What does non-invasive DNA testing primarily check for in the fetus?
Dec 18, 2023
Source: Cainiu Health
Dr. Zhao Xiaodong
Introduction
Non-invasive DNA generally refers to non-invasive prenatal testing (NIPT). This technology primarily screens for fetal chromosomal abnormalities. By analyzing cell-free fetal DNA fragments in the peripheral blood of pregnant women, it assesses whether the fetus has chromosomal aneuploidies, such as trisomy 21, trisomy 18, and trisomy 13.
Non-invasive DNA generally refers to non-invasive prenatal testing (NIPT). This technology primarily screens for fetal chromosomal abnormalities. By analyzing cell-free fetal DNA fragments in the peripheral blood of pregnant women, it assesses whether the fetus has chromosomal aneuploidies such as trisomy 21 (Down syndrome), trisomy 18 (Edwards syndrome), and trisomy 13 (Patau syndrome). Specific details are as follows:
Chromosomal abnormalities are a major cause of intellectual disability, congenital malformations, and growth retardation in fetuses. Therefore, using non-invasive prenatal testing, accurate assessment of fetal chromosomal status can be achieved early in pregnancy, providing important protection for maternal and fetal health.
Non-invasive prenatal testing offers advantages such as being non-invasive, highly sensitive, and highly specific. Additionally, this method allows testing at an earlier stage of pregnancy, enabling early identification of potential risks and providing more time for subsequent clinical interventions and treatments.
However, non-invasive prenatal testing cannot be used as a definitive diagnostic tool. In clinical practice, it should be combined with other diagnostic methods such as amniocentesis and chorionic villus sampling to ensure a comprehensive evaluation. During prenatal care, pregnant women and their families should follow medical advice and choose appropriate testing methods to safeguard fetal health.
