DNA (Deoxyribonucleic Acid) is the genetic material present in every cell of the human body. Except in the case of identical multiple births, each individual’s DNA is unique. A child receives half of his or her genetic material (DNA) from the biological mother, and half from the biological father. During DNA testing, the genetic characteristics of the child are compared to those of the mother. Characteristics that cannot be found in the mother must have been inherited from the father.
DNA paternity testing is the most accurate form of paternity testing possible. If DNA patterns between the child and the alleged father do not match on two or more DNA probes, then the alleged father can be totally ruled out. If the DNA patterns between mother, child, and the alleged father match on every DNA probe, the likelihood of paternity is 99.9 percent. To conduct DNA testing, either a blood test known as Restriction Fragment Length Polymorphism (RFLP) or a procedure called a Buccal scrap is used. A swab is rubbed vigorously against the inside of the subject’s cheek. This provides a DNA sample for testing. Children can be tested at any age. Paternity testing can even be done on an umbilical cord blood specimen at birth. Since DNA is the same in every cell of the human body, the accuracy of testing performed on cheek cells utilizing the Buccal Swab is the same as an actual blood sample.