WHAT IS PHENOBARBITAL TEST?
A long-acting, schedule IV barbiturate most commonly used for its anticonvulsant effect and occasionally used as a sedative. It is widely distributed throughout the body and metabolized by the liver, and 50% is excreted unchanged in the urine. The half-life is normally 50-120 hours in adults and 40-70 hours in children. Allowance of time for steady-state levels after changes in dosage should be considered, with monitoring of therapeutic blood levels. For rapid detection, the fluorescence polarization assay method can be used.