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What is Colonoscopy?

Colonoscopy is a diagnostic procedure to examine your colon with the endoscope inserting through anus, rectum, advancing into colon, and finally caecum, or terminal ileum. If any abnormality or polyp is detected, biopsy or polypectomy will also be done during the procedure.

Polyp is found during colonoscopy

The polyp has been removed completely during colonoscopy examination




Some Facts about Colorectal Cancer

  • Since 2012, colorectal cancer has become the MOST COMMON cancer.
  • In 2018, there were 5,634 new incidents of colorectal cancer, which was TOP 1 common cancer in Hong Kong1. And its trend is predicted to increase 50% in 2030.
  • It is the 2nd killer of cancer diseases.

*Information from Hong Kong Cancer Registry, Hospital Authority*

Why Endoscopy Examination is Important

  • Early detection and removal of polyps reduce the chance of development of colorectal cancer.
  • Pre-cancerous lesions can be detected and removed, which is a safe, effective and scar-free procedure.


  • Aged 50 or above
  • With family history of colon cancer
  • Personal history of colonic polyps
  • Positive result in Occult Blood Test / Barium enema / CT colonography
  • If you have experienced below symptoms:
    • Change in frequency of bowel habit
    • Blood in stool
    • Incomplete evacuation feeling
    • Persistent abdominal pain

Get to know more about colonoscopy

Early Screening and Diagnosis are Crucial to Successful Treatment
The Procedure
  • You will be instructed to position yourself in a proper way. Sedation medication will be given for sleep induction.
  • A flexible, slender endoscope will be inserted gently and advanced into the colon. The internal lining of the colon will be examined carefully.
  • If polyp is found, it will usually be removed by dedicated equipment.
How Long Does it Take
  • The procedure normally takes about 30 minutes, but varies with actual circumstances.
  • Taking the recovery time for sedative worn-off into account, please prepare a 2-3 hours stay at the Centre.
To Prepare for the Procedure
  • Before the procedure day
    • Consume low residue diet 3 days before the procedure; avoid high-fiber food, e.g. fruits and vegetables.
    • Consume fluid diet 1 day before the procedure. BEWARE: milk is NOT allowed.
    • Stop certain type of medications as instructed by your specialist.
    • Undergo the bowel preparation with laxatives prescribed by your specialist.
         *Note: Poor bowel preparation may affect the examination result.
    • You should not eat at least 6 hours before the procedure.
  • On the day of procedure
    • Ask for an adult as companion whenever deemed possible.
    • Arrive 30 minutes before the scheduled time.
    • Wear simple and comfortable outfit.
    • Prepare the case for dentures and/or contact lens.
    • Avoid unnecessary metallic accessories and/or excessive valuables.
After the Procedure
  • You will be closely monitored in the recovery area until most of the effects of sedatives worn off.
  • Do not drive, operate any machinery, consume alcohol or sign legal documents within 24 hours.
Points to Note
  • Complications including delayed bleeding or perforation during the procedure is uncommon.
  • Client may experience mild swelling and affliction, and CO2 insufflation will be carried out to minimize the discomfort, as the substance is proved to be rapidly cleared from colon by passive absorption.
  • Colonic distention and pain can be significantly reduced with CO2 insufflation, compared to air insufflation, without any additional adverse reactions (1, 2).
Charges & Payment


Oesophago-Gastro-Duedenoscopy and Colonoscopy

Under IV Sedation

$9,800 $15,500

Under Monitored Anaesthetic Care

$12,500 $18,800


We support cashless payment.  Payment by credit card, WeChat Pay, Alipay, FPS are encouraged.

Holders of valid cashless health insurance plan can leave upon discharge should the services used do not include any items that are not covered by your insurance policy or exceed the insured amount.

  1. Wu J, Hu B. The role of carbon dioxide insufflation in colonoscopy: a systematic review and meta-analysis. Endoscopy. 2012;44(2):128-136. doi:10.1055/s-0031-1291487
  2. Bretthauer M, Lynge AB, Thiis-Evensen E, Hoff G, Fausa O, Aabakken L. Carbon dioxide insufflation in colonoscopy: safe and effective in sedated patients. Endoscopy. 2005;37(8):706-709. doi:10.1055/s-2005-870154