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) (2) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Sympathomimetic Amines (2) Test Sub-Category Alkaloids (2) Alpha-2 Adrenergic Antagonists (2) Alpha/Beta Adrenergic Agonists (2) Alpha Blockers (1) Antibiotics (2) Antifungals (1) Antihistamines (2) Antimalarials (2) Benzodiazepines (3) Beta Blockers (3) Biomarkers (1) Diuretics (1) Dopamine Antagonists (1) Non-Benzodiazepines (2) NSAIDs (1) Opiates/Opioids (7) Other (61) Selective Serotonin Reuptake Inhibitors (SSRI) (3) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (3) Stimulants (1) Sympathomimetic Agents (2) Synthetic Cannabinoids (1) Tricyclic (2) (-) Vasoconstrictors (2) Test Test Name 4350B Tetrahydrozoline, Blood 4350U Tetrahydrozoline, Urine