Donor Egg IVF involves using the eggs from an anonymous or known donor in conjunction with an IVF cycle. The donor undergoes controlled ovarian stimulation to create numerous eggs, which are retrieved and fertilized with the recipient partner's sperm in the laboratory. The donor recipient's cycle is synchronized with medications so that her endometrium will be prepared to accept the embryos at the appropriate time. After incubation in the laboratory for about 5 days, the mature embryos are then transferred to the recipient's uterus.
Adopted embryo(s) FET utilizes surplus embryo(s) that have been "adopted" in a similar manner to traditional child adoption. When couples use in vitro fertilization to achieve pregnancy, they will often have embryos remaining after they complete their family. Embryo adoption allows the family with remaining embryos to select a recipient family for their embryo gift. The adopting family is able to use the donated embryos to achieve a pregnancy and give birth to their adopted child.