Colonoscopy

A colonoscopy is used to detect changes or abnormalities in the large intestine (colon) and rectum. A long, flexible tube (colonoscope) with a tiny video camera at the tip is inserted into the rectum. This allows the doctor to view the inside of the entire colon. If necessary, tissue samples (biopsies) can be taken during a colonoscopy. Polyps or other abnormal growths can also be removed immediately through the scope. 

A colonoscopic examination is the gold standard for the detection of polyps and colorectal cancer screening, and can be done as a daycare procedure.

CT Colonography (Virtual Colonoscopy)

CT colonography, also known as virtual colonoscopy, uses low dose radiation CT scanning to obtain an interior view of the colon. Unlike conventional colonoscopy, patients do not require sedation. In addition to the colon, a CT colonography may also detect other issues in your abdomen.

Faecal Occult Blood Test

This is a lab test used to check stool samples for small amounts of hidden (occult) blood, which may indicate colon cancer or polyps  — though not all cancers or polyps bleed. If blood is detected through a faecal occult blood test, additional tests will be needed to determine the source of the bleeding.