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) Sample Type Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (37) Impairment (11) Newborn Tox (2) (-) Therapeutics (2) Test Category Alcohol Deterrents (1) Analgesics (5) Antianxiety (8) Antiarrhythmics (9) Anticholinergics (3) Antidepressants (14) Antiemetics (1) Antiepileptics/Antiseizures (1) Antihistamines (12) Antihypertensives (5) Antileprosy Agents (2) Antithrombotics (4) Antitussives/Cough Suppressants (10) Cholinesterase Inhibitors (3) Diuretics (3) Muscle Relaxants (1) (-) Potassium Channel Blockers (2) Stimulants (3) Vasodilators (2) Test Sub-Category Other (2) Test Test Name 0275SP Dalfampridine, Serum/Plasma 0275U Dalfampridine, Urine