21 CFR 660.22 - Potency requirements with reference preparations.
(a) Potency requirements. Products for which reference Blood Grouping Reagents are available shall have a potency titer value at least equal to that of the reference preparation.
(b) Reference preparations. Reference Blood Grouping Reagents shall be obtained from the Center for Biologics Evaluation and Research (HFM-407) (see mailing addresses in § 600.2 of this chapter), and shall be used as described in the accompanying package insert for determining the potency of Blood Grouping Reagents.
Title 21 published on 2014-04-01
no entries appear in the Federal Register after this date.