This is a follow up question to this:
The god Zoth-Ommog has been reincarnated into the world as a small child. As he grows, he will gain access to more of his power. Until such a time, he will slowly build his ministry with the help of his cult, who raise him after his mother's death. Currently however, he doesn't have access to his full power due to him being a kid. There are others who wish to stop this plan, and kill the child before any of the apocalyptic shennigans begins. To accomplish this, government forces have spent time and money to locate it.
The child may appear completely human on the outside. However, it technically has no human parents. It has no Father, as it is a reincarnated form of a god. It has no real mother, as she was simply a vessel for the demon's power. Therefore, it has no DNA or any identifiable way to prove that it is human. When these tests are done, it should show that this child is not normal at all and expose it to the authorities.
I need a way for Zoth-Ommog's biology to hide the fact that it isn't human to avoid raising suspicions about him. How can I make this possible?