Presumed Father & Texas Paternity Law

Question:  Under what circumstances does a child have a "presumed" father?

Answer:  The signing of a birth certificate creates merely a presumption that a person is the father. In addition, marriage to a man at the time the child is born also creates merely a presumption that a person is the father.

Since there is a "presumed" father, meaning the mother was married to someone at the time of the birth or shortly thereafter, then under most circumstances, testing would have to occur by the fourth birthday, by the biological father. Texas Family Code 160.607.