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) Sample Type 24 Hour Urine (1) Blood (15) Fluid (2) Hair (2) Liquid (1) (-) Meconium (1) Nails (1) RBCs (2) Serum or Plasma (16) Tissue (1) Urine (16) Test Area Newborn Tox (1) Test Category Analgesics (1) Test Sub-Category (-) Opiates/Opioids (1) Your search has returned no tests.