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) (3) Sample Type Serum or Plasma (1) Test Area Therapeutics (1) Test Category Alcohols (1) (-) Antihypertensives (1) Herbicides (3) Pesticides/Insecticides (1) Volatiles (3) Test Sub-Category Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma