Kidney and Urinary Tract Q&A
This section provides a numbered list of frequently asked questions for kidney ultrasound scans, compiled from the available data.
- What is a kidney ultrasound scan? A kidney ultrasound, also known as a renal ultrasound, is a safe, non-invasive imaging procedure that uses high-frequency sound waves to create real-time images of your kidneys, bladder, and the ureters (the tubes connecting the kidneys to the bladder). It is used to assess the size, shape, and structure of these organs and to investigate a wide range of symptoms.
- Why would my doctor recommend a kidney ultrasound? A kidney ultrasound is often recommended to investigate symptoms such as persistent lower back or abdominal pain, blood in the urine, recurrent urinary tract infections (UTIs), or difficulty urinating. It is an excellent tool for diagnosing and monitoring various kidney and urinary tract conditions.
- What conditions can a kidney ultrasound detect? A kidney ultrasound is highly effective at detecting common conditions, including:
- Kidney stones: It can show the presence, size, and location of stones.
- Cysts or tumours: It can help distinguish between a simple, benign fluid-filled cyst and a more complex solid mass.
- Hydronephrosis: Swelling of the kidney due to a blockage in the urinary tract, which prevents urine from draining.
- Infections and abscesses: It can reveal signs of inflammation or a collection of pus.
- Structural abnormalities: It can assess for congenital abnormalities or changes in kidney size.
- Do I need a referral from my GP? A referral from your GP is not required to book a private kidney ultrasound. You can self-refer and schedule an appointment directly, which offers you immediate access to a scan and a quicker diagnosis without needing to wait for an NHS referral.
- How do I prepare for a kidney ultrasound scan? Preparation is essential for this type of scan. You will typically be asked to drink a few glasses of water and not empty your bladder for about an hour before your appointment. A full bladder provides a clear window for the sonographer to view the bladder and surrounding structures. You should also wear comfortable, two-piece clothing for easy access to your abdomen.
- Is the procedure painful? No, a kidney ultrasound is a painless and comfortable procedure. A clear, warm gel is applied to your skin, and a handheld probe is gently moved over your abdomen. You may feel a little pressure, but there is no discomfort or pain involved.
- How long does the scan take? The scan itself is quite fast, typically taking between 15 and 30 minutes to complete. This includes the time needed to get comfortable, perform the scan, and for the sonographer to provide a preliminary summary of the findings.
- Will I receive my results on the same day? The sonographer will be able to give you an immediate verbal summary of their findings after the scan. A written report will then be sent to you via email, usually within a few hours that day.
- How much does a private kidney ultrasound cost? The cost of a private kidney and bladder ultrasound scan is £197. See our price list for more information
- What is the difference between a kidney ultrasound and a CT scan? A key difference is that an ultrasound uses sound waves and no radiation, making it a very safe option. A CT scan uses X-rays and is more effective at detecting very small kidney stones (less than 5mm) and providing a higher level of detail for surgical planning. An ultrasound is often the first and preferred diagnostic tool, and a CT scan may be used for a more definitive diagnosis if needed.
- Can a kidney ultrasound show early signs of kidney damage? Yes, a kidney ultrasound can be a valuable tool for assessing kidney health and can reveal early signs of damage. It can show changes in kidney size, structure, and texture, as well as the presence of any blockages or cysts that may be impacting kidney function.
- What if the scan reveals an abnormality? If an abnormality is found, the radiologist’s report will provide a detailed description and will often include recommendations for the next steps. This may involve follow-up with your GP, a consultation with a specialist (such as a urologist), or a recommendation for further imaging like a CT scan or MRI.