Is it too late to do nt at 13 weeks?

As one of the new items of prenatal check-up, NT test, I believe that for many expectant mothers, the term NT test is still relatively unfamiliar. Well, let me give you a detailed introduction on what the NT test is, how to read the results of the NT test, as well as the time and cost of the NT test and other related issues.

It is not too late to do NT at 13 weeks

NT can be done between 11 and 13 weeks 6. It cannot be done beyond 13 weeks 6. The measurement of size will be inaccurate. This indicates uterine effusion. Remember to stay in bed. If it is larger than normal, your embryo may have implanted early, so the baby is larger. You may have implanted late. Normally, NT should be done between 11 and 13 weeks 6. You can go and have a look. Considering threatened miscarriage, remember to stay in bed and receive tocolysis treatment. As long as it is small, it is not a big problem.

What does NT check?

NT test is one of the new items of prenatal check-up, but many mothers are not very familiar with this new item. In fact, the NT test, also known as the nuchal translucency scanner, is a way to assess whether the fetus has Down syndrome, and it is quite accurate.

So, what does the NT test check?

1. Babies with Down syndrome will have water retention in the subcutaneous tissue, so the skin behind the neck will be thicker. If the NT test shows that the thickness of the fetal neck skin exceeds the standard value, it may be related to abnormalities in the fetal chromosomal karyotype and other anatomical abnormalities. The thicker the NT, the greater the chance of fetal anatomical abnormalities and chromosomal abnormalities.

2. In addition to detecting the risk of chromosomal abnormalities, thickening of the fetal nuchal translucency is also related to congenital heart disease.

If the NT test result exceeds the index range, pregnant women are advised to conduct subsequent fetal abnormality screening to further determine the risk of fetal abnormalities so that countermeasures can be taken as soon as possible.

This type of screening is mainly done by ultrasound scanning, usually on the expectant mother's abdomen, but it is also necessary to check the position of the baby and uterus. If necessary, it should be done through vaginal B-ultrasound, which can be seen more clearly.

In order to accurately measure the pregnancy, the ultrasound doctor will measure the baby's arm-head diameter and the width of the nuchal translucency. Under B-ultrasound, the baby's skin looks like lines, and the fluid under the skin looks gray-black. In this section, the baby looks very clear, and you can see his head, spine, limbs, hands and feet. Although some major abnormalities may be eliminated in this B-ultrasound, it is still recommended that expectant mothers have a detailed B-ultrasound at 20 weeks.

NT test results

The purpose of fetal NT examination is to diagnose chromosomal diseases and detect fetal abnormalities caused by various reasons at an early stage of pregnancy. So, how should we view the NT test results?

Experts say that during the 11th to 14th week of pregnancy, if the fetus is a "Down syndrome baby" or has poor heart development, the nuchal translucency will become thicker. Thickening of the nuchal translucency is related to the fetal chromosome karyotype, congenital heart disease and other malformations. The thicker the nuchal translucency, the greater the chance of fetal abnormalities.

Of course, as a preliminary screening method, the NT test can only assess the risk of a baby suffering from Down syndrome and other chromosomal abnormalities. It cannot accurately determine whether your baby is sick, but it can help expectant mothers decide whether they need to carry out the next diagnostic test, such as amniocentesis.

Generally, if you go to the hospital for an NT test, the results can be known immediately. In the test report, you can see the thickness of the baby's nuchal translucency. If the final measurement value is less than 3mm, it is normal. If it exceeds 3mm, further examination should be considered, such as amniocentesis.

If the nuchal translucency is thick, it does not necessarily mean that there is something wrong with the baby. Some normal babies also have more fluid. When it exceeds 3 cm, the thicker the nuchal translucency, the higher the risk of the baby getting sick.

According to relevant data statistics, the detection rate of Down syndrome can reach more than 85% when the NT test is combined with the mother's age screening and then coordinated with the maternal blood screening, which is much higher than the maternal blood screening alone (60%).

NT Check Time

NT is the abbreviation of nuchal translucency, which refers to the "neck transparent layer", that is, the maximum thickness between the skin and subcutaneous soft tissue at the horizontal sagittal surface of the fetal cervical vertebrae. The NT test is a measurement of this indicator. So, when should expectant mothers do NT test?

The NT test is best done between 11 and 14 weeks of pregnancy. Testing beyond 14 weeks will be inaccurate and is earlier than the time for Down syndrome. NT examination is mainly carried out through B-ultrasound measurement. If the final measurement value is less than 3mm, it is normal. If it exceeds 3mm, further examination should be considered, such as amniocentesis.

According to relevant data statistics, the diagnosis rate of Down syndrome can reach more than 85% through NT examination and then combined with blood test. In addition to pregnant women who have decided to do amniocentesis, it is best for expectant mothers to do maternal blood screening for Down syndrome and fetal nuchal translucency examination to ensure that they give birth to healthy babies.

The purpose of nuchal translucency examination is to diagnose chromosomal disorders and detect fetal abnormalities caused by various reasons at an early stage of pregnancy.

Because the study found that during the 11th to 14th week of pregnancy, if the fetus is a Down syndrome baby or has poor heart development, the nuchal translucency will become thicker. Thickening of the nuchal translucency is related to the fetal chromosome karyotype, congenital heart disease and other malformations. The thicker the nuchal translucency, the greater the chance of fetal abnormalities.

NT examination fee

NT is the abbreviation of nuchal translucency, which refers to the nuchal transparent layer, that is, the maximum thickness between the skin and subcutaneous soft tissue at the sagittal level of the fetal cervical vertebrae. The purpose of nuchal translucency examination is to diagnose chromosomal disorders and detect fetal abnormalities caused by various reasons at an early stage of pregnancy. So, how much does the NT inspection cost?

In fact, the price may vary from region to region, generally between 100 yuan and 400 yuan. The factors that affect the cost of NT examination are mainly divided into two categories:

1. Choose a hospital clinic:

Generally speaking, it is better to choose a large hospital because it has advanced medical equipment and outstanding obstetricians. The price of normal delivery is relatively more expensive than that of ordinary clinics and small and medium-sized hospitals, but it will have more safety precautions. Therefore, obstetricians recommend that mothers choose a reliable large and medium-sized comprehensive hospital for NT examination.

2. Whether it belongs to a medical insurance company:

Some hospitals belong to designated medical insurance hospitals. If the mother who undergoes NT examination has maternity insurance, the expenses can be reimbursed, but the reimbursement limit is different for each hospital. However, it should be noted that prenatal examinations must be conducted within the scope of maternity insurance requirements, otherwise the expenses will not be reimbursed.