nt is the earliest detector test done after pregnancy, mainly ultrasound to measure the thickness of the child’s nuchal translucency, mainly to detect newborns with Down’s syndrome and congenital heart disease. The normal value is not more than 2.5mm, 0.08 is the normal range, so don’t worry, and this value is not much reference value, because the child is now small and imperfect development, just a rough screening. You can wait until the fetus is older to do the relevant tests, and wait until the child is about 4 months old to do the Down’s syndrome screening, the results of Down’s syndrome screening is relatively accurate. You can also do amniocentesis or non-invasive DNA for a higher accuracy rate. By the time your child is 5 months old, you can basically rule out congenital heart disease by doing a 4D macroanalysis. It is important to have regular prenatal checkups during pregnancy, so that any problems can be dealt with promptly.