21 CFR § 660.26
Specificity tests and avidity tests
June 25, 2020
Specificity and avidity tests shall be performed using test procedures approved by the Director, Center for Biologics Evaluation and Research.
[53 FR 12764, Apr. 19, 1988, as amended at 67 FR 9587, Mar. 4, 2002; 70 FR 14985, Mar. 24, 2005]
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