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) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (4) Serum or Plasma (4) Tissue (1) (-) Urine (2) Test Area (-) Therapeutics (2) Test Category Analgesics (5) Anesthetics (2) Antianxiety (1) Anticholinergics (3) Antidepressants (4) Antiepileptics/Antiseizures (1) Antihistamines (1) (-) Antihypertensives (1) Antimicrobials (2) Antipsychotics (1) (-) Antitussives/Cough Suppressants (1) Depressants (1) Diuretics (1) Potassium Channel Blockers (1) Sedative/Hypnotics (5) Stimulants (3) Test Sub-Category Beta Blockers (1) Other (1) Test Test Name 0483U Atenolol, Urine 0585U Benzonatate, Urine