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) (5) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (10) Sample Type Blood (4) Serum or Plasma (4) Urine (2) Test Area (-) Therapeutics (10) Test Category Antihypertensives (10) Test Sub-Category Alpha-2 Adrenergic Agonists (6) (-) Alpha-2 Adrenergic Antagonists (3) Alpha Blockers (6) Beta Blockers (28) (-) Calcium Channel Blockers (7) Diuretics (13) Other (13) Thiazides (2) Your search has returned no tests.