La. R.S. 9:2720.14

If the child is alleged not to be the child of the intended parents, supported by a sworn affidavit alleging specific facts which either tend to prove or deny filiation, the court shall order genetic testing to determine the parentage of the child. If the court finds after a contradictory hearing that the child is the genetic child of the gestational carrier, the court shall issue an order recognizing her as a legal parent of the child. If any party refuses to submit to such tests, the court may resolve the question of filiation against such party or enforce its order if the rights of others and the interests of justice so require.