To establish the identity of the biological parents (mother or father) DNA test can be conducted. In cases of a paternity test this is the ultimate way for certain individual to make things clear to both parties. However things are getting complicated with the introduction of reproductive technologies such as in Vitro Fertilization, Egg and Sperm Donors that can be mixed up in a way. An egg implanted into a surrogate mother does not mean the mother is a maternal parent but a sperm implanted into a woman's womb if identified can always say that the owner of the sperm is always the biological father
