CAN LEFT OVER EMBRYOS THAT ARE NOT TRANSFERRED BE FROZEN ?
Once the eggs, embryos or the sperm are frozen, they can be kept indefinitely in the liquid nitrogen. The quality of the gametes does not change by freezing process. We have put embry back after 15 years freezing and produced a healthy baby. But in practice we keep frozen gametes for only five years. The reason for the limited period is, the socioeconomic circumstances change and you may no longer want your gametes frozen. It is necessary you constantly keep in touch with the Centre and pay the appropriate annual fees for safe keeping of your gametes.
