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) (2) Sample Type Blood (2) Fluid (2) (-) Hair (1) Serum or Plasma (2) Tissue (2) (-) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (2) Test Sub-Category Benzodiazepines (3) Carboxylic Acids (1) Diuretics (1) (-) Opiates/Opioids (2) Other (2) Selective Serotonin Reuptake Inhibitors (SSRI) (3) Trace Elements (1) Test Test Name 2079U Fentanyl and Metabolite, Urine 9291H Fentanyl Screen, Hair