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 Antihypertensives (2) Test Sub-Category Anticholinergics (1) Antiparasitics (1) Barbiturates (1) (-) Calcium Channel Blockers (2) Non-Barbiturate Sedative Hypnotics (1) Other (11) Phenothiazines (1) Sedative-Hypnotics (1) Tricyclic (2) Test Test Name 4770SP Verapamil, Serum/Plasma 4770TI Verapamil, Tissue