Diagnosis of urinary incontinence

Patient questionnaires

The doctor may ask you to fill out a questionnaire to better understand your symptoms and how they affect your everyday life. Questionnaires can also be used to monitor your symptoms over time, so you may need to fill them out more than once.

Bladder diary

Your doctor may ask you to keep a bladder diary for a few days. Here you will note down how much you drink, how often you urinate, and how much urine you produce. The bladder diary is important because it helps your doctor to understand your symptoms better.

Urine test

You will need to give some of your urine for testing. The test will show if you have a urinary tract infection.

Assessment of residual urine

  • Residual urine is the amount of urine that is left in the bladder after urinating. It is also known as post-void residual urine (PVR). It can be measured with the help of a catheter or an ultrasound.
  • Residual urine can worsen incontinence and may point to other urological conditions, such as a urinary tract infection. It can also help your doctor to better understand the causes of your incontinence.

Pad test

During the pad test, your doctor asks you to wear an absorbent pad. Usually, the test lasts between 1 and 24 hours. You have to weigh the amount of urine absorbed by the pad. Your doctor will explain in detail how to perform the test. A pad test is not always easy to do, and your doctor will need your full cooperation.

Urodynamic evaluation

A urodynamic test is done to get more information about your urination cycle and how your bladder muscles work. There are several urodynamic tests which your doctor may use to better understand your condition. These include uroflowmetry and invasive urodynamic tests. Urodynamic evaluation is usually not done during the assessment for urinary incontinence.


This is a simple urodynamic test which electronically records the rate of urine flow. It is easily done in privacy at the hospital or clinic. You will urinate into a container, called a uroflowmeter (Fig. 3). This test helps your doctor to check whether there is any obstruction to the flow of urine out of the bladder.

Invasive urodynamic tests

If you are scheduled to undergo surgery for urinary incontinence, an invasive urodynamic test may be done, especially if it is not the first surgery in your abdomen. The test may also be needed when your diagnosis is uncertain.

During an invasive urodynamic test, your doctor or nurse inserts catheters in your urethra and rectum to measure the pressure in your bladder and abdomen. In some cases, the bladder is slowly filled with sterile water through the catheter in the urethra. This is done to simulate the filling of the bladder with urine. When your bladder is full, you will urinate into a uroflowmeter. This test is called a filling and voiding cystometry.

The test results are shown on a screen which is connected to the catheters. Sometimes the test has to be repeated to get accurate results but the catheters will already be in place for the second test.


For this test, the doctor can look inside the urethra and the bladder with the help of a small camera. Cystoscopy is not a common test during initial assessment for urinary incontinence. It may be needed when you suffer from other symptoms, such as blood in the urine. Like urodynamic evaluation, it may be carried out if your diagnosis is unclear.


The doctor or nurse may scan your urinary tract with ultrasonography (also known as ultrasound). This technique uses high-frequency sounds to create an image of your bladder or other parts of the urinary tract. Imaging is not a common test during the initial assessment for incontinence.