Freezing eggs and storing them is an option for females who have started having periods (menstruation). This involves taking hormones to make your ovaries release eggs (ovulate) before you start treatment. Then, a minor procedure is done to remove your eggs.
The eggs can be frozen without being fertilized (ooctye cryopreservation). Or they can first be fertilized with sperm from your partner or a donor. Freezing fertilized eggs is called embryo cryopreservation.
The eggs or embryos can be stored for many years until you are ready to become a parent. If your unfertilized eggs have been stored, your partner’s sperm can be used to fertilize the eggs.
Preserving eggs takes at least 2 weeks to finish before you start treatment for your illness. This is how long it takes for the hormones to make you ovulate. Your cancer doctor can let you know if it is safe to delay your treatment. In some cases, egg collection can be done after you finish treatment or between different treatments.