Flow Rate Test

What is a Flow Rate Test?

This test records the volume and rate of urine that you pass. You will be asked to pass urine into a special machine in a private room or toilet cubicle. For the most successful measurement to be taken, your bladder will need to be full and you must feel that you need to pass urine urgently.

What is a Bladder Scan?

After your Flow Rate Test, it may be necessary to scan your abdomen to find out if your bladder is emptying completely or has retained some urine. This is a painless procedure. You will be asked to lie down on a couch and lift your upper clothing. A small amount of water-based gel is then applied to your abdomen and an ultrasound scanner is used to obtain a picture of your bladder on a screen. Any urine left in the bladder is shown on the screen and the amount can then be calculated.

Are there any risks or side-effects involved?

There are no side effects or pain with either of these tests and you can go back to normal activities immediately afterwards.

What do I need to do before I arrive for the tests?

You can eat as normal before the tests. However, you will need to arrive for your appointment with a full bladder in order to undertake the Flow Rate Test. If you cannot travel to the appointment with a full bladder, please arrive in advance of your appointment and bring water to drink in the waiting room.