CFR›Title 21›Chapter I›Part 640›21 CFR Part 640 Subpart F Citation21 CFR Part 640 Subpart FContainsSections § 640.50–§ 640.56CorpusDaily eCFRDisplayed edition2026-08-04Last updated2026-08-04 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. Authority21 U.S.C. 321, 351, 352, 353, 355, 360, 371; 42 U.S.C. 216, 262, 263, 263a, 264.Source38 FR 32089, Nov. 20, 1973, unless otherwise noted.