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