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 (4) Tissue (2) (-) Urine (1) Test Area Therapeutics (2) Test Category Acids (1) (-) Analgesics (2) Antiarrhythmics (1) Antidepressants (3) Antihypertensives (1) Depressants (2) Metals/Elements (1) Other (1) Sedative/Hypnotics (1) Test Sub-Category Opiates/Opioids (2) Test Test Name 2079U Fentanyl and Metabolite, Urine 9291H Fentanyl Screen, Hair