A woman with a successful blastocyst transfer will be able to test for an elevated chorionic gonadotropin level of more than 25 IU/L around 7-8 days after the transfer, which is usually highly suspicious for pregnancy. Normally, if the blastocyst is slow to develop in the uterine cavity, or if it is late in implanting, it may take more than 10 days for the blood to be drawn and tested for elevated chorionic gonadotropin levels, which is also normal. After blastocyst transfer, women should pay attention to proper rest, maintain a regular lifestyle, increase nutrition, eat foods rich in protein, vitamins and trace elements, etc., to provide sufficient nutrients for early blastocyst growth and development, and avoid adverse stimulation by drugs, bacteria and viruses as much as possible.