Fetal nt examination time

Prenatal check-up is a very important thing. Pregnant women who meet the requirements must do prenatal check-ups regularly, which plays a very important role in observing the health and development of the baby. However, prenatal check-ups still require an appropriate time, and you cannot miss the best time for testing. Below, the editor and everyone are going to focus on a question: when is the best time to do the fetal nt test?

When is the best time to do NT test?

1. Because the fetus is too small to observe the nuchal translucency before 11 weeks of pregnancy, and the fetus gradually grows and develops after 14 weeks of pregnancy, it may absorb unnecessary blood from the nuchal translucency and affect the test results. Therefore, it is best for pregnant women to do NT within 11-14 weeks of pregnancy to avoid inaccurate test results.

2. The nuchal translucency scan is usually performed between 11 and 14 weeks of pregnancy. It is technically impossible to perform an NT test before 11 weeks because the fetus is still very small at this time. After 14 weeks, the water stored in the fetus's subcutaneous tissue may be absorbed by the developing lymphatic system, making it impossible to calculate accurate test data. Therefore, pregnant women need to go to the hospital for NT examination within 11-14 weeks of pregnancy. Generally, a nuchal translucency scanner can be performed in a tertiary hospital or a large gynecological hospital.

Necessity of NT test

1. In China, doctors generally recommend that key subjects with Down syndrome undergo a nuchal translucency scanner, such as older pregnant women over 35 years old, pregnant women who have previously given birth to a baby with Down syndrome, or pregnant women with a family history of giving birth to a baby with Down syndrome. Although the nuchal translucency scanner cannot accurately determine whether the fetus is sick, it can help pregnant women decide whether further diagnostic tests are needed.

2. The nuchal translucency scanner is a way to assess whether the fetus may have Down syndrome. It is a screening method. NT tests are different from confirmatory tests such as chorionic villus aspiration biopsy or amniocentesis. They can provide a clear diagnosis, but NT tests can only indicate risks.

3. The accuracy of the nuchal translucency examination is determined by many factors, including the level of the ultrasound doctor and the accuracy of the scanner used, so the examination results cannot be guaranteed to be 100% accurate.

4. The NT test can only provide a reference for whether further prenatal examinations are needed. The ultrasound screening results cannot be used to determine whether the fetus has any abnormalities. To determine whether the fetus has chromosomal abnormalities, further sex chromosome analysis is still required using chorionic villus sampling or amniocentesis.

The above is the editor’s summary of relevant materials on the question of when is the best time to do fetal nt testing. Nt test is a new item that must be checked during prenatal check-up, and it also plays a very important role in prenatal check-up. Mothers must pay enough attention to prenatal check-ups and should not simply deal with them in a simplistic manner. They should be aware of the problems found during prenatal check-ups to reduce the confusion about pregnancy.