A pregnant woman who is 40 years old and checks for high risk non-invasive DNA needs an amniocentesis to determine if there are any abnormalities in the fetus. A non-invasive DNA screening result of high risk indicates that it suggests a high risk. This need to check for amniocentesis to determine if the fetus has any chromosomal abnormalities. Because non-invasive DNA is a prenatal screening test, not a prenatal diagnosis, the final result is based on the amniocentesis. A pregnant woman of 40 years of age is an advanced maternal age, and the risk of congenital chromosomal abnormalities in the fetus is relatively high. Non-invasive DNA suggests a high risk, so it is recommended to improve amniocentesis as early as possible. In addition, pay attention to regular obstetric examination, non-invasive dna high risk, timely consultation, under the guidance of a professional doctor, as early as possible intervention to avoid delays in the condition.