{"data":{"id":"us/21-cfr-610.10","jurisdiction":"us","citation":"21 CFR 610.10","heading":"Potency.","body":"Tests for potency shall consist of either in vitro or in vivo tests, or both, which have been specifically designed for each product so as to indicate its potency in a manner adequate to satisfy the interpretation of potency given by the definition in § 600.3(s) of this chapter.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER F—BIOLOGICS","PART 610—GENERAL BIOLOGICAL PRODUCTS STANDARDS","Subpart B—General Provisions"],"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":"59f343fe19d693f7a8b9b574d0c81f03fe2005e17bdc9d30c0b035be99a62190","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-610.9","next":"us/21-cfr-610.11-610.11a"},"notice":"GroundRules: Original legal text. Not legal advice."}