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) (2) Enzyme-Linked Immunosorbent Assay (ELISA) (20) Enzyme Immunoassay (EIA) (5) Gas Chromatography (GC) (15) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (4) Gas Chromatography/Mass Spectrometry (GC/MS) (7) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (155) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Immunoassay (IA) (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) Biomarkers (7) Dopamine Precursor (1) Drugs of Abuse (2) Psychoactives (2) Volatiles (2) Test Sub-Category Other (1) Test Test Name 0213SP Allopurinol and Metabolite, Serum/Plasma