How much do you know about the role of hCG?
Human chorionic gonadotropin (hCG) is a glycoprotein secreted by trophoblastic cells of the placenta and is the most commonly used pregnancy test hormone. The main function is to stimulate the corpus luteum, which is conducive to the continuous secretion of estrogen and progestin, in order to promote the formation of the uterine decidua, so that the placenta growth and maturity. Once the embryo is implanted, the trophoblast cells begin to secrete hCG, so a pregnancy can be judged by the hCG value in the blood or urine.
A complete hCG is composed of glycoproteins of pae and lx dimer: the lu-subunit is Shared by the anterior pituitary hormone, and its composition and structure are consistent with the human pituitary TSH, LH and FSHa subunits, so the determination of hCG has cross-reaction with the three hormones mentioned above.
Units - subunits are specific to hCG. So the argon-subunit determines the hCG and the biological and immunological properties. The determination of -hcg can reduce the cross-reaction and accurately reflect the level of hCG in blood and urine.