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CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER H—MEDICAL DEVICES (parts 800 to 898) > PART 862—CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES > SUBPART B—Clinical Chemistry Test Systems (§862.1020 to §862.1825) > 862.1685—Thyroxine-binding globulin test system.

CFR

862.1685—Thyroxine-binding globulin test system.

(a) Identification. A thyroxine-binding globulin test system is a device intended to measure thyroxine (thyroid)-binding globulin (TBG), a plasma protein which binds thyroxine, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of thyroid diseases.
(b) Classification. Class II.
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