Egg banking is an assisted reproductive technology procedure in which multiple eggs are retrieved from a woman following hormonal hyperstimulation. Although similar to embryo banking, the eggs are not fertilized prior to cryopreservation. Thus, this is a good option for women who do not have a male partner and who do not want to use donor sperm. Although this relatively new technology is successful, it is still considered experimental. The process of egg banking can take up to one month to complete.