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) (4) Sample Type (-) Blood (2) Fluid (2) Serum or Plasma (2) (-) Tissue (2) Urine (1) Test Area Therapeutics (4) Test Category (-) Analgesics (4) Test Sub-Category (-) Opiates/Opioids (4) Your search has returned no tests.