Fertility Preservation


If you are thinking of postponing your maternity project, you should consider Fertility Preservation (Egg Vitrification), ideally before the age of 35. From that age on, the ovary begins an aging process that affects the quality of your eggs.


With Egg Vitrification, we manage to have eggs maintaining their reproductive capacity until you decide it’s time to use them.


Egg Preservation consists of the following steps:


Overall duration of the Vitrification Process: 15 days


  1. Start

In general, it begins coinciding with the first days of the period. Sometimes it is necessary to program it with contraceptives.


  1. Ovarian stimulation and ultrasound follow-ups

Ovarian stimulation and ultrasound follow-ups

There is no standard protocol for ovarian stimulation, as each woman needs a personalized protocol.

Follicular retrieval is achieved by delivering gonadotropins and follicle growth is monitored by serial transvaginal ultrasound.

Typically, the duration of this phase is 12 to 15 days, and 3 to 5 ultrasounds are needed.


  1. Ovarian puncture

The egg retrieval is performed by puncture of the follicles transvaginally, by ultrasound control and under sedation.


  1. Vitrification

The eggs obtained are treated with cryoprotective substances and immersed in liquid nitrogen at -320ºF. At this temperature, eggs usually keep their reproductive potential intact.

Once vitrified, the eggs are stored until you decide to use them to start your family project. At that time, eggs can be fertilized In Vitro in two ways:


Traditional IVF: The sperm are deposited in the same culture medium in which the eggs are already found.


IVF / ICSI (Intracytoplasmic Microinjection): A single sperm is injected into the cytoplasm of each egg.


  1. Embryo Culture

One day later, the fertilization process is checked and embryonic development is monitored in real-time (Time Lapse).


  1. Embryo Transfer and Cryopreservation

It is a simple and painless process, which takes place on day 3 or 5 (blastocyst) of the culture.

The selected embryos (no more than two) are introduced through a fine cannula into the uterus, under ultrasound control. The process takes between 10 and 20 minutes, and the remaining embryos are frozen.