Oocyte donation is a technique of assisted reproduction in which the ovum is provided by a woman other than the one who is going to conceive

The process of ovodonation

1.Obtaining the oocytes

First, the donor is selected based on purely medical criteria, and the cycles of both are synchronized. The donor will be in which the ovarian stimulation will be carried out by means of the administration of the hormones responsible for the follicular development so that, when the follicles are prepared, the follicular aspiration will be performed and the oocytes will be obtained, which will be donated to the recipient woman for being inseminated with the sperm of your partner or a donor, if the case requires it.

Preparation for reception

The recipient woman must have the endometrium ready for the moment of embryo transfer, so it will be monitored by ultrasound and blood analysis when needed, the development thereof, which can be done in a natural cycle or by administering estrogen, in what is called a cycle of Substituted Hormone Therapy (THS). Doing it in one way or another will depend on the characteristics of each patient.

3. IVF / ICSI and embryo transfer

Once the donor’s oocytes are in the laboratory, they will be inseminated with the sperm of the recipient or the donor of semen, which will have been previously prepared in the IVF laboratory. From this moment on, it is an IVF / ICSI process like any other, in such a way that the endometrium of the recipient is synchronized with the stage of development of the embryos, and the embryo transfer is made at the appropriate time (between days 3 and 6 of embryonic culture). For the endometrium to transform and go from being proliferative (while developing in the first phase of the cycle) to secretory endometrium (which is how it should be to receive the embryos and that they can implant), what is done is to add progesterone to the estrogen that the recipient carries in her THS cycle. This therapy is maintained until the pregnancy test, which, if positive, will last until week 10-12 of the same.

4.Vitrification of remaining embryos

If at the time of the embryo transfer there are viable surplus embryos, that is, of good quality, they will be vitrified and kept frozen for later use by the couple. If pregnancy is achieved and vitrified embryos remain, you may be able to give a brother with the same parents.






✓  Guarantee of the microinjection of 5 mature oocytes
✓  Pre-treatment visit / Cycle programming
✓  Psychological care visit
✓  Donor ovarian stimulation
✓  Receiving preparation
✓  Donor ovarian puncture
✓  Processes and laboratory techniques
✓  Culture and embryo selection with Time-Lapse
✓  Cultivation of blastocyst embryos
✓  Embryonic transfer
✓  Selection tests and suitability of the donor
✓  Medication and financial compensation of the donor
✓  Pregnancy test and 1st ultrasound included


✘ Vitrification and maintenance of embryos

✘ Genetic compatibility study

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