21 CFR 862.1700
§ 862.1700 Total thyroxine test system.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 862.1700, § 862.1700 Total thyroxine test system, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/89190
- Permanent ID
ys:prov:89190@1- SHA-256
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Full text
(a) Identification. A total thyroxine test system is a device intended to measure total (free and protein bound) thyroxine (thyroid hormone) in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of thyroid diseases.
(b) Classification. Class II (special controls). 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.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.