Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (1) Serum or Plasma (1) Urine (1) Test Area (-) Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category (-) Alpha-2 Adrenergic Agonists (1) Amphetamines (1) Antiarrhythmics (1) Antifungals (3) Antihistamines (1) Antimalarials (2) Antiparasitics (1) Antivirals (1) Barbiturates (1) Benzodiazepines (2) Beta Blockers (1) Diuretics (2) GABA Analogues (1) H2 Antagonists (1) Hormones (1) Metals/Elements (1) Non-Benzodiazepines (1) NSAIDs (5) Opiates/Opioids (3) Other (40) Selective Serotonin Reuptake Inhibitors (SSRI) (2) Sulfonylureas (1) Tetracyclics (1) Tricyclic (1) Test Test Name 2186B Guanfacine, Blood