Ohio Rev. Code Ann. § 3111.09
(A)
(1) In any action instituted under sections 3111.01 to 3111.18 of the Revised Code, the court, upon its own motion, may order and, upon the motion of any party to the action, shall order the child's mother, the child, the alleged father, and any other person who is a defendant in the action to submit to genetic tests. Instead of or in addition to genetic testing ordered pursuant to this section, the court may use the following information to determine the existence of a parent and child relationship between the child and the child's mother, the alleged father, or another defendant:
(B)
(E) As used in sections 3111.01 to 3111.85 of the Revised Code:
(1) "Genetic tests" and "genetic testing" mean either of the following: