Egg and Embryo freezing is used during fertility procedures for a variety of reasons. When there are extra embryos during the IVF process, high quality embryos can be frozen. Egg freezing is done for a variety of reasons, including fertility preservation after the diagnosis of cancer, but also for social reasons. Crystal formation during conventional freezing has always limited the success of freezing embryos and eggs. The egg in particular is very vulnerable to the damage that can occur during the conventional slow-freeze process, making pregnancy rates poor. Embryos are more sturdy in this regard, but still have only about half the pregnancy rates that the fresh IVF embryo would provide. This is all changing.
In the last little while, new technology called Vitrification provides the ability to freeze eggs and embryos with a much higher degree of success. In this process, the tissue undergoes a controlled plunge into liquid nitrogen, within a protecting solution. The thaw process permits excellent cell recovery, and in several trials, the survival rates of embryos is up to 15X higher versus older techniques. This superior method permits multiple new fertility treatments such as high performance egg freezing, embryo biopsy for genetic screening, and a myriad of other benefits.
For more information on Vitrification, call us today.