Before giving birth, it is necessary to undergo NT examination, which can detect whether the fetus has Down syndrome in advance. This examination should be done before 14 weeks of pregnancy to ensure more accurate results. However, the results of NT testing are not as accurate as non-invasive testing, so if there are any issues with NT testing, it is best to perform non-invasive confirmation again. If NT is normal, will there still be problems with non-invasive methods?
In general, if NT is normal, there will be no problem with non-invasive testing. As long as both the pregnant woman and her husband's family have no genetic diseases or the pregnant woman herself has no problems, there is no need to do non-invasive treatment again. Doctors generally do not require non-invasive procedures, so there is no need to do them. The incidence rate of Down's syndrome is also related to the age of the pregnant woman. Generally, the older the woman, the more recommended she is to have a non-invasive examination.
The cost of non-invasive examination is generally around 1500 yuan, which is a self funded project. Some local governments or enterprises provide subsidies, which can be free or at lower prices. It is best not to test before the twelfth week of pregnancy, as the concentration of DNA in the mother's body is too low at this time, and forced testing may not meet the testing requirements. After 24 weeks of testing, if the results are not satisfactory, it is generally recommended that the pregnant woman induce labor, which can cause significant harm to her body. So it must be after twelve weeks and before twenty-four weeks.
