It is now much more common to perform embryo biopsy for preimplantation genetic testing (PGT, formerly known as PGD) on day 5 of embryo development, as the embryo at the blastocyst stage (day 5) has a greater number of cells than on day 3 and, therefore, a small number of cells can be extracted from the trophectoderm (the part of the embryo that will give rise to the placenta).
Read the full article on: What is the procedure for pre-implantation genetic diagnosis? ( 62).
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
