Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics – for differential diagnostic clarification.
- Abdominal ultrasonography (ultrasound examination of abdominal organs) – to exclude renal/liver diseases, changes in the gastrointestinal tract (gastrointestinal tract).
- Esophago-gastro-duodenoscopy (ÖGD; reflection of esophagus, stomach and duodenum) with biopsy (tissue sampling) from the gastric mucosa – to exclude chronic type A gastritis* or bleeding.
* Annual EEGD check, due to increased risk of gastric cancer in chronic atrophic gastritis.
