Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (5) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (3) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (7) (-) Fluid (2) Oral Fluid (Saliva) (2) Serum or Plasma (10) Tissue (2) Urine (8) 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