IVF & IUI
FET uses either a natural cycle timed to your own ovulation or a medicated cycle with oestrogen and progesterone to prepare the lining. Vitrification means survival rates after warming are now very high. FET allows OHSS risk to settle, fits genetic testing timelines and separates the retrieval from the transfer.
Also known as: FET, frozen transfer, thaw cycle
Related Canada guides
Sources
- Canadian Fertility and Andrology Society (CFAS)
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.