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) (3) Sample Type (-) Blood (2) (-) Meconium (1) (-) Serum or Plasma (2) Urine (1) Test Area Drugs of Abuse (2) Impairment (2) Newborn Tox (1) Postmortem (8) (-) Therapeutics (5) Test Category Analgesics (5) Test Sub-Category Opiates/Opioids (5) Your search has returned no tests.