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) (2) Sample Type (-) Blood (3) Fluid (2) Serum or Plasma (3) Tissue (2) Urine (2) Test Area Therapeutics (3) Test Category (-) Antihypertensives (3) Test Sub-Category Alpha-2 Adrenergic Antagonists (1) Alpha Blockers (1) (-) Beta Blockers (2) (-) Calcium Channel Blockers (1) Diuretics (1) Your search has returned no tests.