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 (1) Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (2) (-) Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Alkaloids (2) Antipyretics (3) Antivirals (3) Benzodiazepines (4) Beta-2 Andrenergic Agonists (2) Beta Blockers (2) Calcium Channel Blockers (1) Carbonic Anhydrase Inhibitors (1) NSAIDs (1) (-) Opiates/Opioids (1) Other (10) Phenothiazines (1) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Tricyclic (3) Test Test Name 0200B Alfentanil, Blood