Ohio Rev. Code § 4777.02: Unauthorized use of titles.

No person shall assume or use the title or designation "Certified Industrial Hygienist," "Certified Associate Industrial Hygienist," "Certified Safety Professional," or "Associate Safety Professional," or any of the abbreviations "CIH," "CAIH," "CSP," or "ASP," unless the person has been awarded the title by the American board of industrial hygiene or the board of certified safety professionals as specified in section 4777.03 of the Revised Code.