{"data":{"id":"us/21-cfr-866.5270","jurisdiction":"us","citation":"21 CFR 866.5270","heading":"C-reactive protein immunological test system.","body":"(a) Identification. A C-reactive protein immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the C-reactive protein in serum and other body fluids. Measurement of C-reactive protein aids in evaluation of the amount of injury to body tissues.\n(b) Classification. Class II (performance standards).","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 866—IMMUNOLOGY AND MICROBIOLOGY DEVICES","Subpart F—Immunological 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":"23cc858a46b394acdee046b70b8b1bdf9daa0927ff3abfc62953e529821bf2cc","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-866.5260","next":"us/21-cfr-866.5320"},"notice":"GroundRules: Original legal text. Not legal advice."}