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) (1) 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) (2) Sample Type (-) Blood (2) Fluid (1) Serum or Plasma (4) (-) Tissue (1) (-) Urine (2) Test Area Test Category Test Sub-Category Test Test Name 4680B Trihexyphenidyl, Blood 4680U Trihexyphenidyl, Urine 8092B Postmortem, Prescription Drugs Screen, Blood (Forensic) 8092TI Postmortem, Prescription Drugs Screen, Tissue (Forensic) 8092U Postmortem, Prescription Drugs Screen, Urine (Forensic)