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 (6) Antiepileptics/Antiseizures (5) (-) Antihypertensives (2) Antimicrobials (3) Immunosuppressants (1) Metals/Elements (2) Other (1) Vasodilators (2) Volatiles (1) Test Sub-Category Calcium Channel Blockers (2) Test Test Name 4770B Verapamil, Blood 4770SP Verapamil, Serum/Plasma