Editing DNA paternity testing (section)

===Non-invasive prenatal paternity testing===
Recent advances in [[genetic testing]] have led to the ability to identify the biological father while the woman is still pregnant. A small quantity of cell-free fetal DNA ([[cffDNA]]) is present in the mother's blood during pregnancy. This allows for accurate paternity testing during pregnancy from a blood draw without any risk of miscarriage. Research indicates that cffDNA can first be detected as early as seven weeks into the pregnancy, and its quantity increases as the pregnancy continues.<ref>{{cite journal|title="The New England Journal of Medicine "A Non-invasive Test to Determine Paternity in Pregnancy" May 3, 2012|journal=New England Journal of Medicine|volume=366|issue=18|pages=1743–1745|publisher=The New England Journal of Medicine|doi=10.1056/NEJMc1113044|pmid=22551147|year=2012|last1=Guo|first1=Xin|last2=Bayliss|first2=Philip|last3=Damewood|first3=Marian|last4=Varney|first4=John|last5=Ma|first5=Emily|last6=Vallecillo|first6=Brett|last7=Dhallan|first7=Ravinder|doi-access=free}}</ref><ref>{{Cite journal |last=Bloomfield |first=Frank |date=2009-07-01 |title=The peri-conceptional origins of the life-long physiological consequences of being a twin |url=https://doi.org/10.36866/pn.75.31 |journal=Physiology News |issue=Summer 2009 |pages=31–33 |doi=10.36866/pn.75.31}}</ref>