| Appropriate indications | Inappropriate indications |
| Haematemesis | Dysphagia |
| Haematemesis + melaena | Nausea + vomiting |
| Melaena | Weight loss |
| Liver disease + evidence of bleed | Diarrhoea |
| Liver disease + drop in Hb | Campylobacter infection |
| Dysphagia + haematemesis | Anaemia |
| Intermittent rectal bleeding | Abdominal pain |
| Overt rectal bleeding | Constipation |
| Previous peptic ulcer | |
| IBD assessment |