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 (113) Fluid (14) Hair (4) Liquid (3) (-) Meconium (1) Nails (3) RBCs (5) Serum or Plasma (121) Tissue (12) Urine (70) Test Area Newborn Tox (1) Test Category Analgesics (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 4127ME Buprenorphine and Metabolite - Total (Qualitative), Meconium