Gastroenterology• Updated 21 October 2026
Upper GI Endoscopy
A procedure using a thin camera to look at the food pipe, stomach and duodenum.
Results: Same day; biopsies in a few days
Quick Summary
Primary Purpose
To investigate indigestion, swallowing problems, bleeding, anaemia and ulcers.
What It Measures
The lining of the upper gut, with biopsies if needed.
Preparation
Fast for 6–8 hours; arrange transport if sedated.
Overview
Biopsies can test for H. pylori, coeliac disease and cancer.
Bleeding ulcers can be treated during the procedure.
What It Measures
Lining
Inflammation, ulcers and growths.
Biopsies
Tissue samples.
How It's Performed
- 01
Preparation
Throat spray or sedation.
- 02
Procedure
Camera through the mouth for 5–15 minutes.
- 03
Recovery
Rest until sedation wears off.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Endoscopy(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Gastroscopy(opens in a new tab) · NHS