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What are the differences between embryo vitrification and freezing?

By Zaira Salvador.
Last Update: 09/18/2018

Embryo freezing is actually the method used before the vitrification technique was discovered. It was a slow, progressive process that could last up to 2-3 hours. The survival rates were not too high due to the damage caused to the embryos by ice crystals. Although it allowed day 2-3 embryos to be frozen, blastocysts were unable to survive.

Embryo vitrification, conversely, is a ultra rapid procedure that can last just a few minutes, and most importantly, it allows for blastocysts to be cryopreserved as well. This technique is not harmful for the embryos, since it prevents the formation of ice crystals.

You may also enjoy some further information reading this: Cryopreservation & Vitrification of Embryos, Sperm & Eggs.

Suggested for you: What Is Embryo Vitrification? – Advantages over Slow Freezing.

 Zaira Salvador
Zaira Salvador
BSc, MSc
Embryologist
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV
Embryologist. Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI) License: 3185-CV.
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