When a patient resorts to egg donation, this can be done fresh or not. The difference lies in the fact that if a fresh egg donation is performed, it is necessary to synchronize the cycles of the donor and the recipient woman.
In contrast, if the egg donation is not fresh, it means that the eggs obtained from a donor are vitrified. In this way, the donated oocytes remain cryopreserved until they are to be used. At this time, the oocytes are devitrified (warmed) and fertilized with the semen sample.
Read the full article on: What is IVF with egg donation and how much does treatment cost? ( 56).
By Andrea Rodrigo B.Sc., M.Sc. (embryologist), Cristina Mestre Ferrer B.Sc., M.Sc. (embryologist), Elena Santiago Romero M.D. (gynecologist), María Arqué M.D., Ph.D. (gynaecologist), Marta Zermiani M.D., Ph.D. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Rebeca Reus BSc, MSc (embryologist) and Michelle Lorraine Embleton B.Sc. Ph.D. (biochemist).
Last Update: 02/13/2026
