For oocyte cryopreservation, eggs removed from a woman’s body are not fertilized with sperm to create embryos before being frozen. For this reason, oocyte cryopreservation may be a suitable option for women who do not have a partner, do not want to use donor sperm, or have religious or ethical objections to embryo cryopreservation. Embryo and oocyte cryopreservation both require approximately 2 weeks of daily injections of follicle-stimulating hormone to stimulate the development of eggs. ■