When is the best time for IVF embryo transfer?

1, IVF should be transplanted regularly.

As for periodic transfer, it is known that IVF adopts blastocyst culture and blastocyst transfer. So in terms of time, the embryo needs to stay in the test tube for 5 to 6 days from the time when the sperm eggs leave the human body. (attention! In China, many fresh embryos have been transplanted, that is to say, three days of embryo culture is enough)

2. IVF cannot be transplanted regularly.

In the case that the test tube cannot be transplanted regularly, in addition to the previous 5-6 days of laboratory embryo culture, it is necessary to continue to stay in a special "test tube" and store it in a liquid nitrogen environment of-196℃ until the frozen embryo is re-used. Theoretically, frozen embryos can be preserved for a long time under ideal conditions.

So, how long does it take to use the "test tube" for IVF embryo culture? At this point, it can be said that it takes at least 3 days, and the routine is 5~6 days. Anyway, it depends. As long as the embryo is not transplanted into the mother's uterus, it needs the help of laboratory equipment and special laboratory environment, and the details need to be determined according to the actual situation.