Ohio Rev. Code § 3111.11
If the person against whom an action is brought pursuant to sections 3111.01 to 3111.18 of the Revised Code does not admit in his answer the existence or nonexistence of the father and child relationship, the court shall hold a pretrial hearing, in accordance with the Civil Rules, at a time set by the court. At the pretrial hearing, the court shall notify each party to the action that the party may file a motion requesting the court to order the child's mother, the alleged father, and any other person who is a defendant in the action to submit to genetic tests and, if applicable, to the appropriate tests referred to in section 3111.10 of the Revised Code. When the court determines that all pretrial matters have been completed, the action shall be set for trial.
R.C. § 3111.11