Human chorionic gonadotrophin is an important indicator to judge a woman's
pregnancy. This hormone is secreted by placental tissue. On the 6th day after
fertilization, trophoblast cells begin to secrete trace amounts of HCG. An
ectopic pregnancy should be suspected if the HCG does not double or reach the
desired pregnancy value.
In addition, trophoblast neoplasms should be highly suspected if levels of
HCG are abnormally elevated above the pregnancy peak and remain elevated.
Human plush membrane gonadotropin is somewhat normal
Human chorionic gonadotrophin, also known as HCG, is secreted by
trophoblast cells in the placenta and is a glycoprotein that maintains
pregnancy. For women who are not pregnant, the range of human chorionic
gonadotrophin is 0~5U/L, which varies according to the constitution of each
For pregnant women, a small amount of HCG was secrete on the 6th day after
fertilization. Serum HCG concentration reached a peak (50000~100000U/L) at the
10th week of gestation, and then decreased rapidly. In the middle and third
trimests, HCG was only 10% of the peak. For patients with trophoblast disease,
HCG results are often above 1000000U/L.