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 (3) Fluid (1) Serum or Plasma (3) Tissue (1) 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) Test Test Name 4000B Propranolol, Blood 4482B Timolol, Blood 4830B Yohimbine, Blood