More and more IVF clinics are inclined to implant developing eggs at the day 5 over day 3. What are the reasons? And what is the basis on which one to chose?
Pro:
On a most basic level 25% of 3 day embryos are normal vs. 65% of 5 day, which are now a blastocytes, are normal. Most clinics want to have the highest success rates possible. People chose to come to a clinic based on its success rates. So there is a survival mechanism to one element. That is one of the reasons they have an age limitation to whom they will work with. At some point it is against the odds that you will conceive.
