After a female friend becomes pregnant, a placenta will form in the uterus. During fetal growth, nutrition is obtained through the umbilical cord and placenta. And the placenta also secretes hormones, which play an important role in maintaining normal fetal development. So, what are the hormones secreted by the placenta after pregnancy?
After pregnancy, the placenta mainly secretes chorionic gonadotropin, also known as HCG, which is very important for pregnant women. HCG can promote sufficient secretion of estrogen and progesterone in the corpus luteum of pregnant women's ovaries, and also stimulate the corpus luteum cells, playing a role in maintaining the lifespan of the corpus luteum.
The levels of HCG in the blood of pregnant women vary greatly during different stages of pregnancy. On the 6th day of pregnancy, trophoblast cells begin to secrete small amounts of HCG, which can be detected in the blood by the 10th day. After the successful implantation of the fertilized egg, the HCG in the pregnant woman's blood will rapidly increase, reaching its peak at 8 weeks of pregnancy. After 12 weeks of pregnancy, the HCG in the pregnant woman's blood will decrease.
The concentration of HCG varies greatly among individuals, and the serum HCG levels of each pregnant woman are different. So after receiving the HCG test report, pregnant women do not need to compare themselves with other pregnant women, but should conduct a longitudinal comparison based on their gestational age. If the HCG value is within the normal range and the doubling situation is good, it is considered normal.
