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) (1) (-) Enzymatic Assay (EZA) (2) Enzyme-Linked Immunosorbent Assay (ELISA) (8) (-) Enzyme Immunoassay (EIA) (1) Gas Chromatography (GC) (12) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (39) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (1) Serum or Plasma (2) Urine (3) Test Area Exposure (3) Therapeutics (3) Test Category Analgesics (1) Antacids (2) Other (3) Test Sub-Category Opiates/Opioids (1) Other (3) Proton-Pump Inhibitors (2) Your search has returned no tests.