Not necessarily. The implantation rate of frozen embryos is similar to that of fresh embryos. The embryo vitrification process is well developed and safe, so it would not affect embryo viability.
Read the full article on: Repeated Implantation Failure – Reasons Why Embryos Don’t Implant ( 97).

Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV