Usually HCG value is the most intuitive value to judge pregnancy after IVF embryo transfer, the 8th-12th day of embryo transfer, expectant mothers with an urgent mood to test pregnancy, when they get the report, this value is also half-understood, can not understand the above dozens or even hundreds of what is represented?
After a woman becomes pregnant, the HCG value will increase with the increase of gestational age, and the level of HCG will rise rapidly in the first three months of pregnancy, doubling on average every 2-3 days, which is what many expectant mothers often say about the doubling of HCG.
What is the reason for the low HCG value?
1. Calculate the wrong date of conception: during the early pregnancy period, if the blood HCG value is low, it may be due to the wrong calculation of the last menstrual period.
2, ectopic pregnancy: the blood HCG value is low, check again the next day, if the number of increases is not doubled, you need to go to the hospital to do ultrasound at 45 days to determine whether it is ectopic pregnancy.
3. Embryonic development delay: it may be caused by embryonic development delay, and it is necessary to go to the hospital for fetal protection treatment in time. If there is no problem with the development of the embryo itself, after effective treatment, the HCG will appear doubly elevated.
What is the reason for the high HCG value?
1. Delayed ovulation: the time of the last menstrual period was incorrectly estimated, resulting in a discrepancy between the actual gestational age and the estimated gestational age.
2. Twins or multiple births: because the value of multiple pregnancies is higher than that of single pregnancies.
3. Mole: the value of blood hCG is usually higher than the normal pregnancy value of the corresponding gestational week. If it is confirmed to be a mole, immediate hospitalization is required.
4. Others: On the test list of Down's screening, the median multiple reference range of β-HCG is 0-2.5, if it is higher than this value, it will adversely affect the safety of pregnant mothers and babies, such as pregnant women are more likely to suffer from pregnancy hypertrophy. Some pregnant women have been injected with HCG to protect the fetus in the first trimester, so there is a possibility that the HCG value is high when doing Tang screening.
How is embryonic development monitored by HCG?
According to the law of HCG changes, in the first trimester we can roughly judge the development of the embryo by the growth of HCG and whether it can increase by more than 66% every 48 hours. After 7-8 weeks of pregnancy, the gestational sac, fetal buds and fetal heart rate in the uterine cavity can be clearly seen through ultrasound examination.
At this time, HCG is already at a very high level, and we no longer rely on changes in HCG levels to determine whether the embryo is well developed and whether it needs to be preserved. Instead, it should rely on ultrasound examination to judge the development of the fetus.
Therefore, in the first trimester, if a pregnant woman with abdominal pain, bleeding and other symptoms of threatened miscarriage, whether she needs to protect the fetus, can not simply rely on whether the HCG has doubled, but also need to combine the gestational age, symptoms, and B ultrasound examination and other contents to comprehensively judge.
In short, after the IVF transplantation, after getting the examination report, you should ask the doctor, do not think about it yourself, do not compare with others, blindly pursue HCG double, or relax your mentality and welcome the arrival of a good pregnancy.