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) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (10) (-) Fluid (5) Hair (1) Meconium (1) Oral Fluid (Saliva) (1) Serum or Plasma (9) Tissue (4) Urine (6) Test Area Therapeutics (5) Test Category Analgesics (5) Test Sub-Category (-) Opiates/Opioids (5) Other (1) Your search has returned no tests.