Dilute the reference value of human chorionic gonadotropin

　　The reference value of human chorionic gonadotropin dilution is generally not more than 10 or 25 if it is a woman who is not pregnant, if it is about 5 to 50 in the first week of pregnancy, 50 to 500 in the second week of pregnancy, 100 to 1000 in the third week of pregnancy, it will gradually double during pregnancy.

　　Human chorionic gonadotropin is the glycoprotein secreted by the cells in the trophoblast layer of the placenta, which can be used to judge whether a woman is pregnant according to the reference value. If the diagnosis is that a woman is pregnant, appropriate amount of folic acid can be added to effectively prevent the neural tube malformation of the fetus.