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What quality does an embryo have to have in order to be frozen?

By Babygest Staff .
Last Update: 12/17/2020

It is always preferred to freeze A and B quality embryos, although it is also possible to vitrify C quality embryos.

However, the decision to freeze the D quality embryos will depend on the center itself. These embryos have low quality, as well as the probability of survival after thawing. In these cases, it is usually decided to leave the embryos in culture until day 5-6 of development to study their evolution.