Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (2) (-) Serum or Plasma (4) (-) Urine (1) Test Area Drugs of Abuse (2) Postmortem (3) (-) Therapeutics (5) Test Category Antiparkinsons (4) Dopamine Precursor (1) Test Sub-Category Anticholinergics (2) Dopamine Antagonists (1) Other (1) Parkinsons (1) Your search has returned no tests.