eCFR Reference Browser

---

title: "21 CFR §864.7750"

source: "https://www.ecfr.gov/current/title-21/section-864.7750"

title_number: "21"

volume_number: "8"

chapter_number: "Unknown"

subchapter_code: "H"

subchapter_subject: "MEDICAL DEVICES"

part_code: "864"

part_subject: "HEMATOLOGY AND PATHOLOGY DEVICES"

subpart_code: "H"

subpart_subject: "Hematology Kits and Packages"

section_number: "864.7750"

section_subject: "Prothrombin time test."

cfr_reference: "21 CFR 864.7750"

title_name: "Title 21"

title_subject: "Food and Drugs"

parts_covered: "Parts 800 to 1299"

revised_date: "Revised as of April 1, 2019"

publication_date: "As of April 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

(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).

§864.7750 - Prothrombin time test.