What is a hair DNA paternity test? Hair DNA paternity testing is a technical method that uses hair samples to obtain individual DNA information and compares the genetic sequence differences between different individuals to verify the paternity relationship. Because of its keratinized structure, hair has strong corrosion resistance and is easy to obtain. It is not affected by factors such as the developmental age and status of the person being tested. It is a commonly used sample source in paternity testing. Principle of Hair DNA Paternity Test Hair DNA Paternity Test is based on the principle of DNA polymorphism. D