Exams and Tests
To diagnose the cause of your
urinary incontinence, your doctor will ask about your
medical history and do a physical examination,
including a
pelvic exam. Your doctor may ask you to cough while
you are standing to check for stress incontinence. In addition, a
urinalysis and
urine culture may be done to see if you have a
urinary tract infection (UTI).
An
accurate diagnosis is very important, because treatment based on an incorrect
diagnosis may not help your incontinence and could even make it worse.
Your doctor will ask you about your symptoms and habits, for example, how
often you need to urinate, when you leak urine, how much fluid and what kinds
of fluids you drink, and whether you have any other symptoms along with
incontinence. Your answers will provide clues about the cause of your
incontinence.
Ideally, you will bring your doctor a 3- to 4-day
diary of what and how much you drink, and how often
and how much you urinate and leak. The pattern of your urine leakage may point
to the type of incontinence.
View and print a
voiding log
(What is a PDF document?).
Other procedures that
may be done include:
- Bladder stress test and Bonney test. For the bladder
stress test, your doctor will insert fluid into your bladder and then check for
leaking after asking you to cough. The Bonney test is similar to the bladder
stress test except the bladder neck is lifted slightly with a finger or
instrument inserted into your vagina while the bladder stress is applied.
- Pad test. A pad test can show how much urine you are
passing and how often throughout the day. This is helpful when incontinence
cannot be triggered during an exam.
Urodynamic testing
Urodynamic testing
is expensive. It is generally done only if surgery is being considered or if
treatment has not worked for you and you need to know more about the cause. It
provides a more advanced way to check bladder function. Urodynamic testing may
be done if the above tests do not give an answer to why you have leakage of
urine or your health professional suspects that you have mixed incontinence
with more than one cause. The actual tests done in urodynamic testing often
vary. They may include:
- Cystometry (cystometrography, uroflowmetry), which is
a series of tests to measure bladder pressure at different levels of fullness.
Cystometry tests include:
- Leak point pressure (LPP), which measures weakness in the
muscle that holds back urine (sphincter).
- Maximum urethral closure pressure (MUCP), which measures
the pressure keeping the urethra closed naturally.
- Postvoid residual (PVR) measurements and
X-rays or
ultrasound. These are used to examine changes in the
position of the bladder and urethra during urination, coughing, or straining.
If the cause of incontinence is not identified by the
above tests, more extensive tests may be needed. The following tests are not
routinely done to diagnose urinary incontinence.
- Cystoscopy uses a scope to look inside the
urethra and the bladder for abnormalities.
- Voiding cystourethrogram is an X-ray that uses an
iodine-containing contrast liquid to show the shape of the lower urinary tract
(bladder and urethra). This may make visible any physical abnormalities of the
urinary tract that could be contributing to incontinence.