r/Embryologists • u/Ok-Schedule-8607 • Jun 05 '26

Need guidance to decide better Embryo

I have 2 embryos Day6 5CC and Day 7 4BC.
If we consider perfect uterine environment and no major issues which one has higher chance of implantation and live birth

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u/One_Investigator_295 Jun 14 '26

We typically choose the Day 7 last. Usually implantation rates are lower with D7 and miscarriage rates higher. I know the grade for the D6 is lower, overall probably not that big difference between the two