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) (5) Sample Type Blood (1) Meconium (2) Serum or Plasma (1) Urine (1) Test Area Newborn Tox (1) Therapeutics (4) Test Category (-) Analgesics (5) Test Sub-Category (-) Opiates/Opioids (5) Your search has returned no tests.