{"data":{"id":"us/21-cfr-864.7140","jurisdiction":"us","citation":"21 CFR 864.7140","heading":"Activated whole blood clotting time tests.","body":"(a) Identification. An activated whole blood clotting time tests is a device, used to monitor heparin therapy for the treatment of venous thrombosis or pulmonary embolism by measuring the coagulation time of whole blood.\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 864—HEMATOLOGY AND PATHOLOGY DEVICES","Subpart H—Hematology Kits and Packages"],"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":"8668876fda481914a6c640f5a9d96dfa025a4eb251d60f4149613545869def50","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-864.7100","next":"us/21-cfr-864.7250"},"notice":"GroundRules: Original legal text. Not legal advice."}