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) (2) Enzyme Immunoassay (EIA) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (4) (-) Fluid (1) Serum or Plasma (5) Tissue (1) (-) Urine (2) Test Area Drugs of Abuse (1) (-) Postmortem (2) (-) Therapeutics (1) Test Category Antiparkinsons (1) Therapeutics (2) Test Sub-Category Anticholinergics (1) Other (2) Your search has returned no tests.