Egg donation is a process where an egg, or oocyte, is removed from a fertile woman and donated to another woman in order to help her conceive. It is a part of assisted reproductive technology, or ART.
Donated eggs are typically fertilized in a laboratory. The resulting embryos are then transferred into the recipient's uterus using a procedure such as in vitro fertilization (IVF).
Alternatively, some or all of the embryos may be frozen for later use, or some may be transferred to other women.
This type of fertility treatment is generally given to women who cannot use their own eggs for various reasons, such as ovarian failure, to avoid genetic defects, or advanced age.
According to the Centers for Disease Control and Prevention (CDC), egg donation has a relatively high success rate. In 2012, over 55 percent of transfers involving fresh embryos from donor eggs resulted in a live birth.