What is a colonoscopy?


A colonoscopy is a procedure used to detect changes or abnormalities in the colon and rectum. The colon, or large intestine, is part of your digestive system. It connects the small intestine to the rectum.

How it works


During a colonoscopy, a long and flexible tube called a colonoscope is inserted through the anus and carefully pushed into the rectum and colon. A tiny video camera at the tip of the tube allows the doctor to view the inside of the entire colon.

This procedure is usually done under sedation for the patient's comfort.

Why do you need a colonoscopy?

Your doctor might recommend a colonoscopy if you have symptoms that suggest potential abnormalities in your colon or rectum.

These symptoms include:

  • Rectal bleeding
  • Blood in the stool
  • Changes in bowel habits such as constipation or diarrhoea
  • Abnormal weight loss
  • Abdominal pain

Screening for cancer

Colonoscopy is also a screening method for colon cancer, colon polyps and inflammatory bowel diseases.

Consider going for a colonoscopy if you:

  • Are above 45 years old
  • Have a family history of colon cancer

What are the risks and complications of a colonoscopy?

A colonoscopy is considered to be a safe procedure. Risks such as adverse reaction to the sedative, bleeding from the biopsy site or perforation of the colon or rectum wall are rare. Less than 1% of patients suffer from these complications.

Why choose Gleneagles Hospital?

At Gleneagles Hospital, our team of gastroenterology specialists are known in Singapore and the region for their expertise in treating a wide spectrum of stomach and digestive system conditions.

Patients undergoing a colonoscopy will receive a careful diagnosis and quality care from our dedicated medical team in a well-equipped clinical setting.

Estimated cost

Private healthcare can be affordable. Use our Hospital Bill Estimator to determine the estimated cost of this procedure. If you have hospital insurance, find out how you can use your insurance.

Our gastroenterologists and general surgeons

At Gleneagles Hospital, our colonoscopy patients are treated by our team of capable gastro specialists and general surgeons. They are well-versed in treating a wide range of stomach and gut-related issues such as chronic liver conditions, hepatitis as well as various cancers of the digestive system.

Please check with your insurance provider for more information, and for their most up-to-date list of panel doctors.

^Specialists may qualify to be on the Extended Panel (EP). You may enjoy selected panel benefits depending on your policy and riders.
This page has been reviewed by our medical content reviewers.

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