How many days after in vitro fertilization (IVF) embryo transfer can pregnancy be detected?
Generally, pregnancy refers to gestation. Pregnancy can be detected 10 to 14 days after in vitro fertilization (IVF) embryo transfer. The specific analysis is as follows:
Blood testing is the most accurate method for detecting pregnancy, determining pregnancy status by measuring the level of human chorionic gonadotropin (hCG) in the blood. Human chorionic gonadotropin is secreted by the trophoblast cells after embryo implantation. Therefore, following embryo implantation, hCG levels in the blood begin to rise and pregnancy generally can be detected via blood testing after approximately 10 days.
Urine testing is relatively simple and convenient, but it is less sensitive than blood testing. Because the rise in hCG levels in urine occurs more slowly, pregnancy generally can be detected via urine testing about 14 days after embryo transfer.
As embryo implantation and hCG secretion require a certain amount of time, testing too early may lead to inaccurate results and increase the patient's anxiety. Additionally, after IVF embryo transfer, patients should maintain a positive mindset and healthy lifestyle, which can help improve the success rate of IVF. It is advisable to avoid excessive tension and anxiety, and to maintain adequate sleep and a balanced diet.