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 (2) Fluid (1) (-) Serum or Plasma (1) (-) Tissue (1) Urine (2) Test Area Therapeutics (2) Test Category Antidepressants (4) Antiepileptics/Antiseizures (5) (-) Antihypertensives (2) Antimicrobials (2) Metals/Elements (1) Other (1) Vasodilators (1) Test Sub-Category Calcium Channel Blockers (2) Test Test Name 4770SP Verapamil, Serum/Plasma 4770TI Verapamil, Tissue