eCFR.io
Daily eCFR

§ 866.5260 Complement C<sub>3b</sub> inactivator immunological test system.

21 CFR 866.5260

Citation21 CFR 866.5260
CorpusDaily eCFR
Displayed edition2026-04-27
Last updated2026-04-27

§ 866.5260 Complement C3b inactivator immunological test system.

(a) Identification. A complement C3b inactivator immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the complement C3b inactivator (a plasma protein) in serum. Complement is a group of serum proteins that destroy infectious agents. Measurement of complement C3b inactivator aids in the diagnosis of inherited antibody dysfunction.

(b) Classification. Class II (performance standards).