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 (2) Antibiotics (5) Anticholinergics (2) Anticoagulants (3) Antifungals (2) Antihistamines (2) Antimalarials (2) Antiparasitics (2) Antivirals (1) Barbiturates (3) Benzodiazepines (4) Beta-2 Andrenergic Agonists (1) Beta Blockers (4) Biomarkers (1) Calcium Channel Blockers (2) Cyanide (2) Diuretics (2) Dopamine Antagonists (2) Non-Barbiturate Sedative Hypnotics (2) Non-Benzodiazepines (2) NSAIDs (2) Opiates/Opioids (7) Organochlorides (1) Other (121) Phenothiazines (2) Sedative-Hypnotics (2) Selective Serotonin Reuptake Inhibitors (SSRI) (4) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (4) Stimulants (2) Sulfonylureas (2) Sympathomimetic Agents (2) Synthetic Cannabinoids (1) Toxic Elements (22) Trace Elements (4) Tricyclic (6) (-) Vasoconstrictors (2) Test Test Name 4350B Tetrahydrozoline, Blood 4350SP Tetrahydrozoline, Serum/Plasma