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It is common to freeze an excess of good quality embryos to provide patients with a “back-up” should the original fresh embryo transfer not result in pregnancy. The process is much easier and less costly than starting an IVF treatment all over again because patients can achieve more than one pregnancy from a single cycle of ovarian stimulation.
Embryo freezing is a very routine part of the IVF process and most patients normally end up with some embryos in storage. Although not all embryos survive the freezing and thawing processes, the survival rate is quite high and those that survive have a normal chance of implanting in the uterus after transfer.
The freezing and thawing processes do not damage the embryo and studies have shown that children born from frozen embryos are not different from children born from fresh embryos.
We store embryos for a period of 10 years.