CFR›Title 21›Chapter I›Part 640›Subpart F ContainsSections 640.50–640.56CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart F—Cryoprecipitate Sections 640.50 § 640.50 Cryoprecipitated AHF. 640.51 § 640.51 Eligibility of donors. 640.52 § 640.52 Collection of source material. 640.53 § 640.53 Testing the blood. 640.54 § 640.54 Processing. 640.55 § 640.55 U.S. Standard preparation. 640.56 § 640.56 Quality control test for potency. Previous D Subpart D—Plasma Next G Subpart G—Source Plasma