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/Mass Spectrometry (GC/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (8) (-) Fluid (2) Hair (1) Liquid (1) Meconium (1) Plasma (1) Serum or Plasma (8) Tissue (2) Urine (10) Test Area Diagnostic Aids (1) Drugs of Abuse (1) Test Category Biomarkers (1) Sedative/Hypnotics (1) Test Sub-Category Barbiturates (1) Small Molecule (1) Test Test Name 0420FL Betahydroxybutyric Acid, Fluid 8620FL Barbiturates Panel, Fluid