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) (3) Gas Chromatography (GC) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) (-) Fluid (1) Oral Fluid (Saliva) (2) Serum or Plasma (1) Tissue (1) Urine (1) Test Area Therapeutics (1) Test Category Antiarrhythmics (1) (-) Antihistamines (1) Cholinesterase Inhibitors (1) Test Sub-Category Other (1) Test Test Name 1760FL Diphenhydramine, Fluid