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) (14) Headspace Gas Chromatography (GC) (8) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (11) Sample Type (-) Blood (1) Meconium (2) (-) Serum or Plasma (1) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (2) Test Sub-Category Opiates/Opioids (2) Test Test Name 0801B Buprenorphine and Metabolite - Free (Unconjugated), Blood 0801SP Buprenorphine and Metabolite - Free (Unconjugated), Serum/Plasma