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 Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category Pesticides/Insecticides (1) Test Sub-Category Alkaloids (4) Anticoagulants (1) Antipyretics (2) Antivirals (2) (-) Avicides (1) Benzodiazepines (3) Beta-2 Andrenergic Agonists (1) Beta Blockers (3) Calcium Channel Blockers (1) Cannabinoids (5) Carbonic Anhydrase Inhibitors (2) CNS Stimulants (2) Designer Benzodiazepines (2) Hallucinogens (4) NSAIDs (1) Opiates/Opioids (11) Other (22) Sympathomimetic Amines (2) Test Test Name 0276U 4-Aminopyridine Exposure, Urine