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 (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (16) Sample Type Blood (6) Serum or Plasma (8) Urine (3) Test Area (-) Therapeutics (17) Test Category Antihypertensives (17) Test Sub-Category Alpha-2 Adrenergic Agonists (6) (-) Alpha-2 Adrenergic Antagonists (3) Alpha Blockers (6) Beta Blockers (28) Calcium Channel Blockers (12) (-) Diuretics (13) Other (13) Thiazides (2) (-) Vasodilators (1) Your search has returned no tests.