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 (8) Antiparasitics (2) Antivirals (5) Appetite Suppressants (3) Barbiturates (11) Biomarkers (1) Calcium Channel Blockers (5) Herbicides (3) Hydrocarbons (1) Insecticides (8) Monoamine Oxidase Inhibitors (MAOI) (3) Non-Barbiturate Sedative Hypnotics (4) Opiates/Opioids (13) Organochlorides (6) Other (201) Phenothiazines (20) Sedative-Hypnotics (2) Selective Serotonin Reuptake Inhibitors (SSRI) (3) Small Molecule (2) Succinimide (5) Tetracyclics (6) Tricyclic (37) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma