US lawFederal (United States)RegulationsTitle 21 CFR — Food and DrugsChapter I — FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICESPart 640 — ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTSSubpart B — Red Blood Cells640.1021 C.F.R. § 640.10Red Blood Cells.Last amended: 2016Year: 2026Length: 41 wordsOfficial source Cite as 21 C.F.R. § 640.10 (2026)The proper name of this product shall be Red Blood Cells. The product is defined as red blood cells remaining after separating plasma from human blood. [38 FR 32089, Nov. 20, 1973, as amended at 50 FR 4138, Jan. 29, 1985]Next21 C.F.R. § 640.11