Intravenous urography

"This test visualizes the shape of the kidneys and ureters as well as their correct functioning".


Intravenous urography is a special x-ray examination that involves the injection of iodized contrast into a vein that is removed by your kidneys and allows the study, by means of x-rays, of the kidneys and the excretory tract of urine, ureters (tubes that come out of the kidneys) and the bladder.

The images obtained will be studied by the radiologist, who will send a report to your responsible physician. 

This test will take approximately 1 hour to perform. However, sometimes it may be necessary to stay longer to obtain the late x-rays.

Imagen del icono de la consulta de Segunda Opinión. Clínica Universidad de Navarra

Do you need our help?
Contact with us

When is intravenous urography indicated?

For the scan to be complete and reliable, it is desirable that there be no debris in the colon that overlaps the kidneys.

In the days prior to the exploration, you should not have taken any contrasts or medicines containing barium, bismuth, iodine or other metals.

Most frequent indications of this test:

Do you have any of these diseases?

You may need to have an intravenous urography

How is an intravenous urography performed?

First, an abdominal x-ray is obtained to check that the bowel is clean enough for the test and that there is no gas or intestinal content overlapping on the renal silhouettes.

A venous line is taken and a special contrast is administered that makes the kidneys and urinary system visible to the rays. This will show the radiologist what the anatomical structure of your urinary system looks like and how urine is passed through the urinary tract and into the bladder.

After the injection, x-rays will be taken. You will be asked to hold your breath at some point during the time the x-ray is taken. Once the radiologist has seen your bladder full of contrast, you will be asked to go to the bathroom to urinate and then a final x-ray will be taken with your bladder empty.

It is not a painful procedure although some patients may experience a sensation of heat, cold or a metallic taste after the injection. If you feel nauseated or have difficulty breathing, quickly report this to the technician, nurse or radiologist.

The exam takes about 1 hour. Sometimes it is necessary to stay longer to get the late x-rays.

  • You will try to eat around 2-3 o'clock in the afternoon, taking a diet low in residues: meat, fish, ham, tea and low-sugar juices. You will abstain from bread, milk, fruit, vegetables, legumes and sweets. You should not eat any food during the afternoon and evening.
  • After breakfast and lunch, as well as at 10 o'clock in the evening, you will take two chewed "AERO-RED®" tablets.
  • At around 5pm you will start taking the "EVACUATING SOLUTION" orally at a rate of ¼ of a liter every 10-15 minutes, until you obtain clear, clean, liquid stools. Its effect begins approximately at the time of beginning the preparation and the amount that will be necessary to drink varies between 3 and 4 liters.
  • On the morning of the exam, drink only liquids and do not eat or smoke until after the scan.
  • Before going to the exploration, an "ENEMA CASEN®" will be administered through the anal route, this enema will be exploded and, if it turns out to be dirty, warm water enemas will be applied again until they come out clean.

There is no inconvenience in taking your usual medication unless you are instructed otherwise. If you are diabetic, you should consult your doctor.

The iodized contrasts, on some occasions, can cause allergic reactions, which are mostly banal (nausea, skin rashes, etc.) and exceptionally can be serious (drops in blood pressure, glottis edema, anaphylactic shock, etc.).

If you suffer from allergies of any kind or have had adverse reactions to the contrasts before, you must tell us in advance even if you have done so before, are included in the history in writing or think everyone already knows; it is for your safety.

Where do we do it?


The Department of Urology
of the Clínica Universidad de Navarra

The Department of Urology of the University of Navarra Clinic offers the patient a medical team, composed of first-rate professionals, and state-of-the-art diagnostic and therapeutic means such as the Da Vinci® robotic surgery.

The Department of Urology possesses the certificate of accreditation of the European Board of Urology, a reinforcement of the excellence of the service at the level of care, teaching and research, which in Spain only three hospital centers possess.

Diseases we treat:

Imagen de la fachada de consultas de la sede en Pamplona de la Clínica Universidad de Navarra

Why at the Clinica?

  • A team of top-level professionals trained in international centers.
  • State-of-the-art technology for diagnosis and treatment.
  • In 24-48 hours you can start the most appropriate treatment.