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 (2) (-) Urine (1) Test Area Exposure (1) Test Category Pesticides/Insecticides (1) Test Sub-Category Alkaloids (2) Antipyretics (1) Antivirals (1) (-) Avicides (1) Benzodiazepines (1) Beta Blockers (1) Cannabinoids (1) Carbonic Anhydrase Inhibitors (1) CNS Stimulants (1) Designer Benzodiazepines (1) Hallucinogens (2) Opiates/Opioids (5) Other (8) Sympathomimetic Amines (1) Test Test Name 0276U 4-Aminopyridine Exposure, Urine