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 (5) Antiepileptics/Antiseizures (2) (-) Antihypertensives (2) Antimicrobials (1) Immunosuppressants (1) Metals/Elements (2) Vasodilators (1) Volatiles (2) Test Sub-Category Calcium Channel Blockers (2) Test Test Name 4770B Verapamil, Blood 4770U Verapamil, Urine