Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (2) (-) Serum or Plasma (4) Urine (1) Test Area Drugs of Abuse (1) Postmortem (2) (-) Therapeutics (4) Test Category Antiparkinsons (3) Dopamine Precursor (1) Test Sub-Category Anticholinergics (1) Dopamine Antagonists (1) Other (1) Parkinsons (1) Your search has returned no tests.