What is the normal range of nt results?

When expectant mothers are doing NT test, they will face the NT test report. Many expectant mothers are not clear about some of the definitions in the test report. So, what does the NT value mean? Is it true that the lower the NT value, the better? What if it is higher? Next, let's learn it together!

What does NT value mean?

Regarding the results of the NT test, the nuchal translucency usually increases relatively with the growth of the baby, so what is the normal range of NT value?

In our country, doctors consider a nuchal translucency greater than 3mm to be abnormal. 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. Although 2.9mm is at the upper end of the normal range, nine times out of ten babies who measure between 2.5 and 3.5mm are completely normal.

The thicker the nuchal translucency, the higher the risk of illness for the baby. If the thickness has reached 6mm, there is a high risk of Down syndrome and other sex chromosomes, genetic syndromes and heart problems. Fortunately, not many babies have such a thick nuchal translucency.

The nuchal translucency generally increases with the growth and development of the fetus, and will gradually disappear after 14 weeks of pregnancy. In our country, doctors consider a nuchal translucency greater than 3mm to be abnormal. Due to different individual conditions, some normal fetuses have more blood, which can easily affect the accurate measurement results. If the nuchal translucency is thick, it does not necessarily mean that there is a problem with the fetus.

If the NT value is close to 3mm, pregnant women need to decide whether to conduct further tests to determine the risk of disease. Generally speaking, the thicker the nuchal translucency, the higher the risk of the fetus discovering abnormalities. If the thickness has reached 6mm, it is recommended to conduct a subsequent risk inspection to identify the disease as soon as possible.

NT value is within normal range

Generally, expectant mothers need to have their NT value checked around 10-15 weeks of pregnancy to judge the health of the fetus. If the test value is higher than the standard value, it indicates that the fetus may be deformed and further examination is required. So, how much is the normal range of NT value?

The NT value (neck translucency) refers to the thickness of the fluid accumulation in the subcutaneous tissue fluid behind the fetus's neck. When the neck translucency is greater than or equal to 2.5mm, it can be identified as thickening of the neck translucency. The degree of thickening of the neck translucency is closely related to fetal abnormalities. The more obvious the thickening of the nuchal translucency, the higher the chance of fetal abnormality and the more serious the degree of abnormality.

If repeated accurate measurements are higher than the standard value, then it is recommended that the expectant mother undergo amniocentesis to check the sex chromosomes. Check the Down's test to see if there are any abnormalities. To eliminate deformed fetuses. Most of the thickened NT will naturally disappear by 20 weeks of pregnancy. Generally, the NT value test is performed between 11 and 13 weeks of pregnancy. Generally speaking, ultrasound examination is more accurate. If the NT value is >0.3cm, amniocentesis is required to further rule out fetal malformations.

The NT value is an ultrasound measurement of the thickness of the nuchal translucency layer of the fetus at 10-14 weeks of pregnancy. Any value <2.5mm is considered normal, and any value greater than or equal to 2.5mm is diagnosed as thickening of the nuchal translucency layer. When the cyst thickens extremely, it may cause cystic hygroma in the fetal neck, which is a congenital disease.

Is the lower the NT value, the better?

NT, or nuchal translucency, refers to the maximum thickness between the skin and subcutaneous soft tissue in the sagittal cross-section of the fetal cervical vertebrae. The nuchal translucency scanner uses B-ultrasound to examine the thickness of the skin on the back of the fetus' neck to assess whether the fetus is likely to have Down syndrome. So how do we interpret the NT value? Is the lower the NT value, the better?

NT (Nucleus Translucency Scanner) is a way to assess whether the fetus may have Down syndrome. It is a screening method. Unlike confirmatory tests such as chorionic villus aspiration or amniocentesis, there is a definitive diagnosis, a confirmed karyotype. The ultrasound examination of NT depends on the doctor's diagnostic experience and the sensitivity of the ultrasound equipment. It is therefore a screening test, and the individual results can remind pregnant women to further choose which test is more appropriate.

Nuchal translucency B-ultrasound scanning is usually performed between 11 and 13 weeks and 6 days of pregnancy. Scanning before 11 weeks is technically difficult because the fetus is so small, but after 14 weeks, the excess fluid may be absorbed by the fetus's developing lymphatic system, making the results inaccurate. This type of screening is mainly done by ultrasound scanning, usually done on the abdomen, but it is also necessary to check the position of the fetus and uterus. If necessary, it should be done through vaginal B-ultrasound, which can be seen more clearly.

The nuchal translucency increases relatively with the growth and development of the fetus. Ultrasound doctors believe that the normal thickness of the fetal nuchal translucency does not exceed 2.5mm, and it is abnormal if the nuchal translucency exceeds 3mm. The thicker the nuchal translucency, the higher the risk of the baby having Down syndrome. If the thickness has reached 6mm, there is a high risk of Down syndrome and other sex chromosomes, genetic syndromes and heart problems.

Therefore, if the NT value of a pregnant woman is found to be outside the normal range during the NT test, further screening should be carried out, such as amniocentesis or chorionic villus sampling, to determine whether she has Down syndrome or other diseases.

Can NT value determine the gender of the baby?

Can NT value tell whether a man is a woman? Although there are many prenatal examinations that can tell the gender of the fetus, the NT test cannot. This is just a test to check the translucency of the fetus's neck. Through this test, it can be found out whether the fetus has any abnormalities, so that the mother can understand the condition of the fetus in time.

The NT check list cannot determine the sex of the fetus. NT is used to screen the nuchal translucency of the fetus. This is the initial test to determine whether the fetus has congenital neural tube defects.

The NT test is a test of the fetus's neck. It is commonly used in prenatal diagnosis and can diagnose chromosomal diseases at an early stage and detect fetal abnormalities caused by various reasons at an early stage. If it exceeds 3mm, it often indicates poor fetal outcome, which is usually checked with BC.

Basic obstetric B-ultrasound examinations mainly focus on the growth and general structure of the fetus. With the development and popularization of transvaginal ultrasound, more attention is paid to the proportion relationship between the various tissue structures of the fetus. Qualitative test indicators are used to predict whether the fetus has certain defects, especially chromosomal abnormalities. For example, measurement of the fetal nuchal translucency has become one of the effective methods for prenatal diagnosis of fetal chromosomal abnormalities.

Although the NT test uses B-ultrasound to observe the fetus's condition, the key to the NT test is to observe the thickness of the nuchal translucency. To determine the boy or girl, the doctor needs to use an ultrasonic device to take a picture of the fetus's sexual organs. Therefore, it is impossible to determine the sex of the fetus based on the NT test alone.