For women in pregnancy, if this month menstruation delay for several days didn't come, urinalysis, usually is to use early pregnancy test paper or the morning urine urine pregnancy test to do, when urine human chorionic gonadotropin concentration reaches a certain degree, will show positive, everyone is in this way to preliminary judgment is pregnant.
1. What is human chorionic gonadotropin?
Human chorionic gonadotropin, or HCG, is produced by the syncytiotrophoblast of the placental chorionic membrane. It is an important indicator of pregnancy, not only can reflect the development of the child, but also can help identify the intrauterine or extrauterine pregnancy.
2. Functions of HCG
Its main function is to stimulate the corpus luteum, for the continuous secretion of estrogen and progestin progesterone to provide favorable conditions to promote the formation of uterine decidua, make the placenta grow and mature.
HCG can also reduce the rejection reaction of pregnant mothers. HCG inhibits the stimulating effect of phytolectin on lymphocytes, and human chorionic gonadotropin can adsorb on the surface of trophoblast cells to avoid the attack of embryonic trophoblast cells by maternal lymphocytes.