Non invasive prenatal paternity tests are done using a blood sample from mother and alleged father. These tests allow to you establish paternity with astounding accuracy and carry absolutely no risks. Because fetal DNA finds its way into the mother’s blood stream through the placental wall, scientists can trace the DNA in the maternal blood and map the unborn child’s genetic markers. The most accurate non invasive prenatal tests use cell-free fetal DNA as opposed to nucleated DNA.
Other prenatal paternity tests such as amniocentesis and CVS, chorionic villus sampling are also possible but these carry certain risks which include damage to the baby’s limb if the needle comes into contact with the child and miscarriage. Non invasive prenatal tests for paternity are without risk. It is important to also not that non invasive tests using blood can either use cell free fetal DNA or fetal DNA enclosed in cells. Non invasive prenatal paternity tests that rely on fetal DNA enclosed in cells is less reliable than those using cell free DNA.