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 (3) Serum or Plasma (3) (-) Tissue (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (4) Anesthetics (1) Antianxiety (2) Anticholinergics (4) Anticoagulants (1) Antidepressants (2) Antiepileptics/Antiseizures (2) (-) Antihypertensives (2) Antimicrobials (1) Benzodiazepines (1) Bronchodilators (1) Diuretics (1) NPS/Designer Drugs (6) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Psychoactives (2) Stimulants (3) Volatiles (1) Test Sub-Category Beta Blockers (2) Test Test Name 0483TI Atenolol, Tissue 0483U Atenolol, Urine