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Once the donor eggs have been harvested, they are placed in a culture dish for a few hours while the partner’s sperm is prepared by andrology laboratory.Insemination of oocytes is performed by “microinjection of a sperm into each mature egg” (ICSI), where a sperm is injected directly into each egg.The successful embryos are observed a few days, until the moment that the best quality embryos are transferred to the uterus of the mother.Under Spanish legislation we can transfer up to 3 embryos, but normally are transferred 2 embryos.In vitro fertilization (IVF) with egg donation and partner’s semen is a technique in which donated oocytes are fertilized by partner’s sperm in the laboratory.
IVF with donor eggs is recommended to women who have problems with their ovaries and have to use eggs provided by a donor.
The most common causes are that ovaries are not producing eggs or that the eggs are not of sufficient quality.
We do a selection of the oocytes donor according to physical and immunological characteristics of donor and the receiver.
Spanish legislation requires that egg donation is anonymous, where donor and receiver will not meet each other.
Donors have to undergo a treatment for about two weeks to stimulate their ovaries, administering hormones similar to those produced by the woman herself (gonadotropins).This stimulation is regularly monitored by analyticals and ultrasound scans.