ultrasound kub (kidneys, ureters, and bladder)
ImagingNone (imaging) sampleEst. 24h
Ultrasound KUB (Kidneys, Ureters, and Bladder)
Ultrasound KUB images the kidneys, ureters, and urinary bladder using sound waves. It helps evaluate urinary symptoms, kidney stones, bladder changes, obstruction, and other urinary tract concerns.
Sample
None (imaging)
Results
Est. 24h
Prep
Check details
Follow-up
Optional add-on
What this test detects
Kidneys
Ultrasonography
Sonologist's descriptive report
Ureters and urinary bladder
Ultrasonography
Sonologist's descriptive report
Bladder volume or retained urine when requested
Full-bladder and post-void imaging
Sonologist's descriptive report
When to get this test
Urinary symptoms
Helps evaluate burning urination, frequency, difficulty urinating, or blood in the urine.
Kidney stones or obstruction
Looks for stones, swelling, blockage, or structural changes in the urinary tract.
Flank or pelvic pain
Supports clinician review when pain may be related to the kidneys, bladder, or urinary tract.
How to prepare
01
Drink water before the scan and keep a full bladder.
02
Do not urinate before your appointment unless clinic staff tells you to.
03
No fasting required unless your doctor gives separate instructions.
04
Wear comfortable clothing that allows easy access to the lower abdomen.
Common questions
What does KUB mean?
KUB stands for kidneys, ureters, and bladder. The scan focuses on the urinary tract.
Do I need a full bladder?
Yes. A full bladder helps the sonologist see the bladder and nearby urinary structures more clearly.
Is it painful?
No. The scan is non-invasive and usually painless. You may only feel light pressure from the ultrasound probe.
Does ultrasound use radiation?
No. Ultrasound uses sound waves, not radiation.