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) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (1) (-) Gas Chromatography (GC) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Sample Type Blood (1) Fluid (1) (-) Serum or Plasma (2) Urine (3) Test Area Diagnostic Aids (1) Therapeutics (1) Test Category Biomarkers (1) Sedative/Hypnotics (1) Test Sub-Category Aromatics (1) (-) Barbiturates (1) Other (1) (-) Small Molecule (1) Test Test Name 0500SP Barbital, Serum/Plasma 0642SP Betahydroxybutyric Acid, Serum/Plasma