In the mid-pregnancy, Down's syndrome screening is carried out by blood collection AFP β-HCG and μE3 triple screening method, in the clinical significance of the greater, so as to maximize the prevention of the birth of children with Down's syndrome, the examination time in the 15-20 weeks, the accuracy is lower than that of the early gestation Down's syndrome screening, the accuracy is about 70%. Pregnancy 11-13 weeks + 6 weeks to do the test, if so, pregnant mothers do not need to be nervous. If the first Down is a crisis, then directly choose non-invasive; high-risk, choose amniocentesis.
Down's screening is only an effective way to reduce the incidence of pediatric anomalies. It is not 100 percent accurate. To be precise, no medical treatment can achieve 100% success rate. This is basic common sense. Secondly, if you just look up Down syndrome online, you'll know that all your prenatal records are filed. If there was no problem at the time, it doesn't mean there wasn't a problem at all.
There is another most common method of checking whether a fetus has Down syndrome, and that is noninvasive DNA testing, which is the best screening method for Down syndrome, especially for Down syndrome, with a detection rate of about 99 percent. To summarize, the main clinical means of determining whether a twin has Down syndrome is the combined early sugar and NT test and non-invasive DNA test. Generally, BMW will do non-invasive DNA testing. Good luck with your pregnancy. Who knew it could be such a problem. After all, it's in the brain. No one can guarantee that the child won't be born with intellectual problems. And, after birth, it will take a series of surgeries to recover. It's going to cost a lot of money. Ordinary families can't afford it. They will consider or terminate the pregnancy. They were born with two protrusions on the fetal head.
Down syndrome is a congenital mental retardation. Symptoms vary from person to person. Symptoms are: a tilted forehead; a tilted forehead; an upward tilt under the eyes; a short neck; downward-facing ears; small earlobes; white or light gray spots on the irises; short, wide hands; a deep horizontal crease between the palms of the hands; and a dwarf-like appearance.