Ohio Rev. Code Ann. § 4723.73
(A) No person who does not hold a current, valid certificate issued under section 4723.75 or renewed under section 4723.77 of the Revised Code shall do either of the following:
(B) No person who does not hold a current, valid dialysis technician intern certificate issued under section 4723.76 of the Revised Code shall do either of the following:
(D) No person other than a dialysis technician or dialysis technician intern shall engage in the dialysis care that is authorized by section 4723.72 of the Revised Code, unless the person is one or more of the following:
(E) No dialysis technician intern shall do either of the following: