Embryo grading can be complicated, ... Overall Blastocyst Quality, Trophectoderm Grade, and Inner Cell Mass Grade Predict Pregnancy Outcome in Euploid Blastocyst Transfer Cycles. https: ...

Typically, a blastocyst with a grade of 3BB or higher was deemed a good-quality blastocyst (GQB), whereas those below 3BB were considered non-GQBs.

The positive correlation between HCG level and blastocyst grade, as well as trophectoderm score, disappear after re-cryopreservation, prompting that re-cryopreservation procedure impaired ...

Blastocysts that have difficulty in dealing with the intruding sperm could be more susceptible to failed implantation," says Huppertz. New perspectives on reproductive competition and health.

Moreover, the rate of live births after transfer of a single fresh blastocyst-stage embryo was similar to that after transfer of two fresh cleavage-stage (day 2) embryos in the Scandinavian study ...

Typically, a blastocyst with a grade of 3BB or higher was deemed a good-quality blastocyst (GQB), whereas those below 3BB were considered non-GQBs.