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 (2) (-) Serum or Plasma (2) Tissue (1) Urine (2) Test Area Therapeutics (2) Test Category Anesthetics (1) Antianxiety (1) (-) Anticholinergics (1) Antidepressants (2) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (1) (-) Antitussives/Cough Suppressants (1) Diuretics (1) Muscle Relaxants (1) Plasticizers (1) Test Sub-Category Alkaloids (1) (-) Other (2) Test Test Name 0585SP Benzonatate, Serum/Plasma 0620SP Benztropine, Serum/Plasma