Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Enzymatic Assay (EZA) (2) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (2) Enzyme Immunoassay (EIA) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) Sample Type Blood (1) Serum or Plasma (2) Urine (1) Test Area Diagnostic Aids (2) Therapeutics (2) Test Category Alcohols (2) (-) Analgesics (2) Antihistamines (4) (-) Biomarkers (2) Depressants (4) Electrolytes (2) Sedative/Hypnotics (6) Volatiles (3) Test Sub-Category Opiates/Opioids (2) Small Molecule (2) Test Test Name 0642SP Betahydroxybutyric Acid, Serum/Plasma 0642U Betahydroxybutyric Acid, Urine 0802B Buprenorphine and Metabolite - Free (Unconjugated) Screen, Blood 0802SP Buprenorphine and Metabolite - Free (Unconjugated) Screen, Serum/Plasma