Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (5) (-) Enzyme Immunoassay (EIA) (1) Gas Chromatography (GC) (8) Gas Chromatography/Mass Spectrometry (GC/MS) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (26) Sample Type Blood (2) Fluid (1) Serum or Plasma (1) Tissue (1) Urine (1) Test Area Therapeutics (6) Test Category (-) Analgesics (6) Hallucinogens (4) Test Sub-Category Opiates/Opioids (6) Your search has returned no tests.