21 CFR 864.7425
§ 864.7425 Carboxyhemoglobin assay.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 864.7425, § 864.7425 Carboxyhemoglobin assay, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/89377
- Permanent ID
ys:prov:89377@1- SHA-256
0c39c6631a740cad59128f33a833d4f737307e199afa7f8989835e2f03d44822
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) Identification. A carboxyhemoglobin assay is a device used to determine the carboxyhemoglobin (the compound formed when hemoglobin is exposed to carbon monoxide) content of human blood as an aid in the diagnosis of carbon monoxide poisoning. This measurement may be made using methods such as spectroscopy, colorimetry, spectrophotometry, and gasometry.
(b) Classification. Class II (performance standards).
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.