Any embryo that is transferred into the uterus has a chance of implanting and resulting in pregnancy. However, an embryo classified as grade A is more likely to implant than an embryo of quality C, for example.
D-grade embryos have the worst prognosis. Most of them are discarded and not transferred. However, there are times when it is decided to do a long culture of these embryos and see their evolution up to the blastocyst stage or day 5 of development rather than discarding them directly.
Read the full article on: Embryo Quality & Grading – Does It Affect IVF Success? ( 33).
By Edurne Martínez Sanz B.Sc., M.Sc. (senior clinical embryologist), José Muñoz Ramírez B.Sc., M.Sc., Ph.D. (senior clinical embryologist), Mark P. Trolice M.D., F.A.C.O.G., F.A.C.S., F.A.C.E. (reproductive endocrinologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 06/14/2023
