For Parents

Oocytes are affected by freezing significantly more than embryos, as they are more sensitive to the processes of freezing and defrosting. Initially, we used the slow freezing method. It has certain disadvantages; for example, the creation of crystal ice inside a cell damages cellular membranes. If such a thing happens, the oocyte becomes unsuitable for further use in fertilisation. During slow freezing, only 75% of oocytes stayed viable. Nowadays, we use the vitrification method, fast freezing, during which intracellular water turns into an amorphic gelatin-like substance. It excludes the risk of damaging cellular membranes. All our specialists complete educational programs learning this technique and undergo further training directly from the technique’s developers. According to last year’s statistics from our clinic, 100% of oocytes preserved their vital signs and quality after defrosting.

If a patient needs donor oocytes for an IVF trial, they can be either fresh or frozen. Some believe that the quality of fresh oocytes is higher. However, it is harder to obtain them, as it requires synchronising donor and patient menstrual cycles. Secondly, it is quite an expensive procedure. The vitrification method allows to preserve oocyte’s quality, so frozen oocytes are a cheaper biological material than fresh oocytes, with their quality being as good as fresh ones. Another advantage of frozen oocytes is the possibility to get them at any time and in any quantity in our cryobank. There is no qualitative difference between fresh and frozen oocytes used in IVF cycles.

The choice of donors is based on multiple criteria. For some patients, a similar appearance is essential; for others, it is the match of blood group and rhesus factor. Some pay attention to nationality and religion. We consider all of our patients’ preferences and present you with multiple candidates from which you can choose. You can also send us your photo and leave the rest of the work to our specialists.

After oocytes are obtained, their maturation stage is estimated. Accordingly, oocytes are divided into three groups: degenerative, mature, and immature. Only mature oocytes are frozen, and others are utilised.

Our specialists deliver across all regions of Russia and to the countries nearby. Time of delivery is discussed individually and is usually about one day and more depending on the area of delivery.