The Leeds Teaching Hospitals NHS Trust


Frozen Embryo Transfer (FET) Cycle


What is the purpose of freezing spare embryos?

The transfer of frozen thawed embryos from your previous IVF cycle gives you another chance at achieving a pregnancy without undergoing a full IVF cycle. Embryos from an IVF cycle where a transfer is medically not appropriate can be frozen so that the clinical problems can be rectified before embryos are transferred.

For example:

  • Patients at risk of Severe Ovarian Hyperstimulation Syndrome
  • Inability to transfer embryos because of obstruction or another abnormality in the cervix (neck of the womb)
  • Patients undergoing this treatment prior to treatment for cancer to store fertility

How is it done?

The embryos are transferred back to the womb after suitable preparation of the lining of the womb. As the embryos already exist, this cycle does not involve stimulation of your ovaries or an egg collection.

Please use the links in the menu below to find out more about the Frozen Embryo Transfer (FET) Cycle.