Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (2) (-) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (7) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (1) Sample Type Blood (5) Serum or Plasma (4) (-) Urine (2) Test Area Therapeutics (2) Test Category Antiepileptics/Antiseizures (1) Sedative/Hypnotics (1) Test Sub-Category (-) Barbiturates (2) Other (1) Test Test Name 0500U Barbital, Urine 2860U Metharbital and Metabolite, Urine