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Regulations last checked for updates: May 14, 2025
Title 21 - Food and Drugs last revised: May 12, 2025
All Titles
Title 21
Chapter I
Part 660
Subpart E - Subpart E—Hepatitis B Surface Antigen
§ 660.40 - Hepatitis B Surface Antigen.
§ 660.41 - Processing.
§ 660.43 - Potency test.
§ 660.44 - Specificity.
§ 660.45 - Labeling.
§ 660.46 - Samples; protocols; official release.
authority:
21 U.S.C. 321
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42 U.S.C. 216
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262
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