{"data":{"id":"us/21-cfr-640.52","jurisdiction":"us","citation":"21 CFR 640.52","heading":"Collection of source material.","body":"(a) Whole blood used as a source of Cryoprecipitated AHF shall be collected as prescribed in § 640.4. Whole blood from which both Platelets and Cryoprecipitated AHF is derived shall be maintained as required under § 640.24 until the platelets are removed.\n(b) If plasmapheresis is used, the procedure for collection shall be as prescribed in § 640.64 (except that paragraph (c)(3) of that section shall not apply), and 640.65.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER F—BIOLOGICS","PART 640—ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTS","Subpart F—Cryoprecipitate"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"3b9a53af495451d96e89dfe185ead39b56f6b253336650fe28e61ec313b7096c","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-640.51","next":"us/21-cfr-640.53"},"notice":"GroundRules: Original legal text. Not legal advice."}