Kidneys, Ureter, Bladder (KUB)

An x-ray of the abdomen. An x-ray is a test that uses radiation to take a picture of structures inside the body.

Parts of the Body Involved

Abdomen

Reasons for Procedure

  • To help diagnose the source of nausea, vomiting, pain or other symptoms related to the abdomen
  • To identify suspected urinary system problems, such as a kidney stone
  • To identify a tumor or blockage in the intestine or kidneys
  • To locate a foreign object that has been swallowed
  • To assess whether there is air or fluid in the peritoneal space (the space surrounding the abdominal organs)

Risk Factors for Complications during the Procedure

The following factors can interfere with the clarity of the x-rays:
  • Large amounts of gas or stool in the intestines
  • Excessive peritoneal fluid (fluid from the sac that lines the abdomen)
  • Obesity
  • Large calcified uterine fibroids
  • Dye or barium left from previous tests

What to Expect

Prior to Procedure - You will probably be asked not to eat or drink anything for 4 hours before your exam.

You'll remove your clothes and put on a hospital gown. You'll also need to remove all metal-containing items, including jewelry and watches.

Tell your doctor if you:
  • Have taken any bismuth medications (such as Pepto-Bismol) within the last four days
  • Had a barium contrast media x-ray within the last four days
  • Have an IUD currently inserted
  • Are pregnant or could possibly be pregnant
During Procedure

Outcome

The KUB should help your doctor identify the source of your pain. If these x-rays show a mass, blockage, or other abnormality, you may undergo further testing, which can include:
  • Ultrasound

Call Your Doctor If Any of the Following Occurs

There are usually no reported complications after this procedure