U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 28, 2025

All TitlesTitle 21Chapter IPart 660Subpart 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.
© 2016 GovRegs | About | Disclaimer | Privacy