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) (3) Sample Type Blood (1) Serum or Plasma (1) Urine (1) Test Area Therapeutics (3) Test Category (-) Antihypertensives (3) Test Sub-Category (-) Alpha-2 Adrenergic Antagonists (3) Alpha Blockers (2) Beta Blockers (7) Calcium Channel Blockers (5) Diuretics (2) Other (5) Your search has returned no tests.