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) (4) Sample Type Blood (2) Meconium (1) Serum or Plasma (2) Urine (1) Test Area Newborn Tox (1) (-) Therapeutics (6) Test Category (-) Analgesics (6) Drugs of Abuse (2) Test Sub-Category Opiates/Opioids (6) Your search has returned no tests.