Before beginning IUI treatment, the best quality sperm are selected. They are then inserted into the womb at the woman’s most fertile time, when an ovary releases an egg (ovulation).
Stimulated IUI may increase your risk of a multiple birth because, when fertility drugs are used, a greater number of eggs may be produced than with a natural cycle. And unlike IVF, the clinic does not control the number of embryos that can develop, although they can monitor what happens.
If you are young, healthy and have a good chance of conceiving with stimulated IUI, your risk of having twins or more may be over 20%.
If you are undergoing stimulated IUI, you should discuss the following with your clinician:
For more information about IUI - visit the HFEA website
Are you going through fertility treatment and want to know more about the risks of multiple births? The Infertility Newtork UK (INUK) have published a factsheet that addresses a number of common concerns and questions that fertility treatment patients have.
Download the factsheet (pdf 116Kb)
The procedure for SET is the same as that for conventional IVF or ICSI (in vitro fertilisation or intra-cytoplasmic sperm injection) – the only difference is that only one embryo is transferred.