The Full Form of KUB is‍ kidneys, ureters, bladder.

A renal ultrasound is a safe and painless test that uses sound waves to make images of the kidneys, ureters, and bladder.

The kidneys are a pair of bean-shaped organs located toward the back of the abdominal cavity, just above the waist. They remove waste products from the blood and produce urine. The ureters are thin tubes that carry the urine from the kidneys to the bladder.

During the examination, an ultrasound machine sends sound waves into the kidney area and images are recorded on a computer. The black-and-white images show the internal structure of the kidneys and related organs.

Doctors order renal ultrasounds when there’s a concern about certain types of kidney or bladder problems. Renal ultrasound tests can show:

• the size of the kidneys
• signs of injury to the kidneys
• abnormalities present since birth
• the presence of blockages or kidney stones
• complications of a urinary tract infection (UTI)
• cysts or tumors