21 C.F.R. § 864.7750 Prothrombin time test.
Title 21 - Food and Drugs
(a) Identification. A prothrombin time test is a device used as a general screening procedure for the detection of possible clotting factor deficiencies in the extrinsic coagulation pathway, which involves the reaction between coagulation factors III and VII, and to monitor patients receiving coumarin therapy (the administration of one of the coumarin anticoagulants in the treatment of venous thrombosis or pulmonary embolism). (b) Classification. Class II (performance standards). [45 FR 60626, Sept. 12, 1980]
Title 21: Food and Drugs
PART 864—HEMATOLOGY AND PATHOLOGY DEVICES
Subpart H—Hematology Kits and Packages
§ 864.7750 Prothrombin time test.
