Ohio Rev. Code Ann. § 2901.07
(A) As used in this section:
(4) "Head of the arresting law enforcement agency" means whichever of the following is applicable regarding the arrest in question:
(B)
(1)
(4)
(D) The DNA specimen collection duty set forth in division (B)(1) of this section applies to any person who is eighteen years of age or older and who on or after July 1, 2011, is arrested for or charged with any felony offense or is in any other circumstance described in that division. The DNA specimen collection duties set forth in divisions (B)(2), (3), (4)(a), (4)(b), and (5) of this section apply to any person who has been convicted of, is convicted of, has pleaded guilty to, or pleads guilty to any felony offense or any of the following misdemeanor offenses: