Frozen Embryos

Thawed embryos may be replaced during a natural cycle (without drugs) or in a cycle primed with hormone supplements. Depending on your medical history and age, your fertility specialist will discuss which is the most suitable course of action for you and this will be detailed in your treatment plan.

Use of Fresh Embryos

A fresh embryo transfer normally takes place five to six days following egg collection once the embryo has reached what we call the “blastocyst stage”.
Many women will opt to only having one embryo transferred to avoid the risk of multiple pregnancies. The embryo transfer is a simple procedure in which a speculum is inserted into your vagina (similar to a smear test procedure), and a catheter holding the embryo will be inserted into the uterus.

Spare embryos

Any good quality spare embryos left over from your treatment cycle can be frozen and stored for future use either if your treatment is unsuccessful or for a sibling. When you are ready to use your frozen embryos, your fertility specialist will plan a Frozen Embryo Transfer.

Success rates

Success rates for women who are generally in good health, are good, although success – as in IVF – depends on the woman’s age and the quality of the thawed eggs which differs from person to person. Egg freezing is still a relatively new procedure and the number of women coming back to thaw their frozen eggs is small so it’s tricky to measure.


There are several factors relating to the cost of the treatment, this will depend on your bespoke treatment and whether you opt for single egg freezing or a cycle package which will be discussed during your consultation with your fertility specialist. In addition to the freezing process itself, other charges are applicable such as for medication & future storage. For more information on pricing please book a consultation or alternatively please call our clinic for further advice, a member of our team will be more than happy to help.

For more information, please arrange an appointment with Queen’s Clinic by phoning us on 020 7935 5540 or by booking online via our online booking form