Functional dyspepsia refers to patients with dyspepsia where endoscopy (and other tests where relevant) has ruled out organic pathology that explains the patient’s symptoms. Th is guideline will focus on initial investigations for dyspep-sia such as Helicobacter pylori ( H. pylori) testing and endoscopy
https://www.cag-acg.org/images/publications/CAG_CPG_Dyspepsia_AJG_Aug2017.pdf

