Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzymatic Assay (EZA) (1) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (4) Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (15) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Fluid (1) (-) Hair (1) (-) Serum or Plasma (2) (-) Tissue (1) Test Area Therapeutics (4) Test Category Analgesics (4) Test Sub-Category Opiates/Opioids (4) Your search has returned no tests.