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 (2) Serum or Plasma (2) (-) Tissue (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alkaloids (2) Antipyretics (2) Antivirals (1) Avicides (1) Benzodiazepines (2) Beta-2 Andrenergic Agonists (1) (-) Beta Blockers (2) Cannabinoids (2) Carbonic Anhydrase Inhibitors (1) CNS Stimulants (1) Designer Benzodiazepines (1) Hallucinogens (2) Opiates/Opioids (5) Other (12) Sympathomimetic Amines (1) Test Test Name 0483TI Atenolol, Tissue 0483U Atenolol, Urine