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) > 862.1715—Triiodothyronine uptake test system.

862.1715—Triiodothyronine uptake test system.

(a) Identification. A triiodothyronine uptake test system is a device intended to measure the total amount of binding sites available for binding thyroid hormone on the thyroxine-binding proteins, thyroid-binding globulin, thyroxine-binding prealbumin, and albumin of serum and plasma. The device provides an indirect measurement of thyrkoxine levels in serum and plasma. Measurements of triiodothyronine uptake are used in the diagnosis and treatment of thyroid disorders.
(b) Classification. Class II. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9.

Code of Federal Regulations

[52 FR 16122, May 1, 1987, as amended at 64 FR 1124, Jan. 8, 1999]