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When are embryos implanted after the transfer?

By Sara Salgado.
Last Update: 11/29/2016

In order to implant the embryo, it must form a blastocyst, expand and leave the zona pellucida (the outer layer that surrounds it), so implantation does not begin until 6-7 days after fertilization. If the transfer is made on day 3, it would take 2-3 more days for the time to begin implantation to arrive, and if it is made on day 5, 1 or 2 more days.

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 Sara Salgado
Sara Salgado
Embryologist
Degree in Biochemistry and Molecular Biology from the University of the Basque Country (UPV/EHU). Master's Degree in Human Assisted Reproduction from the Complutense University of Madrid (UCM). Certificate of University Expert in Genetic Diagnosis Techniques from the University of Valencia (UV).
Embryologist. Degree in Biochemistry and Molecular Biology from the University of the Basque Country (UPV/EHU). Master's Degree in Human Assisted Reproduction from the Complutense University of Madrid (UCM). Certificate of University Expert in Genetic Diagnosis Techniques from the University of Valencia (UV).
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