How successful is blastocyst freezing, can the success rate drop when thawed?
Our Expert's Answer
This information was published 9 years, 4 months ago and was correct at the time of publication. It may not reflect our current practices or regulations.
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Successful blastocyst freezing is now possible through a technique called ‘vitrification’. The success rate for all frozen embryos is slightly lower than fresh transfers as some embryos will not survive the freeze-thaw process and the best embryos are selected for transfer in the fresh cycle.