A gastroscopy is a procedure done to examine your oesophagus, stomach and first part of the small bowel by passing a thing flexible long tube with a small video on the tip through the mouth (the gastroscope). This is done under deep sedation (you are not awake for the procedure).  An aneasthetic specialist is present at the gastroscopy to manage the sedation. The test takes 10- 15 minutes.

A colonoscopy is a procedure done to examine your large bowel (colon) by passing a thin long, flexible tube with a small video on the tip through the bottom. This is done under deep sedation (you are not awake for the procedure).  An anaesthetic specialist is present at the colonoscopy to manage the sedation. The test usually takes 20-30 minutes but may be longer for some patients.