https://www.youtube.com/watch?v=SPLHjFis_4M

胚胎等級從

D1 28小時 

D2 44-48小時  

D3 66-72小時

D4 88-96小時

D5110-120小時

D6-130-140小時

有不同之分類&評估

https://www.researchgate.net/figure/Sample-model-of-a-quality-grading-system-for-oocytes-and-embryos-A-Oocyte-grading_fig1_275098392