[Code of Federal Regulations] [Title 21, Volume 7] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR640.52] [Page 93] TITLE 21--FOOD AND DRUGS DEPARTMENT OF HEALTH AND HUMAN SERVICES--(Continued) PART 640--ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTS--Table of Contents Subpart F--Cryoprecipitate Sec. 640.52 Collection of source material. (a) Whole blood used as a source of Cryoprecipitated AHF shall be collected as prescribed in Sec. 640.4. Whole blood from which both Platelets and Cryoprecipitated AHF is derived shall be maintained as required under Sec. 640.24 until the platelets are removed. (b) If plasmapheresis is used, the procedure for collection shall be as prescribed in Secs. 640.62, 640.64 (except that paragraph (c)(3) of that section shall not apply), and 640.65. [42 FR 21774, Apr. 29, 1977, as amended by 50 FR 4139, Jan. 29, 1985; 64 FR 45373, Aug. 19, 1999]