Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) Fluid (1) Serum or Plasma (1) Tissue (1) (-) Urine (1) Test Area Therapeutics (1) Test Category Anticholinergics (1) (-) Antihistamines (1) Antitussives/Cough Suppressants (4) Diuretics (1) Potassium Channel Blockers (1) Test Sub-Category (-) Other (1) Test Test Name 1760U Diphenhydramine, Urine