Pudendal nerve function test

What’s the test for?

This test studies the function of your nerves in your pelvic floor which control the muscles in your back passage.

You may be referred for this test if you have been experiencing troublesome bowel problems.

These problems can often be caused by injuries or weakness to the muscles in your back passage or problems with the wall of your back passage (anal canal).

About the procedure

Your physiologist will insert a finger-size probe, with a small electrode on it, through your back passage into your rectum.

It may feel uncomfortable when the probe is inserted, but it should not be painful. You may feel embarrassed, but we understand this and will help you feel at ease throughout.

Once this is in the correct position, a small electrical current will be passed over your nerves causing your pelvic floor muscles to contract, and measurements are taken.

You may feel a pulsing, twitching or prickling sensation in your back passage while we take measurements, which may be a little uncomfortable.

If you are paying for this test yourself and not through private medical insurance, the cost will be £460.

How to prepare

You do not need any special preparation for your test.  You may eat and drink as normal and continue with any normal medication.

What can be learned

This test evaluates the function of the nerves in your pelvic floor which control your muscles in your back passage.

Following your test, your data will be analysed, and results written up into a report. The report will be sent to both you and your referring consultant/doctor, who will explain the results to you in a follow-up consultation.

Information leaflet
Information leaflet

Find more information about this test using our PDF download.


All of the staff were friendly and nice. When I had questions the staff checked on me and made me feel supported. Lovely experience. Everyone had smiles, and they took time to explain and make me feel welcome.

London Patient