Procedure guide · 6 min read
Flexible cystoscopy and outpatient diagnostics
A flexible cystoscopy is the standard test for looking inside the bladder. It is an outpatient procedure performed under local anaesthetic gel, takes only a few minutes, and is the most reliable way to investigate visible blood in the urine, recurrent infections, persistent bladder symptoms or to follow up after bladder cancer treatment.
Why diagnostics matter
Many urinary symptoms feel similar from the outside but can have very different causes. A careful pathway — urine tests, imaging, flow studies and a direct look — produces a clear diagnosis quickly, so treatment is targeted and unnecessary investigations are avoided.
What flexible cystoscopy involves
You will be asked to empty your bladder, then a soothing local anaesthetic gel is placed in the urethra. A thin flexible scope is then gently passed into the bladder. Mr Rajpal will look at the urethra, prostate channel and the entire bladder lining. The procedure usually takes five to ten minutes. You will see the images on the screen and can ask questions throughout.
Other outpatient diagnostics
- Ultrasound of kidneys and bladder: looks for stones, hydronephrosis, masses and post-void residual urine.
- Uroflowmetry: measures the strength and pattern of your urinary stream.
- Bladder diary: a 3-day record of fluid intake, output and urgency — surprisingly useful.
- Urodynamics: a more detailed pressure study for complex bladder problems.
- PSA, urine cytology and MRI: arranged where prostate or bladder cancer is being assessed.
What it is used to investigate
- Visible or microscopic blood in the urine.
- Recurrent urinary tract infections.
- Bladder pain, persistent urgency or unexplained voiding symptoms.
- Surveillance after bladder cancer treatment.
Before and after the appointment
No fasting is needed. Drink normally beforehand. After the procedure you can eat, drink and drive. You may notice mild burning or a trace of blood for 24–48 hours; drink plenty of water to flush the bladder. Antibiotics are not usually required unless there is a specific reason.
Risks
Flexible cystoscopy is very safe. The main issues are short-lived stinging when passing urine and a small chance of urinary tract infection. Significant bleeding or injury to the urethra is rare. If results show something that needs treatment, Mr Rajpal will discuss the next step at the same visit and arrange any follow-up procedures separately.
When to seek help
- Fever, shaking chills or worsening pain after the procedure.
- Inability to pass urine.
- Heavy or persistent bleeding more than 48 hours afterwards.
Further reading from BAUS
The British Association of Urological Surgeons publishes peer-reviewed patient leaflets that go into more detail than this overview.
This guide is for general information only and is not a substitute for individual medical advice. If symptoms are severe or urgent, contact NHS 111, your GP, or attend A&E.