Diagnostic Test
Diagnostic Endoscopy (Flexible Cystoscopy)
A quick, gentle internal check of your bladder using a thin, flexible camera. It’s the most effective way for UK urologists to investigate symptoms like blood in the urine.
Key Takeaways
- A quick, gentle internal check of your bladder using a thin, flexible camera. It’s the most effective way for UK urologists to investigate symptoms like blood in the urine.
- We offer specialist interpretation and related treatments. Book a consultation to discuss your options.
Overview
About Diagnostic Endoscopy (Flexible Cystoscopy)
A flexible cystoscopy is a common, minimally invasive procedure where a specialist looks inside your bladder and "water pipe" (the urethra). They use a very thin, bendy tube equipped with a high-definition camera. Because the instrument is flexible, it moves with the natural curves of your body, providing a much more detailed view of the lining than a standard ultrasound or CT scan.
Test Information
Understanding Your Test
A detailed guide to your diagnostic procedure — from essential preparation and the purpose of the test to safety considerations and what to expect during the process.
The procedure is performed while you are awake in a private outpatient room. After cleaning the area, a local anaesthetic gel is used to numb the passage and act as a lubricant. The urologist then gently guides the bendy camera into the bladder.
Sterile water is used to fill the bladder so the doctor can see every part of the lining clearly. This will create a sensation of needing to go to the toilet, but the feeling passes quickly once the test is finished.
Most people find that the anxiety leading up to the test is worse than the procedure itself. The anaesthetic gel is very effective at numbing the sensation. Men might feel a brief "sting" or pressure as the camera passes through the prostate area—similar to the feeling of needing to pee urgently. Because the camera is flexible rather than rigid, it is significantly more comfortable than the versions used in the past.
Often called the "gold standard" of urology, this test is used when a scan from the outside can't provide enough detail. In the UK, it is the primary way to investigate haematuria (blood in your pee), recurrent infections, or unexplained bladder pain. For those who have previously had bladder tumours, it is an essential tool to monitor the bladder and ensure it stays healthy.
At a glance
Preparation required
- No Fasting: You can eat and drink as normal before your appointment.
- Urine Sample: We will usually ask for a sample when you arrive to ensure you don’t have an active infection before we start.
- Health History: Tell your consultant if you have a heart valve replacement or take blood-thinning medications (like Warfarin, Aspirin, or Clopidogrel).
- Consent: You will have a chat with the clinical team and sign a consent form before the procedure begins.
Risks or considerations
- Stinging: You might feel a slight burn when you pee for the first 24–48 hours.
- Pink Tint: A tiny amount of blood in your urine is normal for a day or two.
- Infection: There is a low risk (about 1 in 50) of developing a water infection; drinking plenty of water after the test helps "flush" the system.
- Difficulty peeing: Very rarely, temporary swelling can make it hard to pass urine. If this happens, you should contact your clinic.
What it can help diagnose
- Bladder Cancer or CIS: Finding small growths or flat areas of concern.
- Urethral Strictures: Identifying scar tissue that might be narrowing your pipe.
- Bladder Stones: Seeing if hard mineral lumps are causing irritation.
- Enlarged Prostate (BPH): Checking if the prostate is squeezing the channel and blocking flow.
- Cystitis: Spotting signs of unusual inflammation or chronic irritation.
Our Commitment
Care you can trust
Every test is delivered to the same standard: senior consultants, a personalised plan, and the safety of an accredited private hospital behind you.
Consultant-Led Excellence
Receive evidence-based treatments delivered by senior NHS consultants in a professional, specialist setting.
Personalised Care Plans
Your consultant will design a bespoke treatment plan tailored to your specific health goals and lifestyle.
Hospital-Grade Safety
We operate within leading private hospitals, adhering to strict CQC safety and technology standards.
A Heritage of Trust
Our partners bring decades of NHS and private experience, successfully managing thousands of patient cases.
Patient Guidance
Frequently Asked Questions
Common questions about this test and what to expect
3 questions
Yes. Because the procedure is done under local anaesthetic and you remain fully awake, there are no dietary restrictions. In fact, we recommend being well-hydrated so that you can easily provide a urine sample before the test and flush your bladder efficiently afterward.
Reviewed 2 Mar 2026
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No. A diagnostic cystoscopy only involves a camera passing through the urinary channel. It does not involve the reproductive organs themselves and has no impact on erections, testosterone levels, or your ability to father children. Any minor discomfort typically resolves within 48 hours.
Reviewed 2 Mar 2026
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It is perfectly normal for your urine to have a pink or light red tinge for a day or two after a cystoscopy. This is usually caused by minor irritation of the urethral lining. Drinking an extra 2–3 glasses of water will help clear this quickly. If you see heavy bleeding or large clots, you should contact the clinic.
Reviewed 2 Mar 2026
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