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) (1) Sample Type Blood (8) Fluid (2) Hair (1) Serum or Plasma (7) (-) Tissue (1) Urine (6) Test Area (-) Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Benzodiazepines (1) (-) Opiates/Opioids (1) Other (2) Test Test Name 9176TI Fentanyl and Metabolite Screen, Tissue