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) (13) Sample Type Blood (5) Serum or Plasma (6) Urine (2) Test Area (-) Therapeutics (13) Test Category Antihypertensives (13) 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.