How many embryos will be thawed for my FET?

This depends on when your embryos were frozen and how many you’d like to have transferred. If they were frozen on day two, three, five or six, we’ll thaw just enough to reach that number, as they’ve already developed to a stage where we can assess their quality before transfer.

If your embryos were frozen at an earlier stage, such as day one, they still need time to develop after thawing. In this case, we usually thaw twice the number you’re hoping to transfer, to give the best chance of having suitable embryos ready on the day.

Our embryologists use advanced techniques to protect your embryos throughout the process, and currently around 80% survive thawing at Bourn Hall Fertility Clinic.