Egg Donation

What is Egg Donation?

In Vitro Fertilisation with donor eggs, or Egg Donation, involves obtaining and fertilising eggs from a donor outside the body of the female who is going to receive them by means of a simple procedure.

The donor eggs will be fertilised using spermatozoids from the patient’s partner or with donor sperm from the Sperm Bank. Once fertilised, a limited number of the resulting embryos will be transferred to the recipient’s uterus where they can continue to develop naturally.

Egg Donation - URE Centro Gutenberg

How Egg Donation works

Egg Donation makes it possible for women to make their dream of motherhood come true when they have no other options.

Egg Donation is an altruistic act, meaning the recipient cannot bring her own donor or choose who her donor will be. Likewise, the donor cannot receive any payment for her donation. For legal reasons, donor anonymity shall be guaranteed under all circumstances.

When is Egg Donation indicated and what are the phases?


Absence of ovarian function


Recurrent miscarriage


Genetic abnormalities which contraindicate the use of own eggs


Previous unsuccessful in vitro fertilisation cycles


Women of advanced age or women in menopause


Premature ovarian failure or poor response to ovarian stimulation in IVF


Selection of the egg donor is a task that always corresponds to the medical team, who guarantee that the selected donor will be as compatible as possible and will resemble the recipient and her family’s physical and immune characteristics as closely as possible. All donors are between eighteen and thirty-five years of age, have the full capacity to act and are in good psychophysical health. In order to ensure their health, all donors undergo thorough medical and gynaecological exams as well as a comprehensive test for genetic markers.

Selection of the donor | URE Centro Gutenberg
Endrometrial preparation - Egg Donation | URE Centro Gutenberg


The recipient’s uterus is prepared using hormone replacement therapy. The treatment process is monitored with ultrasound scans and hormone testing.


Once there are an appropriate number of follicles which have reached the ideal size we will schedule the donor’s egg collection to retrieve the eggs.

The sperm sample, whether from the patient’s partner/spouse or from the Sperm Bank, is processed in the laboratory to select the best spermatozoids. The eggs can be inseminated with spermatozoids using Classic IVF or sperm microinjection (ICSI), which involves injecting one pre selected spermatozoid into the cytoplasm of a mature egg.

The day following egg retrieval we will be able to determine the number of fertilised eggs, or pre embryos. The embryos will remain in conventional incubators for three to five days with CO2 and temperature controls, or in a Time Lapse EmbryoScopeTM incubator. Laboratory staff will be in contact with the patient at all times to keep her informed about embryo development.

Donor egg retrieval and embryo culture | URE Centro Gutenberg
Embryo transfer and pregnancy test | URE Centro Gutenberg


The embryo transfer consists in placing the best embryos inside the uterine cavity by entering through the vagina. It is a painless, outpatient procedure that does not require sedation or hospitalisation. It is carried out in the operating theatre and lasts about ten minutes. Following the procedure the patient will continue taking hormone treatment to favour the viability of a possible pregnancy.

In the event that the patient has additional, good quality, viable embryos, they will be cryopreserved (through a process called vitrification), allowing for a frozen embryo transfer in the future. The pregnancy test can be performed 16 days after the donor’s egg retrieval has taken place.

Clinical Results 2022

Our excellent results are the best letter of introduction to any patient. That is why we collaborate with the registry of the Spanish Fertility Society, and each year we send the results of all our assisted reproduction techniques.

IVF-ICSI | Donor Eggs

CUMULATIVE PREGNANCY RATE PER CYCLE (frozen embryo transfer included)

IVF-ICSI | Donor Eggs


More info

Complete the form or call us at (+34) 952 122 565.

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