Dab tsi yog Serum Human Chorionic Gonadotropin

Tib neeg chorionic gonadotropin (HCG) yog glycoprotein secreted los ntawm trophoblastic hlwb ntawm placenta thiab glycoprotein muaj pes tsawg leeg ntawm lub dimer. Glycoprotein hormone nrog lub cev hnyav ntawm 36700, Cov subunits yog qhov pib zoo ib yam li FSH (follicle stimulating hormone), LH (luteinizing hormone), thiab TSH (thyroid stimulating hormone) secreted los ntawm lub caj pas pituitary, yog li kev sib cuam tshuam tuaj yeem tshwm sim ntawm lawv cov subunits. muaj cov qauv sib txawv.
Hauv cov poj niam laus, tom qab lub qe fertilized txav mus rau hauv lub uterine kab noj hniav thiab implanted, nws tsim ib tug embryo. Thaum lub sij hawm tus txheej txheem ntawm kev loj hlob mus rau hauv ib tug fetus, lub syncytiotrophoblast hlwb ntawm lub placenta tsim ib tug loj npaum li cas ntawm HCG, uas yuav raug tso tawm mus rau hauv cov zis los ntawm cov ntshav ncig ntawm tus poj niam cev xeeb tub.