How many weeks does nt usually take?

We all know that in the second trimester, three special rectifications need to be done. The first check is to do NT, the second check is to do Down syndrome screening, and the third check is to do special rectification for deformities. Since the special rectification of deformities is basically all done based on four-dimensional color ultrasound, many people call the third inspection four-dimensional color ultrasound. The contents of the three special treatments are all different, and the time of implementation is also different. Our country calls on all pregnant women to go to the hospital on time for the three special treatments.

So, at how many weeks of pregnancy is the NT check usually done? We all know that among the three special rectifications, NT is the first check and is the very first thing to do. NT is mainly used to check whether the fetus suffers from congenital cerebral palsy. Therefore, it is necessary to do the examination when the fetus's head is just developing. The best time to do NT is between 11 and 12 weeks of pregnancy. The accuracy of NT examination done at this time is 90%. In other words, fetuses that can undergo NT screening immediately can accurately understand whether they have congenital cerebral palsy.

Some female friends may be pregnant for the first time and do not know what NT is, nor do they know the necessity of NT, and naturally they are even less clear about when to do NT. In fact, if you are not sure when to do the pregnancy test, you need to follow the doctor's instructions and go to the hospital for the pregnancy test on time. The doctor will arrange your next prenatal check-up and the content of the pregnancy test according to your pregnancy week. You just need to go to the hospital on time.

Also, there is a need to schedule a NT test. It does not mean that you can go to the hospital for a NT test immediately when you are 11 or 12 weeks pregnant. This is not possible. Generally, you need to make an appointment for NT more than ten days in advance in hospital outpatient clinics. If it is a hospital outpatient clinic with a large number of consultations, it may take more than a month in advance to make an appointment for NT. Some pregnant women are still worried about whether it is better to do NT at 11 weeks or 12 weeks of pregnancy. In fact, it is already very good to be able to schedule a time for NT, not to mention that the results of NT done at 11 or 12 weeks of pregnancy are the same.

So, at how many weeks of pregnancy should the NT test be done? The best time to do the NT is between 11 and 12 weeks of pregnancy. The results obtained if done too early or too late will be inaccurate. Moreover, the NT can only be done when the head starts to grow. The fetal head has not started to grow before 11 weeks of pregnancy, so it is useless to do it. However, it is too late to do NT after 12 weeks of pregnancy. The head has already grown and it is no longer possible to do NT to check whether the fetus has congenital cerebral palsy.