Embryo freezing

Freezing embryos rather than eggs generally gives more predictable outcomes, because fertilisation has already been achieved. It requires a sperm source at the time of freezing, and consent from both people involved for later use — which is why the consequences of a relationship ending should be discussed before you start.

Also known as: freezing embryos, embryo cryopreservation

Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.