Human chorionic gonadotropin clinically known as human chorionic gonadotropin is a glycoprotein hormone that is produced by gestational trophoblast cells and will appear after pregnancy or if you have gestational trophoblastic disease. Human chorionic gonadotropin is produced by the placenta after pregnancy. In pregnancy, the trophoblast layer is formed when the fertilized egg is deposited on the 6th day of pregnancy, and human chorionic gonadotropin is produced after the fertilized egg is deposited, so the level of human chorionic gonadotropin is used to diagnose pregnancy. Human chorionic gonadotropin promotes the production of estrogen and progesterone, which have a protective effect on the embryo. In a small number of women, an abnormally high level of human chorionic gonadotropin in the absence of pregnancy may indicate a gestational trophoblastic disease, which needs to be examined and diagnosed in a hospital. Human chorionic gonadotropin is a very important hormone in the human body, which can be used to diagnose various conditions such as early pregnancy, ectopic pregnancy, preeclampsia, and gestational trophoblastic tumors.