There is no special preparation for this test. 

There is a consent form for this examination outlining the preparation, procedure, possible complications and aftercare. You will be asked to read through this, asked questions to ensure you are happy to continue with the procedure and lastly to sign the consent form.

A small plastic catheter (thin plastic tube) is inserted carefully into the bladder through the urethra using a lubricant. This can be uncomfortable for the brief time during insertion of the catheter. 

Once the catheter has been inserted, a liquid containing iodine (which shows up on the x-rays to provide a clear image or picture of the area) is then dripped through the catheter and into the bladder so that the bladder can be seen on the X-ray images. 

Once the bladder is filled, you will be asked to empty your bladder while x-ray images are being taken to show how the urethra is working.

Once the Radiologist has acquired the necessary images, you may go home. 

The radiologist will review the pictures and provide a written report to your referring doctor. The digital images will be available online (internet) for your doctor to view. The Radiologist may be able to give you a verbal result at the end of the examination. 

You can eat and drink normally. 

The contrast media is clear so it will not be noticeable in your urine. You may notice spotting when you urinate; this may be due to the small tube scratching inside wall of your urethra. This should only last a small time, but if you are concerned please contact your referring doctor.