Hormone, 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 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 (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 — 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 — 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 — hu′man chorion′ic gonadotro′pin n. 1) biochem. pha a gonadotropic hormone that stimulates the production of estrogen and progesterone: its presence in blood or urine is an indication of pregnancy 2) pha a commercial form of this substance, used… … From formal English to slang
beta-human chorionic gonadotropin — ß hCG. A hormone normally found in the blood and urine during pregnancy. It may also be produced by some tumor cells. An increased level of ß hCG may be a sign of cancer of the testis, uterus, ovary, liver, stomach, pancreas, or lung. ß hCG may… … English dictionary of cancer terms
chorionic gonadotropin — human chorionic gonadotropin (HCG) (hCG) a two subunit glycopeptide hormone produced by syncytiotrophoblasts of the fetal placenta that maintains the function of the corpus luteum during the first few weeks of pregnancy, and is thought to promote … Medical dictionary
Chorionic gonadotropin alpha — Glycoprotein hormones, alpha polypeptide PDB rendering based on 1dz7 … Wikipedia