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Colorectal cancer is among the most common causes of cancer-related deaths worldwide. The chances of successful treatment improve significantly when the disease is detected early. Several screening methods are available, with colonoscopy and blood-based tests being two widely known options. Understanding their differences can help you make an informed choice about your health.
At Pantai Hospitals, we provide advanced diagnostic services and tailored cancer screening packages designed to suit individual needs.
A colonoscopy allows a doctor to visually examine the inner lining of the large intestine (colon and rectum) using a long, flexible tube fitted with a small camera.
This procedure provides a clear, real-time view of the entire colon, enabling the detection of abnormalities such as polyps, inflammation, or tumours.
If a polyp or suspicious growth is found, it can be removed or a biopsy can be taken during the same procedure, helping to prevent cancer development.
The procedure usually takes 30 to 60 minutes and is performed under sedation for patient comfort. Before the examination, patients follow a bowel preparation routine to ensure clear visibility.
For individuals at average risk, screening is generally advised every 10 years starting from the age of 45. Those with a family history of colorectal cancer or certain symptoms may require earlier and more frequent checks.
The choice between a colonoscopy and a blood or stool-based test depends on factors such as age, medical history, and individual risk.
A colonoscopy remains the most comprehensive and effective method for detecting colorectal cancer in its early stages, allowing both diagnosis and treatment in a single session.
|
Test |
How it Works |
Recommended |
|
Faecal Immunochemical Test (FIT) |
Detects hidden blood in stool using antibodies |
Annually |
|
Guaiac-based Faecal Occult Blood Test (gFOBT) |
Uses a chemical reaction to detect blood in stool |
Annually |
|
Sigmoidoscopy with FIT or high-sensitivity gFOBT |
Visual inspection of the lower colon combined with stool testing |
Sigmoidoscopy every 5 years, stool test annually |
For those at average risk, screening is recommended from the age of 45. Higher-risk individuals may need to begin earlier.
If a first-degree relative has had colorectal cancer, screening should begin at age 40, or 10 years before the relative’s diagnosis – whichever is earlier.
Seek medical advice promptly if you experience rectal bleeding, unexplained weight loss, persistent abdominal pain, or changes in bowel habits.
The procedure is usually carried out under sedation, so discomfort is minimal.
Blood-based tests are less accurate for early-stage detection compared to colonoscopy, but may be used alongside other screening tools.
Complications are uncommon but may include bleeding or perforation, particularly if a polyp is removed. These risks are reduced when the procedure is performed by experienced specialists.
Preparation involves following a clear liquid diet and taking prescribed laxatives to empty the colon. Your doctor will provide detailed instructions.
Yes. Stool-based tests can be a first step, with colonoscopy recommended if the results are abnormal.
Colorectal cancer is one of the most preventable cancers when detected early. Colonoscopy remains the most thorough and accurate method for both detection and prevention. Speak to your healthcare provider to assess your risk and choose the most suitable screening approach.
Pantai Hospitals offers a wide range of cancer screening services tailored to your health needs. Book your appointment today through our website or via the MyHealth360 application, available on the Google Play Store and Apple App Store. Our dedicated team is here to guide you every step of the way towards better health.
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