Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Sample Type Blood (3) Fluid (1) Meconium (1) Serum or Plasma (3) Tissue (1) (-) Urine (2) Test Area Drugs of Abuse (1) Therapeutics (1) Test Category (-) Sedative/Hypnotics (2) Test Sub-Category (-) Barbiturates (2) Test Test Name 8620U Barbiturates Panel, Urine 8633U Phenobarbital, Urine