21 C.F.R. § 660.44 Specificity.
Title 21 - Food and Drugs
Each filling of the product shall be specific for Hepatitis B Surface Antigen as determined by specificity tests found acceptable to the Director, Center for Biologics Evaluation and Research. [44 FR 36382, June 22, 1979, as amended at 49 FR 23834, June 8, 1984; 55 FR 11013, Mar. 26, 1990]
Title 21: Food and Drugs
PART 660—ADDITIONAL STANDARDS FOR DIAGNOSTIC SUBSTANCES FOR LABORATORY TESTS
Subpart E—Hepatitis B Surface Antigen
§ 660.44 Specificity.
