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