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) Antihistamines (1) (-) Antihypertensives (2) Antitussives/Cough Suppressants (2) Cholinesterase Inhibitors (1) Diuretics (1) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Vasodilators (1) Test Sub-Category Alpha Blockers (1) Calcium Channel Blockers (1) Test Test Name 1640B Diltiazem, Blood 1815B Doxazosin, Blood