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) (1) Sample Type Serum or Plasma (1) Test Area (-) Therapeutics (1) Test Category Antacids (5) Antiarrhythmics (6) Antidepressants (3) Antigout Agents (1) Antileprosy Agents (2) Antiparkinsons (1) Antipsychotics (4) Antithrombotics (4) Antithyroids (2) Antitussives/Cough Suppressants (3) (-) Dopamine Precursor (1) Test Sub-Category Parkinsons (1) Test Test Name 2504SP Levodopa, Serum/Plasma