A hormone that is capable of stimulating the testicles or ovaries to produce sperm or egg respectively.

A hormone which regulates the function of the gonads; the two main gonadotrophins are LH and FSH, both released from the pituitary gland.

A hormone that stimulates the production of sperm or eggs. Home Pregnancy test A test a woman can use at home to test urine for the presence of human Chorionic Gonadotropin (hCG).

English spelling for gonadotropin. The etymological derivation of the spellings is different, though. A trophic effect of a hormone implies a nourishing action, whereas a tropic effect of a hormone implies a switching action; arguably it's the latter (American) usage that is now known to be the more physiologically correct.