Freezing and storing human reproductive cells, commonly known as “banking,” has been around for many years. It started with sperm, followed by embryos. However, freezing eggs (oocytes) took longer to perfect because eggs are more delicate and harder to freeze successfully.
Recently, a new technique called vitrification has transformed the process. Vitrification, which is like freeze-drying, has largely replaced the old “slow freeze” method that was used with embryos and, less effectively, with eggs. Thanks to advancements in vitrification over the last decade, freezing and thawing eggs has become much more successful.
While there will likely be further improvements in areas like vitrification, shipping, thawing, and insemination, the current outcomes for frozen eggs are now comparable to fresh ones.
In October 2012, the American Society for Reproductive Medicine (ASRM) officially recognized egg freezing as a viable procedure, removing the “experimental” label after proving it could achieve reliable success rates. This led to wider availability of egg freezing, helping women preserve their fertility for future use. Additionally, it sparked interest in frozen donor egg banks, which provide an important option for intended parents needing egg donation. One of the fastest-growing areas in egg banking is egg donation, where the process offers many benefits.