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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (2) Fluid (1) Serum or Plasma (2) Tissue (1) Urine (1) Test Area Therapeutics (2) Test Category Antidepressants (3) Antiepileptics/Antiseizures (1) (-) Antihypertensives (1) Antimicrobials (1) Immunosuppressants (1) Metals/Elements (1) (-) Vasodilators (1) Volatiles (1) Test Sub-Category Calcium Channel Blockers (1) Other (1) Test Test Name 4764B Vardenafil and Metabolite, Blood 4770B Verapamil, Blood