Background

In the field of eugenics, advances in prenatal testing technology have brought hope and peace of mind to countless families. Among them, non-invasive prenatal testing (NIPT), as a revolutionary technology, has quickly become the preferred method for prenatal screening due to its high accuracy, safety and convenience. Before the advent of NIPT, prenatal testing mainly relied on invasive testing methods such as amniocentesis and chorionic villus sampling (CVS). Although these methods are highly accurate, they have certain risks. In order to overcome these limitations, scientists began to explore a safer and more convenient testing method. In 1997, scientists discovered the presence of fetal free DNA (cfDNA) in the peripheral blood of pregnant women, which laid the foundation for non-invasive prenatal testing. In 2011, NIPT was first used in clinical practice, marking the beginning of a new era for prenatal testing.