Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography/Mass Spectrometry (GC/MS) (1) (-) 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 (2) Alkylating Agents (1) Anticoagulants (7) Antimalarials (1) Antipyretics (1) Antivirals (1) (-) Avicides (1) Benzodiazepines (2) Beta-2 Andrenergic Agonists (1) Beta Blockers (2) Calcium Channel Blockers (1) Cannabinoids (4) Carbamates (1) Carbonic Anhydrase Inhibitors (1) CNS Stimulants (1) Designer Benzodiazepines (1) Hallucinogens (2) Hemostatics (1) NSAIDs (1) Opiates/Opioids (6) Other (20) Sympathomimetic Amines (1) Test Test Name 0276SP 4-Aminopyridine Exposure, Serum/Plasma