what is human chorionic gonadotropin
Human Chorionic Gonadotropin (HCG). Guide. The human chorionic gonadotropin (hCG) test is done to check for the hormone hCG in blood or urine. Some hCG tests measure the exact amount and some just check to see if the hormone is present. HCG is made by the placenta during pregnancy.The hCG test can be used to see if a woman is pregnant or as part of a screening test for birth defects.CG is made by the placenta during pregnancy. The hCG test can be used to see if a woman is pregnant or as part of a screening test for birth defects.