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) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (1) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (2) Test Area Drugs of Abuse (1) Therapeutics (1) Test Category Analgesics (1) NPS/Designer Drugs (1) Test Sub-Category Alkaloids (2) Antipyretics (1) Antivirals (1) Benzodiazepines (1) Beta Blockers (1) Carbonic Anhydrase Inhibitors (1) (-) Opiates/Opioids (2) Other (4) Test Test Name 0205U Acetyl Fentanyl and Metabolite, Urine 9103U Alfentanil Screen, Urine