Ohio Rev. Code Ann. § 4723.03
(C) No person shall use the titles or initials "graduate nurse," "G.N.," "professional nurse," "P.N.," "graduate practical nurse," "G.P.N.," "practical nurse," "P.N.," "trained nurse," "T.N.," or any other statement, title, or initials that would imply or represent to the public that the person is authorized to practice nursing in this state, except as follows: