hCG (human chorionic gonadotropin)

Human chorionic gonadotropin (hCG) is a hormone produced during pregnancy by cells surrounding the growing embryo and later by the placenta. Its primary role is to support the pregnancy by maintaining the production of progesterone, which helps sustain the uterine lining. hCG is also the basis for most pregnancy tests because its presence in urine or blood indicates pregnancy. Additionally, hCG levels can provide information about pregnancy health, including detecting potential issues or multiple pregnancies. Overall, hCG is a vital hormone that signals and supports early pregnancy development.