIBIT 99.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Lyle C. Turner, Chief Executive Officer of Invitrogen Corporation (the
"Registrant"), do hereby certify in accordance with 18 U.S.C. 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, based on my
knowledge:

        (1) the Quarterly Report on Form 10-Q of the Registrant, to which this
        certification is attached as an exhibit (the "Report"), fully complies
        with the requirements of section 13(a) of the Securities Exchange Act of
        1934 (15 U.S.C. 78m); and

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


Dated: November 13, 2002                /s/  Lyle C. Turner
                                        ----------------------------------------
                                        Lyle C. Turner
                                        Chief Executive Officer