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) (3) Sample Type (-) Blood (2) Serum or Plasma (2) (-) Urine (1) Test Area Therapeutics (3) Test Category Analgesics (3) Antianxiety (6) Antiarrhythmics (3) Anticholinergics (2) Antidepressants (10) Antihistamines (5) (-) Antihypertensives (3) Antileprosy Agents (1) Antithrombotics (1) Antitussives/Cough Suppressants (6) Cholinesterase Inhibitors (1) Diuretics (2) Drugs of Abuse (22) Drugs of Abuse, Therapeutics (6) Industrial/Environmental Toxins (2) NPS/Designer Drugs (6) Pesticides/Insecticides (5) Potassium Channel Blockers (1) Psychoactives (2) Solvents (7) Stimulants (2) Vasodilators (1) Volatiles (4) Test Sub-Category Alpha Blockers (1) Calcium Channel Blockers (2) Test Test Name 1640B Diltiazem, Blood 1640U Diltiazem, Urine 1815B Doxazosin, Blood