DNA is not the sole determining factor when establishing parentage in Las Vegas Nevada. In some cases, the courts will establish parental rights to the non-biological parent over the biological parent. These cases are rare but there is precedence for such decisions. The Domestic Partnership Law (NRS 122A) also creates a presumption of parentage when a child is born to the relationship. Jim has the knowledge and experience you need to petition the court to establish paternity and maternity.