Okla. Stat. tit. 10, § 10-7700-631: Rules for adjudication of paternity

The court shall apply the following rules to adjudicate the

paternity of a child:

1. The paternity of a child having a presumed, acknowledged, 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 27 of this act shall be adjudicated the father

of the child;

3. If the court finds that genetic testing under Section 27 of

this act neither identifies nor excludes a man as the father of a

child, the court may not dismiss the proceeding. In that event, the

results of genetic testing, and other evidence, are admissible to

adjudicate the issue of paternity; and

4. Unless the results of genetic testing are admitted to rebut

other results of genetic testing, a man excluded as the father of a

child by genetic testing shall be adjudicated not to be the father

of the child.