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) (1) Sample Type (-) Serum or Plasma (2) Test Area Therapeutics (2) Test Category Antihypertensives (1) Dopamine Precursor (1) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Amphetamines (1) Antiarrhythmics (2) Antibiotics (1) Antifungals (6) Antihistamines (1) Antimalarials (2) Antiparasitics (1) Antivirals (1) Barbiturates (1) Benzodiazepines (2) Beta Blockers (1) Carboxylic Acids (1) Diuretics (3) GABA Analogues (1) Hormones (1) Insecticides (1) Macrominerals (2) Metals/Elements (1) Non-Benzodiazepines (1) NSAIDs (7) Opiates/Opioids (5) Organic (2) Organochlorides (1) Other (67) (-) Parkinsons (1) Phenothiazines (1) Selective Serotonin Reuptake Inhibitors (SSRI) (2) Sulfonylureas (3) Synthetic Cathinone (1) Tetracyclics (1) Toxic Elements (6) Trace Elements (4) Tricyclic (1) (-) Vasodilators (1) Test Test Name 2308SP Hydralazine, Serum/Plasma 2504SP Levodopa, Serum/Plasma