Endoscopy is a minimally invasive procedure that allows doctors to examine the digestive tract using a thin, flexible tube with a camera. By providing a clear, real-time view of your digestive system, endoscopy aids in early detection and intervention, ensuring timely care. The main types of endoscopies are gastroscopy and colonoscopy.
A gastroscopy, or oesophago-gastro-duodenoscopy (OGD), examines the upper gastrointestinal (GI) tract, which includes the oesophagus, stomach, and upper small intestine. It is used to detect conditions like gastroesophageal reflux disease (GERD), gastritis, and stomach or oesophageal cancer.
A gastroscopy may help assess symptoms such as:
A colonoscopy provides a detailed view of the colon and rectum to detect abnormalities such as inflammation, polyps, or cancer. If needed, this procedure may also be used to remove polyps or collect tissue samples for further analysis as well.
A colonoscopy is commonly recommended for colorectal cancer screening if you are 50 years or older, even if you have no symptoms. It may be recommended earlier if you have:
A colonoscopy may also help assess symptoms such as:
If you have persistent heartburn, rectal bleeding or other digestive issues, an endoscopy is a quick, painless way to find answers and take charge of your health.
Following your doctor’s instructions is essential to avoid rescheduling and ensure clear visibility during the procedure.
Before a Gastroscopy
Fast for at least 6 hours before the procedure to keep your stomach empty. This helps your doctor see clearly and reduces the chance of vomiting afterwards.
Before a Colonoscopy
Perform bowel preparation, which usually involves taking a prescribed laxative the day before to cleanse your bowels. Stick to a clear liquid diet (broth, tea, sports drinks) and avoid solid food. You may experience mild bloating, cramping, or nausea.
An endoscopy is a quick and painless procedure. During the procedure, you will be comfortably positioned while the scope is gently inserted into your body – through the mouth (gastroscopy) or anus (colonoscopy). Throughout the procedure, you will be relaxed and may be given a mild sedative to ensure comfort.
Both procedures are generally safe and well-tolerated by patients. However, some mild side effects may occur:
The doctor should be able to discuss the initial findings right after the procedure. If a biopsy is taken, results will be available within a few days.
Most people can return to normal activities the next day, but mild drowsiness from sedation may linger. Following your doctor’s advice will help ensure a smooth recovery.
The cost of an endoscopy is MediSave deductible and may be covered by medical insurance. At the Digestive & Liver Surgery Centre, we are on the following insurance panels:
Panel Specialist – Integrated Shield Plan:
Senior Consultant Surgeon
MBBS (Singapore), MMed (Singapore), MPH (USA),
FRCS (Edinburgh), FAMS (General Surgery)
Dr Tan is a skilled surgeon with extensive experience in performing endoscopies, including OGD and colonoscopy. With advanced training in the US, he brings a wealth of knowledge to the diagnosis and treatment of digestive conditions. For his commitment to providing the best possible care for his patients, Dr Tan has earned multiple awards for service excellence.
Professional Care You Can trust
New DLS Group Office
We have opened a new administrative office to support our operations.
The address is:
545 Orchard Road
#10-09 Far East Shopping Centre
Singapore 238882
All medical services continue as usual at our four clinics.
Thank you!
Senior Consultant Surgeon
Senior Consultant Surgeon
