Many mothers experience these problems during pregnancy tests and begin to
feel uneasy when they carry a report showing low levels of progesterone or a
tendency toward "threatened abortion." But do you really know the relationship
between human chorionic gonadotropin (HCG) and progesterone and abortion?
What are HCG and progesterone?
HCG refers to human choriotrophin, which is produced by the body on the
sixth day after fertilization, when the fertilized egg is ready for
implantation. HCG stimulates the production of progesterone, which can maintain
the development of the embryo during the first 8 weeks of pregnancy and ensure
the nutrition supply of the embryo.
Why do we measure HCG?
Blood beta-hcg increases rapidly in the first trimester of normal pregnancy
with a doubling time of 1.7 to 2 days. In general, hCG needs to increase by at
least 67% every 48 hours within 7 weeks of gestation. Urine and blood HCG levels
are close, and there is a slight diurnal fluctuation, generally using the first
urine or blood samples for detection. Through the determination of HCG, we can
know the development of embryo, whether there is the possibility of abortion,
abortion and ectopic pregnancy.
The hCG concentration of multiple pregnancy, hydatidiform mole,
choriocarcinoma and Rh blood group incompatibility was higher than that of
normal pregnant women. For example, the blood HCG concentration in hydatidiform
mole was significantly higher than the normal gestational reference value, and
continued to rise after 8-10 weeks of menopause