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) (2) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (7) (-) Fluid (2) Serum or Plasma (10) Tissue (2) Urine (7) Test Area (-) Therapeutics (2) Test Category Antihistamines (1) Cholinesterase Inhibitors (1) Test Sub-Category Cardiac Glycosides (1) (-) Other (2) Test Test Name 1760FL Diphenhydramine, Fluid 1812FL Donepezil, Fluid