As I mentioned earlier, at my lab about 85% of the blastocysts that are frozen (they only freeze blastocysts) survive the thaw. That’s pretty good. Interestingly, they suggested that the blastys that survive the thaw have better odds than the fresh of the same rating, probably because the freezing process weeds out more of the weak ones.
Unfortunately, the miscarriage rate tends to increase with the frozen embryos.
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