HCG is a hormone produced by pregnant women, and detection of concentration can test whether a fetus develops normally. Completed HCG, also known as HCG, is produced by the trophoblast layer of the placental chorionic membrane.
In fact, the fertilized ovum reaches out and grips the uterine wall with dendritic tentacles after implantation, called human villi. It forms an early placenta. When the placenta is not mature, they get more villi and attach to form a thin layer Membrane.
These chorionic membranes filled with blood vessels gradually, and become the initial nutrient and metabolic link between the mother and the embryo. During the first eight weeks of gestation, HCG concentration increased rapidly, and after about eight weeks, HCG decreased gradually until it reached a relatively stable level at 20 weeks. Pregnancy can usually be confirmed by a human chorionic test in the blood or urine.
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