Embryo freezing is accomplished by a process called “vitrification” which is “flash freezing” to remove the water from the embryo and replace it with a solution to maintain the integrity of the embryo. The survival rate after vitrification is greater than 95%.
Vitrified embryos have similar success rates to fresh embryos.
- Fertility preservation
- Genetic testing (CCS/PGS/PGD): embryos must be stored to await results
- Storage of surplus embryos from an IVF cycle
- Delay of embryo transfer for medical or other reasons after a fresh IVF cycle