Preimplantation Genetic Screening

In the IVF / ICSI procedures, personal treatment approaches for the individual are taken as basis.

Ovarian Stimulation

An egg develops in every woman in a natural menstrual period. In the case of IVF treatment, some hormone injections are used on a daily basis to obtain more eggs, to therefore achieve more embryos. This process is approximately 10-20 days depending on the treatment protocol applied and the response of the patient’s ovaries. During this period, the development of the ovules are monitored 3-5 times by ultrasound examination and by observing the hormone tests (Estradiol, LH and progesterone) at appropriate times.

Egg Collection (OPU) and Laboratory procedure

When the follicles (sacs which are thought to have eggs in them) reach the desired / appropriate size and number, the release injection (hCG or GnRH analogue) is made. Within the following 34-36 hours, with the effect of this injection, the maturation of the eggs take place in a natural way. At the end of this maturation period, mild sedation is performed to collect eggs that the patient will not feel and remember. This process takes approximately 15-30 minutes.


Once the eggs are collected, the best sperm which is selected and the mature eggs (mature oocytes) are fertilized by the so-called microinjection method. In this process, the sperm are inserted into the egg with the help of a small needle. With this method, the highest fertilization rate is reached. From this process onwards, embryo formation steps are followed. After a period of 3 to 5 days, embryos are transferred to the mother’s uterus.

Growing Embryos in the laboratory

In the following days, some of the embryos continue on the path, while others stop progressing. Ongoing embryos are classified by the day-to-day morphology (shape / image) and their divisions. Transfer of good quality embryos is prioritized. It is thought that the chances of success will increase in this way.

The transfer procedure is to place the best embryos in the mother’s womb by a special cannula (soft tube). This process is painless and simple. There is no need for anaesthesia / sedation.

Freezing of Remaining Embryos/ Vitrification

If good quality embryos are left behind after embryo transfer, freezing them is important. In this case, if the couple wants another child or if the procedure fails, there will be no need to develop and collect eggs again ie all the operations will not have to be repeated.

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