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) (1) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (8) Enzyme Immunoassay (EIA) (1) Gas Chromatography (GC) (9) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (42) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (3) Fluid (1) Hair (1) Serum or Plasma (3) Tissue (1) Urine (1) Test Area Exposure (2) Therapeutics (8) Test Category Analgesics (8) Other (2) Test Sub-Category Opiates/Opioids (8) Other (2) Your search has returned no tests.