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) Test Area (-) Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alkaloids (3) Alpha Blockers (2) Antibiotics (3) Benzodiazepines (5) Beta-2 Andrenergic Agonists (1) Beta Blockers (2) (-) Diuretics (2) NSAIDs (2) Opiates/Opioids (10) Other (33) Sulfonylureas (2) Tricyclic (3) Vasoconstrictors (3) Test Test Name 4540B Triamterene, Blood 4540SP Triamterene, Serum/Plasma