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) (2) Sample Type (-) Blood (3) Meconium (2) Serum or Plasma (3) Urine (3) Test Area Therapeutics (3) Test Category (-) Analgesics (3) NPS/Designer Drugs (2) Test Sub-Category (-) Opiates/Opioids (3) Test Test Name 0801B Buprenorphine and Metabolite - Free (Unconjugated), Blood 0802B Buprenorphine and Metabolite - Free (Unconjugated) Screen, Blood 0885B Butorphanol - Free (Unconjugated), Blood