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 Annual Report of Life Sciences Research, Inc.
("LSR") on Form 10-K for the period ended December 31, 2006, as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Richard
Michaelson, Chief Financial Officer of LSR 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 LSR.



Date:    March 14, 2007                       /s/    Richard Michaelson

                                                     --------------------
                                                     Richard Michaelson
                                                     Chief Financial Officer