§ 660.4 Potency test.
Current through Sep 8, 2026 · Read all of Part 660
To be satisfactory for release, each filling of Antibody to Hepatitis B Surface Antigen shall be tested against the Reference Hepatitis B Surface Antigen Panel and shall be sufficiently potent to detect the antigen in the appropriate sera of the reference panel by all test methods recommended by the manufacturer in the package insert.
[40 FR 29711, July 15, 1975]