How many days after blastocyst transfer can it be detected?
It takes 12 to 14 days after blastocyst transfer to detect pregnancy. The blastocyst begins to implant 1 to 2 days after transfer, and then starts to secrete trace amounts of HCG in the body. About ten days after implantation, HCG can be detected in the mother's blood, so a pregnancy test strip can detect a faint double line on the 10th day after blastocyst transfer. However, some people may have a delayed implantation, so it is recommended to take a blood test for HCG to determine pregnancy 12 to 14 days after blastocyst transfer.
Firstly, most women will not have obvious symptoms during the process of implantation. Secondly, some women may experience implantation bleeding due to a transient decrease in estrogen levels, manifesting as light pink or brown bloody secretions lasting for 3-5 days. Thirdly, some women may be sensitive to chorionic gonadotropin and experience early pregnancy symptoms such as nausea, vomiting, loss of appetite, dizziness, fatigue, and weakness.
