{"data":{"id":"us/21-cfr-862.1690","jurisdiction":"us","citation":"21 CFR 862.1690","heading":"Thyroid stimulating hormone test system.","body":"(a) Identification. A thyroid stimulating hormone test system is a device intended to measure thyroid stimulating hormone, also known as thyrotrophin and thyrotrophic hormone, in serum and plasma. Measurements of thyroid stimulating hormone produced by the anterior pituitary are used in the diagnosis of thyroid or pituitary disorders.\n(b) Classification. Class II.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 862—CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES","Subpart B—Clinical Chemistry Test Systems"],"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":"877e17341948922b8c26822139d56eccee02612dd4eaf325c4142cb303756f8b","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-862.1685","next":"us/21-cfr-862.1695"},"notice":"GroundRules: Original legal text. Not legal advice."}