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) (3) Sample Type Blood (4) (-) Fluid (3) Serum or Plasma (4) Tissue (2) Urine (2) Test Area Therapeutics (3) Test Category (-) Analgesics (3) Test Sub-Category (-) Opiates/Opioids (3) Your search has returned no tests.