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) (4) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type (-) Blood (1) Fluid (1) (-) Serum or Plasma (1) Tissue (1) Urine (1) Test Area Therapeutics (2) Test Category Analgesics (4) Antiarrhythmics (4) Anticholinergics (2) Antidepressants (6) Antiemetics (1) (-) Antihistamines (2) Antihypertensives (4) Antithrombotics (3) Antitussives/Cough Suppressants (5) Cholinesterase Inhibitors (2) Diuretics (3) NPS/Designer Drugs (6) Pesticides/Insecticides (2) Potassium Channel Blockers (1) Vasodilators (2) Test Sub-Category Other (2) Test Test Name 1760B Diphenhydramine, Blood 1760SP Diphenhydramine, Serum/Plasma