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) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (1) Serum or Plasma (2) (-) Urine (1) Test Area Therapeutics (2) Test Category Antacids (2) Test Sub-Category Alkaloids (2) Alpha-2 Adrenergic Antagonists (2) Alpha/Beta Adrenergic Agonists (2) Alpha Blockers (1) Antibiotics (2) Anticholinergics (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 (62) 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 4085B Ranitidine, Blood 4085U Ranitidine, Urine