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 Alcohols (13) Anesthetics (3) Antianxiety (3) Antiarrhythmics (3) Anticholinergics (3) Antidiabetics (4) Antidiarrheals (2) Antiepileptics/Antiseizures (21) Antihistamines (9) (-) Antihypertensives (1) Antineoplastics (1) Antipsychotics (12) Antithyroids (2) Antitussives/Cough Suppressants (7) Biomarkers (5) Carbonic Anhydrase Inhibitors (1) Cholinesterase Inhibitors (2) Diagnostic Aids (1) Diuretics (1) Emetics (4) Expectorants (3) Hallucinogens (18) Herbicides (3) Hydrocarbons (1) Immunosuppressants (5) Laxatives (1) Metals/Elements (33) Muscle Relaxants (10) NMDA Antagonists (2) Pesticides/Insecticides (3) Retinoids (2) Sedative/Hypnotics (12) Solvents (20) Stimulants (4) Volatiles (31) Test Sub-Category Alpha-2 Adrenergic Agonists (3) Beta Blockers (3) Diuretics (7) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma