Patient Information

Fertility leaflets

Gynaecology Outpatients
Ipswich Hospital
Tel: 01473 704 665


Hysterosalpingo Contrast Sonography (HyCoSy)


What is hysterosalpingo contrast sonography?

Hysterosalpingo contrast sonography (HyCoSy) is an investigation of the cavity of the uterus and the Fallopian tubes. If either the cavity or the tubes are damaged, it may be difficult to become pregnant.

HyCoSy is a screening test and not a diagnostic test. Any abnormalities detected by HyCoSy will need to be confirmed using a diagnostic test such as keyhole surgery (laparoscopy) or uterus inspection (hysteroscopy).

How is HyCoSy done?

You will have a transvaginal ultrasound first. This is a routine gynaecological procedure and does not hurt. A speculum will then be put in your vagina (as for a cervical smear examination) and a small catheter (tube) will then be passed into the uterus through the cervix.

Under ultrasound control, a small volume of fluid will then be passed into the uterus. If the tubes are open, on the ultrasound screen the fluid will be seen passing through the tubes.

The procedure takes about 20 minutes. You may wish to bring a panty liner to wear for going home, as the fluid used for the HyCoSy is rather sticky.

When is HyCoSy done?

You must call 01473 704 665 on the first day of your period to book your HyCoSy procedure. We aim to perform this procedure before day 14 of your menstrual cycle. Please note that we will not be able to do the examination if you are still bleeding from your period or if there is a chance that you may be
pregnant. If you are unsure, please phone us on 01473 704 665.

It is extremely important that you do not have sexual intercourse (protected or unprotected) from the start of your period until the time of your HyCoSy appointment. Failure to follow this advice may result in your procedure being cancelled.

Are there any side effects?

You may experience some discomfort, similar to period pain. Usually a simple pain reliever, such as paracetamol and/or ibuprofen, will alleviate the discomfort. Please take this half an hour before
the procedure. There is a small risk of developing an infection in your pelvis. To prevent this, your doctor will prescribe a course of antibiotics for you to take after the procedure.

Before your HyCoSy

It is essential that a chlamydia swab has been done by your GP within the 12 months before the HyCoSy. We will not book your appointment unless your chlamydia result is visible on our
computer system.

The demand for this service is very high and it may not be possible for your examination to take place during your current menstrual cycle. If you have a regular cycle and we are not able to offer you an appointment in your current cycle, then we will aim to book it for your next cycle. If you do not have regular periods, please call us for advice.

If you have any questions, or would like further information, please contact the clinic on 01473 704 665.




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