Endoscopy is the insertion of a long, thin tube directly into the body to observe an internal organ — such as the gastrointestinal tract — in detail. By observing the images on the screen, doctors can detect very small lesions just a few millimeters and biopsy to look for cancer or test for Helicobacter Pylori bacteria that cause disease. From there, an appropriate diagnosis and treatment can be obtained.

When would you need an endoscopy?

Most people with severe digestive problems need a gastroscopy or colonoscopy. 

Signs you need to see your doctors soon:

• Epigastric pain
• Nausea or vomiting
• Indigestion, belching
• Diarrhea or constipation
• Abnormal bowel
• ...

Preparing for an endoscopy
An endoscopy does not require an overnight stay and usually only takes around 1 hour to complete. The doctor will provide instructions about the preparation for the procedure.

For many types of endoscopy, the individual needs to fast for around 12 hours, though this varies based on the type.

For procedures investigating the gut, laxatives may be taken the night before to clear the system.

A doctor will conduct an examination before the endoscopy. It is important to mention all current medications (including supplements) and any previous procedures.