Gonadotropin, human chorionic (hCG)
A human hormone made by chorionic cells in the fetal part of the placenta. Human chorionic gonadotropin (hCG) is directed at the gonads and stimulates them. Hence, the name "gonadotropin." The presence of hCG is detectable by immunologic means within days of fertilization and forms the foundation of the common pregnancy tests. The level of hCG tends to be higher with a female fetus soon after conception. The level of hCG in maternal serum also enters as one component in the "double" and the "triple" screening tests used during pregnancy to assign risks of Down syndrome and other fetal disorders.

Medical dictionary. 2011.

Look at other dictionaries:

  • Human chorionic gonadotropin — chorionic gonadotropin, alpha polypeptide Identifiers Symbol CGA Alt. symbols FSHA, GPHa, GPHA1, HCG, LHA, TSHA …   Wikipedia

  • human chorionic gonadotropin — n a glycoprotein hormone similar in structure to luteinizing hormone that is secreted by the placenta during early pregnancy to maintain corpus luteum function and stimulate placental progesterone production, is found in the urine and blood serum …   Medical dictionary

  • human chorionic gonadotropin — n. HCG …   English World dictionary

  • Chorionic gonadotropin, human (hCG) — A human hormone made by chorionic cells in the fetal part of the placenta. Human chorionic gonadotropin (hCG) is directed at the gonads and stimulates them. Hence, the name gonadotropin. The presence of hCG is detectable by immunologic means… …   Medical dictionary

  • Human chorionic gonadotropin (hCG) — A human hormone made by chorionic cells in the fetal part of the placenta. Human chorionic gonadotropin (hCG) is directed at the gonads and stimulates them. Hence, the name gonadotropin. The presence of hCG is detectable by immunologic means… …   Medical dictionary

  • human chorionic gonadotrophin — noun hormone produced early in pregnancy by the placenta; detection in the urine and serum is the basis for one kind of pregnancy test • Syn: ↑human chorionic gonadotropin, ↑HCG • Hypernyms: ↑gonadotropin, ↑gonadotrophin, ↑gonadotropic hormone,… …   Useful english dictionary

  • human chorionic gonadotropin — noun hormone produced early in pregnancy by the placenta; detection in the urine and serum is the basis for one kind of pregnancy test • Syn: ↑human chorionic gonadotrophin, ↑HCG • Hypernyms: ↑gonadotropin, ↑gonadotrophin, ↑gonadotropic hormone,… …   Useful english dictionary

  • human chorionic gonadotropin — noun a hormone produced by the placenta and fertilised egg after implantation in the wall of the uterus, used as an indicator for pregnancy testing. Abbrev.: HCG Also, human chorionic gonadotrophin …   Australian English dictionary

  • human chorionic gonadotropin — (HCG)    A gonadotropic and leuteotropic hormone secreted by the chorionic vesicle …   Forensic science glossary

  • human chorionic gonadotropin — Biochem. See chorionic gonadotropin (def. 1). Abbr.: hCG * * * …   Universalium

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