Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (3) Sample Type Blood (68) Fluid (10) (-) Meconium (1) Serum or Plasma (80) Tissue (9) Urine (40) Test Area Newborn Tox (1) Test Category Analgesics (1) Test Sub-Category Opiates/Opioids (1) Your search has returned no tests.