A gastroscopy is a procedure that lets Double Check’s experts look at the inside of the oesophagus, stomach and first part of the small intestine (duodenum) using a thin, flexible tube called an endoscope. A gastroscopy helps find ulcers, tumours, and areas of inflammation and bleeding. It also lets the physician take some tissue, to test for diseases or the presence of harmful bacteria.

The patient cannot eat for at least 6 hours before gastroscopy.