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 Antiarrhythmics (5) Barbiturates (3) Carboxylic Acids (3) Hydrocarbons (1) Insecticides (3) Macrominerals (4) Metals/Elements (5) Opiates/Opioids (4) Organochlorides (1) Other (100) Phenothiazines (1) Selective Serotonin Reuptake Inhibitors (SSRI) (5) Tetracyclics (3) Toxic Elements (29) Trace Elements (13) Tricyclic (3) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma