Regulations last checked for updates: Feb 11, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026
§ 862.3680 - Primidone test system.

(a) Identification. A primidone test system is a device intended to measure primidone, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of primidone overdose and in monitoring levels of primidone to ensure appropriate therapy.

(b) Classification. Class II.

authority: 21 U.S.C. 351,360,360c,360e,360j,360
source: 52 FR 16122, May 1, 1987, unless otherwise noted.
cite as: 21 CFR 862.3680