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) Sample Type Blood (1) Fluid (1) (-) Serum or Plasma (1) Tissue (1) Urine (1) Test Area Therapeutics (1) Test Category (-) Antihypertensives (1) Test Sub-Category Alpha-2 Adrenergic Antagonists (1) Alpha Blockers (1) Beta Blockers (2) (-) Calcium Channel Blockers (1) Diuretics (1) Test Test Name 4770SP Verapamil, Serum/Plasma