21 CFR 862.3350 - Diphenylhydantoin test system.
(a) Identification. A diphenylhydantoin test system is a device intended to measure diphenylhydantoin, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of diphenylhydantoin overdose and in monitoring levels of diphenylhydantoin to ensure appropriate therapy.
Title 21 published on 2013-04-01
no entries appear in the Federal Register after this date.