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 Antimalarials (1) Diuretics (1) Opiates/Opioids (4) Other (5) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma