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 (-) Serum or Plasma (1) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Alpha-2 Adrenergic Agonists (4) Alpha-2 Adrenergic Antagonists (2) Alpha Blockers (3) Beta Blockers (14) Calcium Channel Blockers (6) Diuretics (8) Drug Facilitated Sexual Assault (2) Other (19) Thiazides (1) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma