Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzymatic Assay (EZA) (4) Enzyme-Linked Immunosorbent Assay (ELISA) (5) Enzyme Immunoassay (EIA) (2) (-) Gas Chromatography (GC) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (14) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (11) Sample Type Blood (1) Serum or Plasma (1) Urine (1) Test Area Therapeutics (3) Test Category Sedative/Hypnotics (3) Test Sub-Category Aromatics (2) (-) Barbiturates (3) Other (7) Test Test Name 0500B Barbital, Blood 0500SP Barbital, Serum/Plasma 0500U Barbital, Urine