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Thorough examination of the entire large bowel, performed personally by Dr Deepak Kejariwal, Consultant Gastroenterologist, at Cobalt Hospital, usually within one to two weeks of your enquiry.
What is a colonoscopy?
Colonoscopy is a procedure used to examine the inner lining of the entire large bowel using a thin, flexible camera, known as a colonoscope, passed gently through the rectum, and it remains the gold-standard way of identifying and treating conditions of the large bowel. It allows Dr Kejariwal to identify and, where needed, treat conditions such as polyps, inflammation, bleeding, or early signs of bowel cancer, and to take biopsies for further analysis. Current NHS guidance confirms that a colonoscopy usually takes 30 to 45 minutes and is offered both to investigate symptoms and as a follow-up test after an abnormal bowel screening result (NHS, 2026).
Patients across Newcastle upon Tyne, Durham, North Tyneside, Gateshead and Sunderland choose Dr Kejariwal for colonoscopy given his 18+ years of consultant experience. Colonoscopy is commonly recommended to investigate symptoms such as a change in bowel habit, rectal bleeding, abdominal pain, or unexplained weight loss, as well as for bowel cancer screening and surveillance following previous polyps or a family history of bowel cancer. Where only the lower bowel needs examining, a shorter flexible sigmoidoscopy may be a suitable alternative, which Dr Kejariwal can advise on at consultation.
Colonoscopy versus other tests
Colonoscopy is generally considered more accurate than alternatives such as CT colonography, because it allows both direct visual inspection of the entire large bowel and, crucially, the ability to take biopsies or remove polyps during the same procedure. While CT colonography avoids the need for sedation, it cannot treat anything it finds, meaning a colonoscopy is usually still required afterwards if an abnormality is detected. For most patients being investigated for bowel symptoms in 2026, colonoscopy remains the single most useful and definitive test available.
Preparation
Good bowel preparation is essential for a clear, accurate examination. You will be given a bowel-cleansing solution to take at home the day before your procedure, along with dietary guidance for the preceding two to three days, gradually moving to clear fluids only. Full written instructions are sent with your appointment confirmation, and the team is on hand to answer any questions beforehand.
What happens on the day
01
Arrival & preparation
Check in at Cobalt Hospital day unit, where the team confirms your consent, reviews your bowel preparation, and discusses sedation options with you.
02
The procedure
Colonoscopy usually takes between 20 and 45 minutes. Dr Kejariwal personally examines the full length of the large bowel, removing any polyps found and taking biopsies where appropriate.
03
Recovery
A period of rest in the recovery bay follows, with additional time if sedation has been given. You will need someone to accompany you home if sedated.
04
Results, the same day
Dr Kejariwal discusses his findings with you before you leave, with a written report sent to you and your GP, and biopsy or polyp results typically available within one to two weeks.
Risks and safety
Colonoscopy is a safe, well-established procedure with a strong safety record. Possible risks include bloating, mild abdominal discomfort, or a small risk of bleeding, particularly following polyp removal. Bowel perforation is rare, occurring in around 1 in 1,700 procedures according to NHS data. Dr Kejariwal will explain all relevant risks and answer any questions during your consultation, so that you feel fully informed and confident before proceeding.
Your results
Findings are explained by Dr Kejariwal on the day of your procedure, including details of any polyps removed. A written report is sent to you and your GP, and where samples have been taken for laboratory analysis, results are typically available within one to two weeks, along with a clear plan for any follow-up care.
Frequently asked questions about colonoscopy
What is a colonoscopy used for?
A colonoscopy is used to examine the entire large bowel for polyps, inflammation, bleeding or early signs of cancer, and allows biopsies or polyp removal to be carried out during the same procedure.
Is colonoscopy painful?
Most patients experience some pressure or bloating rather than pain, and sedation is available for those who would prefer to be more relaxed during the procedure.
How long does bowel preparation take?
Bowel preparation typically begins the day before your procedure and involves dietary changes plus a prescribed cleansing solution, taking most of the day and evening beforehand.
What happens if a polyp is found?
Most polyps can be safely removed during the same colonoscopy procedure and sent for laboratory analysis, avoiding the need for a separate appointment in most cases.
How often should I have a colonoscopy?
This depends on your individual risk factors and any previous findings. Dr Kejariwal will recommend a personalised surveillance schedule where relevant.
Usually seen within 1-2 weeks
Referral routes: GP, self-referral or insurer. Bupa recognised, fee assured.
Related treatments
- Flexible sigmoidoscopy
- Polypectomy
- Bowel cancer screening
- Gastroscopy
Common questions
- What is a colonoscopy used for?
- Is it painful?
- How long is bowel preparation?
- What if a polyp is found?
About Dr Deepak Kejariwal
Consultant Gastroenterologist & General Physician, FRCP, with 18+ years of consultant experience in gastroenterology and endoscopy, including colonoscopy. Serving Newcastle upon Tyne, Durham, North Tyneside, Gateshead and Sunderland.