EXHIBIT 99.2

                            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 Annual Report of Advanced Magnetics, Inc.
(the "Company") on Form 10-K for the period ending September 30, 2002 as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), I, James A. Matheson, Vice President of Finance 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/ James A. Matheson
                                       -------------------------------
                                       James A. Matheson
                                       Vice President of Finance
                                       December 12, 2002