A non-invasive pregnancy is usually referred to as a non-invasive DNA test, which is a test in which the blood of a pregnant woman is drawn to screen the fetus for chromosomal disorders.
Non-invasive DNA test is a method of screening for common aneuploid chromosome abnormalities in fetus by drawing vein blood of pregnant women in mid-pregnancy, which mainly includes 18-trisomy, 21-trisomy and 13-trisomy. It is a prenatal screening method for secondary screening of high-risk groups, such as high-risk of Down’s Syndrome, etc., and has to be operated by a specialized medical practitioner.
A positive non-invasive DNA test result means that the fetus is at an elevated risk of developing the disease, but it does not confirm the diagnosis, and further confirmatory tests, such as amniocentesis and other prenatal diagnostics, should be performed as prescribed by the doctor.
In addition to non-invasive DNA testing, it is also important to have regular checkups during pregnancy to detect abnormalities and deal with them in a timely manner.