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A CT KUB is a low-dose CT of the kidneys, ureters and bladder used to find kidney stones. Learn how it works, how to prepare and how Medicare applies.
Also called: CT KUB, kidney stone CT, CT kidneys ureters bladder, CT for kidney stones, renal colic CT
Find a clinic for your CT KUB
91 clinics offer bulk billing for CT scan — eligibility varies
Where to get a CT KUB
92 clinics across Melbourne and Victoria on Radly offer CT scan.
Clinics for a CT KUB on Radly
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What is a CT KUB?
CT KUB stands for kidneys, ureters and bladder. It's a non-contrast CT designed to find kidney stones, show their size and position, and check whether a stone is blocking the flow of urine.
It's quick and usually uses a lower radiation dose than a standard abdominal CT. No injection or drink is needed — stones show up well on their own. You lie on your back and hold your breath for a few seconds.
Why your doctor might request a CT KUB
- Sudden severe flank or loin pain (renal colic)
- Blood in the urine with suspected stones
- Follow-up of known kidney stones
- Planning stone treatment
CT KUB: preparation, referral & Medicare
Preparing for your CT KUB
- No fasting or contrast is usually needed
- Some clinics ask you to have a comfortably full bladder
- Remove belts and clothing with metal
- Tell staff if you are, or might be, pregnant — ultrasound may be preferred
How long it takes: About 10–15 minutes
Referral, Medicare & bulk billing
A CT KUB needs a referral, which a GP can provide. With a valid referral it attracts a Medicare rebate, and many clinics bulk bill some CT — it varies by clinic. If you have severe pain with fever, vomiting or you can't pass urine, go to an emergency department. The clinic will confirm billing for your referral. Booking through Radly sends a request, and the clinic confirms the time with you.
How it works
Get your referral
Most scans need a referral from your GP, specialist, or other health practitioner.
Compare clinics
Find clinics near you for your CT KUB and compare bulk billing, reviews, and location.
Send your request
Share your preferred timing and send the clinic your details and referral when available.
Clinic confirms
The clinic reviews your request and confirms your appointment and any preparation needed.
If the clinic hasn’t acknowledged your request after 24 hours, Radly will follow up. We check in by SMS during daytime hours where SMS is available and you haven’t opted out. Reply N if you haven’t been contacted and our team will follow up. Acknowledgment does not mean an appointment is booked.
CT KUB FAQs
Do I need to fast for a CT KUB?
Usually not. Some clinics ask for a full bladder. The clinic will confirm.
Is CT or ultrasound better for kidney stones?
CT KUB is the most accurate test for stones. Ultrasound has no radiation and is often used in pregnancy, in children or for follow-up.
Is a CT KUB bulk billed?
Many clinics bulk bill it with a valid referral, but it varies. The clinic will confirm.
How do I book a CT KUB online?
Choose a clinic on Radly, select CT Scan as your scan, add your preferred timing and attach your referral, then send your booking request. The clinic contacts you to confirm the appointment and any preparation.
How soon can I get a CT KUB?
Appointments for CT scan are usually 1–4 days, depending on the clinic and the exam. You can send a request on Radly at any time, and the clinic replies with its next available time.
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