Paternity testing is generally referred to as DNA paternity testing, which can be done for both mother and child, and the accuracy rate can reach 99%. Half of the chromosomal genes in a child’s body come from the father and half from the mother, so it is possible to do a paternity test between mother and child.The principle of DNA paternity testing is to test a specific DNA fragment of both parties and analyze the differences in genetic information between the two parties, and then analyze the results in a precise manner to determine whether the two parties are related. DNA paternity testing is one of the most accurate types of paternity testing, and is the gold standard for determining kinship in terms of genetics, with an accuracy rate as high as 99%. When there is a need for DNA testing in the clinic, it is recommended to choose a qualified forensic institute as hospitals generally do not have the relevant business. And the collection of samples should follow the guidance of professionals to avoid affecting the identification results.