Anonymous wrote:
That's not true about embryo survival--if the clinic uses vitrification, 80% +, and at some clinics, 90% + survive the thaw. I don't believe that they have to be of a certain "quality" to survive. I had two frozen at day 2, both survived the thaw and divided afterward--and I'm AMA, and didn't get pregnant, so they weren't super embryos.
I think clinics like SG put "stringent" quality requirements on freezing embryos because they'd rather have repeat business. Despite being so "stringent", SG has a very low FET success rate. Other clinics have a much higher rate and I'll bet it's because they're 1) better labs with better freezing and thaw and 2) they freeze more embryos, giving more of them a chance, as how they look does not seem to be a good reflection on their chromosomal normality/abnormality, which is the only important thing as far as whether it's a viable embryo.
Wouldn't the embry still have to be high quality for it to be worth freezing? Either way, ours were considered high quality enough to freeze. Ours were one not great quality 5 day and one that stopped developing at day 4.