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 (3) Antivirals (2) Barbiturates (1) Benzodiazepines (2) Beta-2 Andrenergic Agonists (1) (-) Beta Blockers (2) Carbonic Anhydrase Inhibitors (1) Opiates/Opioids (1) Other (6) Phenothiazines (1) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Tricyclic (3) Test Test Name 0483TI Atenolol, Tissue 0483U Atenolol, Urine