Human chorionic gonadotropin value >2000 U/L at 6 weeks of pregnancy. Human chorionic gonadotropin (hCG) is secreted by the trophoblast cells of the fertilized egg after pregnancy, and its secretion increases with the increase of gestational weeks, and then it can rise by one fold every 1.7-2 days, and can reach the peak at 8-10 weeks of pregnancy. When 6 weeks pregnant blood hCG value is usually >2000U/L. Generally, you can determine whether you are pregnant or not by testing blood hCG about 10 days after coitus, and review the blood hCG value regularly to understand the development of the embryo. In early pregnancy, at about 6 weeks after menopause, ultrasonography should be performed to determine intrauterine pregnancy, except for ectopic pregnancy, hyperemesis gravidarum and other pathological pregnancies.