Is a 4BB embryo good?

1 fertility expert(s) answered this question

What does 4BB embryo mean?

Are grade B embryos good?

Answer from:
Senior Embryologist ReproMed Ireland

Yes, 4BB is a good embryo and it depends if it is on day 5 or day 6 but in this case it is better if this is on day 5, so on day 6 we can expect having hatching blastocyst. In this case 4BB is a good embryo on day 5 to transfer or to freeze.

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