The pace of modern life, career pressure and achieving financial stability lead women to put off having a baby for longer. The average age of first conception in Europe is close to 30. It is, however, a proven fact that fertility begins to decline rapidly after the age of 35. Cryopreservation of eggs enables women to keep a reserve of eggs available so that they can plan to become pregnant when it suits them and preserve their fertility when cancer treatment is necessary. Cryopreservation allows them to preserve a certain number of eggs (depending on the woman’s age, concomitant conditions, history of genital tract operations, etc.) that may be used at a later stage to begin an assisted fertilization procedure.

Vitrification (ultrafast freezing of eggs) is a cryopreservation technique offering high survival and fertilization rates. Under natural conditions, a woman produces a mature egg every 28 days but the likelihood of cryopreservation and then fertilization of a single egg is very low.

To increase the likelihood of the eggs surviving and the possibility of fertilizing them after cryopreservation, the woman undergoes hormonal stimulation to produce a higher number of eggs. This is followed by egg retrieval under sedation, which is absolutely painless. The eggs are cryopreserved in liquid nitrogen in small test tubes (paillettes), where they may remain for several years.

To begin a pregnancy, the eggs obtained after thawing are inseminated using the technique of micro insemination (ICSI). Once fertilization has taken place, the embryos are transferred to the woman’s uterus after approximately 2-3 days.