Couples who start IVF treatment enter into an exciting wait. Of course, they are right, because the expectation of the baby, which lasts for years, is replaced by an exciting waiting period, and at the end of this process, the news of pregnancy is an expected and desired end for everyone. Unfortunately, positive results do not come in every IVF treatment… It is so difficult to find an answer to the question 'Why didn't it happen?' Because every negative factor has already been tried to be eliminated at the beginning and end of the treatment and the best conditions have been achieved. Basically, in the presence of a sufficient number of eggs, good quality and number of mature sperm cells, good growth process, good uterine thickness and appropriate hormones, age is also very high! If it is not advanced, pregnancy success mostly comes. If there is a problem in one of these situations, our pregnancy success will decrease.

One of the most critical parts of IVF treatment is the quality of the embryo and the day it can arrive. The fertilized eggs divide every day and reach the stages of 2-4-8 cells, respectively, and the embryo that has reached the 8-cell stage is called a cleavage embryo, that is, the day 3 embryo in general. If it is kept for 2 more days and grown, this time the embryo is called the blastocyst, that is, Day 5 embryo. In fact, not every fertilized egg may reach the Day 5 blastocyst. After fertilization, approximately 50-60% of the embryo reaches the 5th day, that is, the blastocyst stage. Of course, quality classification of embryos is also done.

So, does the day 3 or day 5 embryo stick? There is no clear answer to this question. A very good quality Day 3 embryo has an advantage over a bad day 5 embryo. However, if the qualities are similar, this time the day 5 embryo is more successful in terms of attachment. It is a scientific fact that the embryos reaching the 5th day hold a little better, especially if a fresh embryo transfer is to be made. Because the embryo that has reached the 5th day can actually be described as a screened or selected embryo. In summary, the blastocyst, that is, the day 5 embryo is more advantageous in fresh transfer cycles. Day 5 IVF transfer is the most preferred one, day 3 IVF transfer is not recommended.

If you need more information about day 3 embryo transfer or day 5 embryo transfer, you can contact Caretta IVF Clinic. Caretta Clinic is the best IVF clinic in Istanbul Turkey. Get in touch with Caretta IVF Clinic for detailed information about day 5 blastocyst and day 3 blastocyst and IVF in Turkey.

Don't forget to check our latest IVF article: Why Does the First Attempt in IVF Treatment Fail?