Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Colorimetry (C) (3) Enzyme-Linked Immunosorbent Assay (ELISA) (4) Enzyme Immunoassay (EIA) (6) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (8) Headspace Gas Chromatography (GC) (10) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (12) (-) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (1) Sample Type Blood (1) Fluid (2) Serum or Plasma (1) (-) Tissue (2) (-) Urine (2) Test Area Test Category Test Sub-Category Test Test Name 5101U Gamma-Hydroxybutyric Acid Confirmation, Urine 8052TI Postmortem, Expanded, Tissue (Forensic) 8052U Postmortem, Expanded, Urine (Forensic) 8092TI Postmortem, Prescription Drugs Screen, Tissue (Forensic)