6A Napier Road, Annexe Block #05-35C Gleneagles Hospital
Mount Alvernia Medical Centre A  #06-07,  820 Thomson Road


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What is a Gastroscopy?

Gastroscopy uses a thin, long, and flexible tube (also known as a gastroscope) with a video camera and light attached to one end, to view the insides of the upper digestive tract.

The tube is inserted into the mouth and gently passed through the oesophagus, stomach, and the duodenum (upper small intestine).

The light and video camera allows your doctor to observe and detect any problems with your upper digestive tract; samples may also be taken for biopsy to enable a more accurate diagnosis.

How does a Gastroscopy work?

Gastroscopies are short procedures with a quick recovery time. Even though it is an in-patient procedure, you can still return home the same day. The only preparation you need is a 6 hours fast and the actual procedure only takes 15 minutes.
  • A local anaesthetic solution is sprayed onto the back of your throat and IV sedation is given send patient to sleep so it can be a completely painless procedure.
  • A plastic mouthguard is placed in your mouth to prevent you from biting down on the gastroscope.
  • The gastroscope is slowly and gently inserted into your mouth and then guided down to your oesophagus, stomach, and upper duodenum. 
  • The video camera and light at the end of the gastroscope will help capture images which are then sent to a screen for your doctor to study.
  • If any abnormalities are observed, samples will be taken for a biopsy. The procedure also allows for therapy (treatment) of many lesions seen.

How do I prepare for a Gastroscopy?

Like most medical procedures, you are advised to refrain from eating and drinking for 6 hours before it. This is to ensure that your stomach is empty, and your doctor will be able to get a clear view of your upper digestive tract.
You must also inform your gastroenterologist of any medication you may be taking, and of any allergies you may have.

What can I expect after a Gastroscopy procedure in Singapore?

Most patients should be awake within minutes after the procedure and should not feel any discomfort. Some patients may feel drowsy for a few hours. You will have to wait for an hour or two until the sedative wears off and you might need a relative or friend to accompany you home as you will not be able to drive.

After the test, your doctor will inform you if he/she observed any abnormalities and if samples were taken for a biopsy. If such, your biopsy results should be ready in a few weeks and your doctor will call you with the results. The next step will depend on the results of your gastroscopy and if applicable, your biopsy.

What are the benefits of a Gastroscopy?

  • Allows for early detection (even before symptoms start)
  • Quick 15 minutes procedure
  • Minimally invasive
  • Accurate diagnostic capabilities
  • Safe procedure

Is a Gastroscopy Medisave claimable in Singapore?

Yes. It is medisave & insurance claimable and your doctor will advise you further.

What are the common possible complications or risks of a Gastroscopy in Singapore?

A gastroscopy is relatively safe procedure with little to no complications or risks; however, if they do occur, here’s what they might look like:
  • Sore throat: May occur and is usually mild. 
  • Bleeding: Less than 0.1% chance and can be treated during the scope itself.
  • Reaction to the sedative or anaesthetic: Because of this, patients vital signs are monitored continuously through the procedures and after.
  • Perforation: A hole in the lining of the intestine. When detected early it can be treated with the scope.

Frequently asked questions

Will I have to stay overnight in the hospital?
No, a gastroscopy is a in-patient procedure with same day discharge.
Is the procedure painful?
No, a gastroscopy is not painful as it is done under sedation.
What happens if the results of my biopsy are poor?
Your doctor will follow-up with you and guide you on the next steps to take.

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    We treat all types of gastrointestinal conditions and specialise in performing endoscopic procedures such as Advanced Endoscopy, ERCP and EUS
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    6A Napier Road, Annexe Block #05-35C Gleneagles Hospital
    Singapore 258500
    820 Thomson Road, #06-07 Mount Alvernia Medical Centre A Singapore 574623

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