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Donor embryos

IVF helps overcome many forms of infertility, including combined infertility, i.e. masculine and feminine at the same time.

If the biomaterial of both partners is not suitable for fertilization, but the woman is able to carry and give birth to a child on her own, reproductive specialists use donor embryos for in vitro fertilization. Despite the lack of a genetic connection, the baby will be with his parents from the moment of conception, which means they will wait for him with impatience, love and joy, as if they were their own. In fact, by the time he is born, he will become like this - a pregnancy experienced together will unite the family. IVF with a donor embryo is also done for single women who do not have their own healthy eggs.

Number of donors in the section: 28

A little about embryos and IVF

An embryo is a human embryo, its initial stage of development. 16–18 hours after IVF (fusion of eggs and sperm in vitro), pronuclei (zygotes) are formed. They divide and turn into embryos after 48 hours. Ideal embryos have 4 equal-sized mononuclear blastomeres (cells) without fragmentation; they are preserved for cultivation. After 72 hours, reproductive specialists evaluate the preserved embryos by the number of blastomeres (should be 6–8), their evenness and the presence of fragmentation. At this point, the embryos are ready for implantation, but usually they are cultured for another 24 hours (grown to the morula stage), and transferred or frozen on the 5th day at the blastocyst stage. Education is assigned letter and numerical grades, for example: BL5AA.

How are donor embryos obtained?

Donor eggs and donor sperm are used to obtain embryos. Fertilization occurs in a Petri dish. The doctor tracks the process by observing it through a microscope. Typically, 5 to 7 donor eggs are fertilized at once (some of them, for some reason, will not be fertilized or will produce a zygote of inadequate quality). The embryos are cultured for 5 days and then cryopreserved, i.e. frozen. Currently, veterification is used - a method of rapid freezing, in which the liquid contained in the tissues of the embryo does not harden, but becomes glassy (thus, the embryo is not damaged by sharp ice crystals). Vitrified embryos are numbered and transferred to Embrybank, where they are stored in Dewar flasks at temperatures below 190 degrees Celsius.

Advantages of using donor embryos:

  • the waiting time for implantation is reduced;
  • free choice of implantation window (exact time of transfer);
  • carrying out PGS on chromosome 24, as well as a biopsy of the trophectoderm of the blastocyst to exclude genetic pathologies;
  • careful step-by-step selection (selection) of embryos increases the efficiency of IVF;
  • a ready-made donor embryo is cheaper than one cultured from eggs and sperm from individually selected donors.
  • after thawing, up to 99% of ready-made donor embryos survive.

How to choose a donor embryo for IVF

Donor embryos are presented in the catalog on the Embrybank website. You can gain access after registering on the site. Donors are selected by Embrybank specialists, and IVF and embryo cultivation are performed by reproductive doctors from the Embrylife St. Petersburg Center for Family Planning and Human Reproduction. The Bank's clients receive complete information about donors (type of appearance, hair and eye color, height, weight, education, etc.), which allows them to make a fairly accurate forecast of what the baby will look like, what features and qualities he will be most is likely to inherit from each of the donors.

If ready-made embryos for some reason do not suit you, then you can independently choose an egg donor and a sperm donor (you can go to the corresponding catalogs using the links).

Donor embryos and legal practice

The use of donor biomaterials for IVF in Russia is permitted and regulated by law. The purchase of donor embryos at Embrybank occurs confidentially and on conditions of anonymity. When registering a child with the civil registry office, the fact that IVF was performed with donor material does not matter (medical confidentiality). The mother is the woman who gave birth to him, and the father is her husband or partner (if he has one).

Neither parents nor donors receive each other's personal information. In addition, donors are not provided with information about the use of their biomaterial.