Colonoscopy — endoscopic examination of the large intestine
Colonoscopy is the most precise investigation of the large intestine. At EndoCap you get a private colonoscopy with a consultant surgeon — short wait, polyp removal the same day and a written report within 5 working days.
What is a colonoscopy?
Colonoscopy is an endoscopic examination in which a flexible colonoscope is passed via the rectum up through the entire large intestine and, if needed, a short distance into the lower small intestine. The camera provides a detailed view of the mucosa, and during the same procedure the doctor can remove polyps, take biopsies and stop minor bleeding.
Colonoscopy is the key investigation for rectal bleeding, chronic diarrhoea, iron-deficiency anaemia, inflammatory bowel disease (Crohn's/ulcerative colitis) and for the detection and prevention of colorectal cancer through polyp removal.
When is colonoscopy indicated?
- Visible blood or black stools
- Positive stool test (FIT/occult blood)
- Persistent diarrhoea or altered bowel habits
- Unexplained iron-deficiency anaemia or weight loss
- Suspected Crohn's disease or ulcerative colitis
- Polyp surveillance and screening in families with colorectal cancer
- Persistent lower abdominal pain
How the procedure works
The procedure typically takes 20–40 minutes. You can choose sedation so you are relaxed and often do not remember the procedure. If polyps are found, they are usually removed at once and sent for microscopy. With sedation you need someone to accompany you home and must not drive for the rest of the day.
Preparation (bowel cleansing)
- Low-fibre diet 2–3 days before the procedure
- Bowel cleansing with a laxative the evening before and again on the day of the procedure
- Clear fluids up to 2 hours before the procedure
- Blood-thinning medication adjusted in consultation with the doctor before the procedure
Thorough bowel cleansing is essential to the quality of the examination — you will receive a detailed plan when you book.
Safety and side effects
Colonoscopy is a well-established and safe procedure. Mild bloating afterwards resolves within a few hours. Serious complications such as perforation or significant bleeding are very rare (fewer than 1 in 1,000 procedures).
Private colonoscopy without waiting
At EndoCap you can book a colonoscopy directly — without a referral from your GP. The clinic is led by a consultant surgeon who performs the procedure, removes any polyps and plans further treatment or follow-up. You typically get an appointment within 2 weeks and a written report within 5 working days.