Human chorionic gonadotropin (hCG)

Human chorionic gonadotropin (hCG)

A hormone produced by an implanting embryo. If this hormone is present in a woman’s blood, it indicates a possible pregnancy. It can also be given to women undergoing fertility treatment to trigger ovulation, for example, if she is undergoing IVF. hCG injections may also be given post-embryo transfer to encourage progesterone production and promote implantation. Fun fact: the hormone hCG that’s taken as a drug is actually extracted from the urine of pregnant women.

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