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) (8) Gas Chromatography (GC) (3) Hematofluorometry (H) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (24) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (78) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (4) Ion Specific Electrode (ISE) (4) Sample Type Serum or Plasma (1) Test Area Therapeutics (1) Test Category Antiarrhythmics (3) Antipsychotics (3) Antithyroids (2) (-) Dopamine Precursor (1) Test Sub-Category Parkinsons (1) Test Test Name 2504SP Levodopa, Serum/Plasma