308. Presumption of parentage
A person alleged to be a parent shall be rebuttably presumed to be the natural parent of a child if:
(1) the alleged parent fails to submit without good cause to genetic testing as ordered; or
(2) the alleged parents have voluntarily acknowledged parentage under the laws of this State or any other state, by filling out and signing a Voluntary Acknowledgement of Parentage form and filing the completed and witnessed form with the Department of Health; or
(3) the probability that the alleged parent is the biological parent exceeds 98 percent as established by a scientifically reliable genetic test; or
(4) the child is born while the alleged parents are legally married to each other.