This is an automatically translated article.
The article was professionally consulted by Dr., Doctor Ngo Thi Uyen, Department of Obstetrics and Gynecology - Vinmec Nha Trang International HospitalThe hormone hCG is secreted by the placenta during pregnancy. The concentration of hCG in the blood of pregnant women changes over the weeks of gestation with a huge difference in the lowest and highest concentrations. However, a gradual increase in concentration, then a gradual decrease and a start to level off also occurred at both the highest and the lowest levels. This shows that the hCG level does not matter whether it is high or low, but only whether the concentration increases, decreases and stops.
1. The role of beta HCG levels and pregnancy
HCG stands for the hormone Chorionic gonadotropin in the human body and is produced during pregnancy. HCG is secreted by trophoblast cells of the placenta shortly after egg fertilization. The rapid rise in serum hCG levels after conception makes it a signal for the diagnosis of late pregnancy and for monitoring gestational age ((monitoring fetal growth during the first weeks of pregnancy).HCG appears to maintain the corpus luteum. It allows the synthesis of progesterone and estrogen and supports the endometrium which is an important indicator of pregnancy. Beta hCG is checked through a blood test of the mother during pregnancy. about 8-9 days after ovulation.
Trắc nghiệm: Sự thay đổi nồng độ beta HCG thay đổi theo tuổi thai
hCG là một hormon quan trọng được tiết ra khi phụ nữ mang thai. Nồng độ beta hCG được tính theo đơn vị mUI/ml. Hãy cùng theo dõi bài trắc nghiệm sau đây để biết được Nồng độ beta HCG thay đổi theo tuổi thai như thế nào?2. At what stage of pregnancy do beta hCG levels peak?
Table to monitor beta -hCG levels based on gestational age (from the first day of the last menstrual period):| Tuổi thai |
Nồng độ beta-hCG (mIU/ml) |
Tuổi thai |
Nồng độ beta-hCG (mIU/ml) |
| 3 tuần | 5-50 mIU/ml | 9-12 tuần | 25.700-288.000 mIU/ml |
| 4 tuần | 5-426 mIU/ml | 13-16 tuần | 13.300-254.000 mIU/ml |
| 5 tuần | 18-7.340 mIU/ml | 17-24 tuần | 4.060-165.400 mIU/ml |
| 6 tuần | 1.080-56.500 mIU/ml | Từ tuần thứ 25 cho tới ngày sinh | 3.640-117.000 mIU/ml |
| 7-8 tuần | 7.650-229.000 mIU/ml | 4-6 tuần sau sinh | <5 mIU/ml |
hCG levels peak around 8-10 weeks of pregnancy. From the 10th week onwards until the late stage of pregnancy, the placenta secretes hCG instead of the trophoblast to maintain the life and development of the fetus, the trophoblast is reduced, the trophoblast layer also decrease and become thin so that the secretion of hCG is reduced and hCG is no longer in the maternal blood for 4-6 weeks postpartum.
Beta HCG test only helps to identify pregnancy, monitors fetal development through the development of the placenta, but does not completely reflect the gender, weight, and intelligence of the fetus. Therefore, mothers should not be too worried about beta HCG levels, should not monitor the test continuously, while the baby's health can also be assessed through other indicators, other means. Accordingly, what needs to be done is that pregnant women should take care of themselves, have regular antenatal checkups, combine proper eating, exercise and rest, and be ready to welcome the birth of their baby.
Xét nghiệm beta HCG chỉ giúp xác định có thai, theo dõi sự phát triển của thai nhi thông qua sự phát triển của bánh nhau
Please dial HOTLINE for more information or register for an appointment HERE. Download MyVinmec app to make appointments faster and to manage your bookings easily.
