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Egg donation is procedure where an anonymous donor gives her oocytes to a woman who wants to become a mother but can´t with her own eggs. The donor (between 18- 35 years old) offers her eggs altruistically to another woman who, for reasons of age, previous surgery, previous chemotherapy or radiotherapy treatments, amongst other causes has not been able to conceive with her own eggs because of their lack of quality or quantity.
How is egg donation programmed?
Once the donor’s test results are have come back and the donor has been deemed fit to donate, the recipient and the donor start preparing for the cycle. Both donor and recipient are put on the birth control pill in order to sync their cycles. If the egg recipient still has her period, she is administered an injection to supress her own ovarian function. This is necessary so that the recipient does have hormone peaks at the wrong time during the fresh cycle. In this way, the endometrium will be in optimal condition to receive the fresh embryos.
At this point, we prepare the recipient’s endometrium with estrogen administered either orally or transdermally. During the preparation we do one or two ultrasound scans to confirm that the endometrium is at its appropriate thickness and is ready to receive the embryos for implantation.
On the day of the donor retrieval, the recipient’s partner gives us a sperm sample so that the microinjection of sperm into the donor eggs can be performed. Sometimes a sperm sample has been frozen prior to the egg retrieval and is used that day. The following day the laboratory calls the recipient with the information about how many mature eggs she received and how many fertilized eggs there are.
Who are the donors?
Donors are healthy, psychologically stable young women who have been tested for infectious and genetic diseases. ProcreaTec follows Spanish legislation that only permits anonymous egg donation. (Law 14/2006 from 27th May 2006, Law for Assisted Human Reproduction Techniques).