Regulations last checked for updates: Feb 11, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026
§ 866.5370 - Cohn fraction V immunological test system.

(a) Identification. A Cohn fraction V immunological test system is a device that consists of or measures that fraction of plasma containing predominantly albumin (a plasma protein). This test aids in the diagnosis of diseases where albumin levels may be depressed, e.g., nephrosis (disease of the kidney), proteinuria (protein in the urine), gastroenteropathy (disease of the stomach and small intestine), rheumatoid arthritis, and viral hepatitis.

(b) Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 866.9.

[47 FR 50823, Nov. 9, 1982, as amended at 59 FR 63007, Dec. 7, 1994; 66 FR 38793, July 25, 2001]
authority: 21 U.S.C. 351,360,360c,360e,360j,360
cite as: 21 CFR 866.5370