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 (1) (-) Fluid (1) Serum or Plasma (1) Tissue (1) (-) Urine (1) Test Area (-) Therapeutics (2) Test Category Antidepressants (3) Antiepileptics/Antiseizures (2) (-) Antihypertensives (2) Test Sub-Category Calcium Channel Blockers (2) Test Test Name 4770FL Verapamil, Fluid 4770U Verapamil, Urine