The first pregnancy using cryopreserved embryos was obtained in 1980.
If after IVF treatments good quality embryos are left, the clinic recommends that patients freeze them.
Cryopreservation is recommended if the couple wants to have another baby or if the current IVF attempt is unsuccessful.
The embryos are frozen by vitrification method and stored in liquid nitrogen at –196 ° C.
The rate of effectiveness of pregnancy after thawing is about 20-30%
It is recommended to store embryos for up to 5 years.