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 (4) (-) Tissue (1) Urine (1) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Beta Blockers (1) (-) Calcium Channel Blockers (1) Other (7) Selective Serotonin Reuptake Inhibitors (SSRI) (1) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Test Test Name 4770TI Verapamil, Tissue