Non-invasive DNA does not determine who the father is, and a paternity test is required to determine parentage. Non-invasive DNA test is only to check the DNA fragment of the fetus, mainly the genetic information of the fetus, so as to detect whether the fetus suffers from the three major chromosomal disorders of trisomy 21 (Down’s Syndrome), trisomy 18 (Edward’s Syndrome), and trisomy 13 (Patau’s Syndrome), and so on. Non-invasive DNA only screens for chromosomal abnormalities and does not include a paternity testing component. Paternity testing routinely tests samples, specifically: blood, buccal swabs, hair with follicles, and so on. Non-invasive DNA takes a blood sample that can be added for paternity testing, called prenatal non-invasive paternity testing, which usually takes 6 weeks before the presence of paternity can be detected through the pregnant woman’s venous blood. Non-invasive DNA does not determine who the father is, and pregnant mothers who want to clarify who the father is can do so with other tests.