1: Early blastocyst-the blastocele is less than half the volume of the embryo. This number indicates the blastocyst development stage, or the degree of the expansion of the embryo’s cavity. TE Quality: A – C (A being the best) Let’s start with the number, 1-6. 2: Blastocyst-the blastocele is greater than or equal to half of the volume. I’m having trouble finding any stories about a 2AA embryo, I know AA shows good quality but the lack. My first transfer (fresh) was a 3AA day 5 embryo who is my 2yo son, and my second (FET) was a 3BB day 6 embryo sadly m/c at 6 weeks. I only have one embryo left and it’s a 2AA. I am mentally preparing to have my next FET in a couple months. The clinic says the 2AA is really strong and the one that they will use first. This is our first round of IVF and out of 23 eggs we only have 2 embryos in the freezer (FET planned next month due to OHSS). I asked the doctor why they are not considering. When I checked online 3AA and 3BB embryos are considered great/good quality embryos.

Hi all, I had egg retrial in the beginning of June and I had several embryos with grade 3AA and 3BB which were discarded. Any Success Stories with 2AA and 2BB Embryos? S. So not necessary that your other 3 embryos are females.

So when the pairing is XX then it's a girl, when pairing is XY it's a male. One of the 23 chromosomes of male is either X or Y (they are the sex chromosomes). When the blastocyst grade is average, studies show the pregnancy rate drops to 50%. Transfers using excellent grade blastocysts have a pregnancy rates of about 65%. The most common scale uses a number and two letters to describe each embryo (‘4AB’ for example). Once fertilized, embryos are graded according to their form and quality. But this is just to say I think a 2AA gives you a great chance. We transferred 2, but one was just a morula so I'm thinking it was likely the 2AA. I've read a few forums where 2AAs have taken. Overall though, it seems a 2aa is still in the highest quality level.

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