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 Blood (2) (-) Serum or Plasma (2) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (2) Antiarrhythmics (2) Anticholinergics (1) Antidepressants (3) Antiemetics (1) Antihistamines (1) (-) Antihypertensives (2) Antithrombotics (4) Antitussives/Cough Suppressants (3) Cholinesterase Inhibitors (1) Diuretics (2) Drugs of Abuse (2) Muscle Relaxants (1) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Vasodilators (1) Test Sub-Category Alpha Blockers (1) Calcium Channel Blockers (1) Test Test Name 1640SP Diltiazem, Serum/Plasma 1815SP Doxazosin, Serum/Plasma