Frozen Embryo Transfer

What is a frozen embryo transfer?

A frozen embryo transfer (FET) is a cycle where a frozen embryo from a previous fresh IVF cycle is thawed and transferred back into a woman's uterus. This means you won't have to undergo another cycle of hormone stimulation and egg collection.

Freezing embryos, also known as cryopreservation, takes place for some 60% of all patients having IVF treatment – and frozen embryo transfers accounts for around 50% of all IVF births in our program.

Frozen Embryo Transfer

Why do we freeze embryos?

Embryo freezing gives you more opportunities for a pregnancy for each hormone stimulation cycle and egg collection.

During a fresh IVF cycle, we’ll sometimes be able to create more than one embryo, however there are serious risks associated with multiple pregnancies, so generally we won’t transfer more than one embryo at a time. We’ll usually recommend transferring one, and freezing the others. If you do not become pregnant in that first cycle, we can transfer another embryo during a frozen embryo transfer cycle.


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