Tang screening should be familiar to everyone. It is a test performed by pregnant women during pregnancy to check the health of the fetus, rule out fetal abnormalities, and detect whether it is a Down syndrome child as early as possible. Doctors usually advise pregnant women to undergo this test. So, do some pregnant women not know that serological screening is a Down syndrome screening?
The understanding of serological screening as Tang screening is one-sided and not entirely accurate. Tang screening involves extracting blood from pregnant women, testing the concentrations of free estriol, chorionic gonadotropin, and alpha fetoprotein in the serum, and then inferring the risk of Down syndrome in the fetus based on the age, weight, and duration of pregnancy. Tang screening is a serological screening, but Tang screening is only one type of serological screening, and serological screening is not entirely limited to Down syndrome screening.
Serological screening can not only detect Down syndrome, but also perform non-invasive DNA testing. Therefore, if doctors and pregnant women talk about doing serological screening, it may be Down syndrome screening or non-invasive DNA testing. These two tests are related to the age of the pregnant woman and whether she has a family history. Individuals under the age of 35 without a family history are required to undergo Tang screening, while those over the age of 35 with a family history are required to undergo non-invasive DNA testing.
In short, pregnant women must pay attention to two examinations, which involve whether the fetus has major abnormalities, and must not be careless. Pregnant women should listen to the doctor's advice and follow the doctor's advice to undergo various examinations. They should not cause trouble just because they think it is irrelevant and their child has major problems after birth.
