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) (2) Sample Type Blood (4) (-) Fluid (1) Serum or Plasma (4) (-) Tissue (1) Urine (2) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Beta Blockers (5) (-) Calcium Channel Blockers (2) Other (7) Test Test Name 4770FL Verapamil, Fluid 4770TI Verapamil, Tissue