How much does non-invasive DNA testing cost during pregnancy? 1. What is non-invasive DNA testing? Non-invasive DNA testing is an emerging DNA testing technology that can perform fetal genome analysis through fetal cell-free DNA (cfDNA) in maternal blood without harming the fetus and pregnant women. Non-invasive DNA testing can be used to predict the gender of the fetus and detect chromosomal abnormalities, thalassemia, single-gene diseases and other genetic diseases. Compared with traditional amniocentesis and chorionic villus sampling, non-invasive DNA testing does not require surgery and the testing process is simple and fast.