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) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (1) Meconium (2) Serum or Plasma (1) Urine (1) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category (-) Opiates/Opioids (1) Test Test Name 0801B Buprenorphine and Metabolite - Free (Unconjugated), Blood