Private Ultrasound Scan · Ultrasound types
A private kidney ultrasound scan uses sound waves to produce images of the kidneys and bladder, with no radiation. It shows the size and shape of the kidneys, cysts, swelling caused by a blockage, and many kidney stones, and can measure how well the bladder empties.
Indications
Book online
Appointments at independent centres
No GP referral is needed: you can self-refer and book directly. Written report from a consultant radiologist.
About this scan
Ultrasound imaging uses high-frequency sound waves to create real-time images of the body's internal structures. Unlike MRI and CT, there is no ionising radiation, making it the preferred choice for assessing abdominal organs, pelvic structures, vascular blood flow, and soft tissue masses.
A sonographer applies a small amount of gel to the skin and moves a transducer (probe) over the area. The sound waves bounce back from internal structures to create live images on screen. Most ultrasound scans are painless and take 20–40 minutes. Results are often available immediately, with a written radiologist report typically within 24 hours.
Key facts
The process
The sonographer confirms you've followed any required preparation (fasting, full bladder) and explains the procedure.
A warm gel is applied to the skin. The sonographer gently moves the probe over the area, taking measurements and recording images.
The sonographer may share initial findings with you during the scan. The scan typically takes 20–40 minutes.
A consultant radiologist reviews the images and your written report is delivered to your ScanBook portal within 24 hours.
Before your scan
For abdominal scans: fast (no food or drink except water) for 4–6 hours before your appointment.
For pelvic scans: arrive with a full bladder; drink 1 litre of water 1 hour before and don't urinate.
For thyroid, breast, MSK and vascular scans: no preparation is needed.
Wear loose, comfortable clothing to allow easy access to the area being scanned.
FAQs
Do I need to prepare for a kidney ultrasound?
Usually you will be asked to drink water beforehand and arrive with a comfortably full bladder, so the bladder can be scanned too. The centre will give you the exact amount and timing.
Will an ultrasound show kidney stones?
It shows many stones, and it shows whether a stone is blocking the kidney. Small stones, especially in the tube between the kidney and the bladder (the ureter), can be missed, so a CT KUB scan is the standard test when stones are strongly suspected.
Do I need a GP referral for a kidney ultrasound?
No. You can self-refer for this scan and book directly through ScanBook, without seeing a GP first.
When should I seek urgent care instead?
Severe loin pain with a high temperature or shivering, or being unable to pass urine, needs urgent assessment. Call 999 or go to A&E. Blood in the urine should always be checked by a doctor promptly.
Is ultrasound safe?
Yes. Ultrasound uses sound waves, not radiation, and is completely safe for all patients, including pregnant women and children.
Will I need a full bladder?
Only for pelvic and lower abdominal scans. A full bladder creates an acoustic window for better imaging. For abdominal, thyroid, breast and MSK scans, no bladder preparation is needed.
Can ultrasound detect cancer?
Ultrasound can identify suspicious masses, cysts and structural abnormalities that may require further investigation. It's commonly used to characterise lesions found on physical examination or other imaging.
independent imaging centres. Radiologist report delivered to your secure portal.
