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) (2) Enzyme-Linked Immunosorbent Assay (ELISA) (3) Enzyme Immunoassay (EIA) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (2) (-) Fluid (1) Serum or Plasma (4) (-) Tissue (1) (-) Urine (2) Test Area Test Category Test Sub-Category Test Test Name 4680U Trihexyphenidyl, Urine 8092FL Postmortem, Prescription Drugs Screen, Fluid (Forensic) 8092TI Postmortem, Prescription Drugs Screen, Tissue (Forensic) 8092U Postmortem, Prescription Drugs Screen, Urine (Forensic)