CFR›Title 21›Chapter I›Part 640›Subpart L ContainsSection 640.120CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart L—Alternative Procedures Sections 640.120 § 640.120 Alternative procedures. Previous J Subpart J—Immune Globulin (Human) Next M Subpart M—Definitions and Medical Supervision