{"data":{"id":"us/21-cfr-640.23","jurisdiction":"us","citation":"21 CFR 640.23","heading":"Testing the blood.","body":"(a) Blood from which plasma is separated for the preparation of Platelets shall be tested as prescribed in § 610.40 of this chapter and § 640.5 (b) and (c).\n(b) The tests shall be performed on a sample of blood collected at the time of collecting the source blood, and such sample container shall be labeled with the donor's number before the container is filled.","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 C—Platelets"],"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":"d3e338ef84f19424a6de3d4247e25679fe5f1d5f5118b72af6d24018e3a2eda6","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-640.22","next":"us/21-cfr-640.24"},"notice":"GroundRules: Original legal text. Not legal advice."}