What items does the non-invasive DNA test check?

Non-invasive DNA testing is a prenatal screening method primarily used to detect whether a fetus has chromosomal abnormalities. By drawing peripheral blood from the pregnant woman and extracting fetal DNA fragments, followed by bioinformatics analysis using high-throughput sequencing technology, this test assesses whether the fetus has one of the three major chromosomal disorders: Down syndrome (Trisomy 21), Edwards syndrome (Trisomy 18), or Patau syndrome (Trisomy 13). These conditions are mainly characterized by intellectual disabilities and abnormal growth and development. The accuracy rate of non-invasive DNA testing can be over 99%, making it an important method for prenatal screening of fetal chromosomal abnormalities. In addition to the three major chromosomal disorders mentioned above, non-invasive DNA testing can also detect other chromosomal abnormalities, although with relatively lower accuracy. It is important to note that, although non-invasive DNA testing has a high accuracy rate, it cannot completely replace diagnostic procedures such as amniocentesis. If you have any concerns, please consult your healthcare provider.