<Tr> <Th_colspan="2"> Other data </Th> </Tr> <Tr> <Th> Locus </Th> <Td> Chr. 19 q13. 3 </Td> </Tr> <P> Human chorionic gonadotropin (hCG) is a hormone produced by the placenta after implantation . The presence of hCG is detected in some pregnancy tests (HCG pregnancy strip tests). Some cancerous tumors produce this hormone; therefore, elevated levels measured when the patient is not pregnant may lead to a cancer diagnosis and, if high enough, paraneoplastic syndromes, however, it is not known whether this production is a contributing cause, or an effect of carcinogenesis . The pituitary analog of hCG, known as luteinizing hormone (LH), is produced in the pituitary gland of males and females of all ages . </P> <P> Regarding endogenous forms of hCG, there are various ways to categorize and measure them, including total hCG, C - terminal peptide total hCG, intact hCG, free β - subunit hCG, β - core fragment hCG, hyperglycosylated hCG, nicked hCG, alpha hCG, and pituitary hCG . Regarding pharmaceutical preparations of hCG from animal or synthetic sources, there are many gonadotropin preparations, some of which are medically justified and others of which are of a quack nature . As of December 6, 2011, the United States Food and Drug Administration has prohibited the sale of "homeopathic" and over-the - counter hCG diet products and declared them fraudulent and illegal . </P>

Where is human chorionic gonadotropin (hcg) produced