Hold up, this sounds like unfertilized eggs. Does this mean that every period a woman has, where she passes an unfertilized egg is a wrongful death?! What in the FUUUUUCK...
I'm guessing the distinction here that allows this is that the cells haven't differentiated into more complex structures that could be damaged by cryogen.
They pretty much need to be frozen or destroyed if multiple eggs are retrieved during an egg retrieval procedure for IVF. You only implant one embryo at a time, so if you collect 8 eggs during the retrieval you'll potentially have 7 viable embryos that need to be dealt with, for example.
They fertilize each of the eggs that were retrieved and observe their development over a few days. Some will not develop well enough to be considered for implantation into the uterus, and they basically need to be destroyed as they have no hope of developing past a few weeks at most.
They'll use the most promising embryo for implantation. The remaining good quality embryos can be implanted at a later time, either if the first embryo doesn't work out or years later if you decide to have another kid. You can pay to have them frozen and stored for the next time you need to do IVF (which saves a ton of money on your next round of IVF since you don't need to pay for the medication or egg retrieval procedure), you can donate the embryos, or they can be destroyed.
True. Problem is, I would consider the question still valid on the basis that not every embryo successfully implants.
IVF can up the odds of success by using multiple embryos at the same time in the hopes that at least one of them will work, which is why people who go for IVF sometimes end up having quadruplets and such.
So every time one or more IVF attempts fail, what, they have to inform the government their 7th child in a row has died? Every post-coital period, do I hedge my bets?
Agreed. That said, I was just correcting the above commenter on the biology. It looks like they didn’t actually know when an embryo became an embryo. And it’s after fertilization. And even then, many fertilized eggs don’t actually become embryos.
I'm willing to admit when I'm wrong, but I promise you the world needs far less of people like me. I have far too many mental illnesses to count and don't play nice with others; even though I have an optimistic view of what humanity COULD be, and a general disillusionment because of seeing what humanity currently is.