In IVF treatment, before the embryo transfer operation, our medical staff will inform the patient of her transferred embryo. Some patients often feel confused after seeing a series of figures. Now let's explain in detail how embryos are graded and what those numbers stand for. Zhao Wanqiu, Assistant of Reproductive Center of Shaanxi Maternal and Child Health Hospital
About 48 hours after the egg retrieval operation, the fertilized egg will divide into 4 to 6 cells. If you transplant at this time, that is, the second day we usually say, and the number of embryonic cells is within this range, and there is no other dysplasia, we will give your embryo a score of 1/4, indicating that your embryo is 4 cells at the time of observation and develops well, belonging to 1. Some embryos show inadaptability to the external environment. When there are a few fragments, vacuoles and uneven sizes, we will appropriately lower the score and give a score, such as 2/5; At the same time, if the number of cells is less than 4 or more than 6, it means that your embryo development is slightly slower or faster than normal. We will also adjust the embryo rating and give a score of 2/3 or 2/8, just like a class of primary school students. Some people are tall and others are short, but they will not play a decisive role in their future growth.
The next day, that is, the morning of the third day of transplantation for most patients, the fertilized egg divided into 8 ~ 10 cells, and the embryo grading method was similar to the next day.