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 (2) (-) Fluid (1) Serum or Plasma (3) 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