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 Antiarrhythmics (1) Test Sub-Category Alkaloids (1) Benzodiazepines (1) (-) Beta Blockers (1) Opiates/Opioids (2) Other (6) Sympathomimetic Amines (1) Test Test Name 3227U Beta-Blockers Panel, Urine