Ohio Revised Code Title XXIX. Crimes Procedure § 2953.75

(A) If an eligible offender submits an application for DNA testing under section 2953.73 of the Revised Code, the court shall require the prosecuting attorney to use reasonable diligence to determine whether biological material was collected from the crime scene or victim of the offense for which the offender is an eligible offender and is requesting the DNA testing against which a sample from the offender can be compared and whether the parent sample of that biological material still exists at that point in time. In using reasonable diligence to make those determinations, the prosecuting attorney shall rely upon all relevant sources, including, but not limited to, all of the following:

(B) The prosecuting attorney shall prepare a report that contains the prosecuting attorney's determinations made under division (A) of this section and shall file a copy of the report with the court and provide a copy to the eligible offender and the attorney general.