Utah Code Title 78B. Judicial Code § 78B-15-617. Rules for adjudication of paternity

(1) The paternity of a child having a presumed, declarant, or adjudicated father may be disproved only by admissible results of genetic testing excluding that man as the father of the child or identifying another man as the father of the child.

(2) Unless the results of genetic testing are admitted to rebut other results of genetic testing, a man identified as the father of a child under Section 78B-15-505 must be adjudicated the father of the child, unless an exception is granted under Section 78B-15-608.

(3) If the tribunal finds that genetic testing under Section 78B-15-505 neither identifies nor excludes a man as the father of a child, the tribunal may not dismiss the proceeding. In that event, the tribunal shall order further testing.

(4) Unless the results of genetic testing are admitted to rebut other results of genetic testing, a man properly excluded as the father of a child by genetic testing must be adjudicated not to be the father of the child.