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 (2) Fluid (2) Hair (1) Serum or Plasma (4) Tissue (2) (-) Urine (1) Test Area (-) Therapeutics (1) Test Category (-) Analgesics (1) Antiarrhythmics (1) Antidepressants (3) Antihypertensives (1) Sedative/Hypnotics (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 2079U Fentanyl and Metabolite, Urine