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) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (7) Sample Type Blood (3) (-) Fluid (1) Hair (1) Serum or Plasma (2) (-) Tissue (1) Test Area (-) Therapeutics (2) Test Category (-) Analgesics (2) Test Sub-Category Opiates/Opioids (2) Your search has returned no tests.