Ohio Rev. Code Ann. § 4723.75
(A) The board of nursing shall issue a certificate to practice as a dialysis technician to an applicant if the conditions of divisions (A)(1) to (5) of this section have been met:
(1) The application is submitted to the board in accordance with rules adopted under section 4723.79 of the Revised Code and includes both of the following:
(B) For an applicant to demonstrate competence to practice as a dialysis technician, one of the following must apply:
(1) The applicant has successfully completed a dialysis training program approved by the board under section 4723.74 of the Revised Code and meets both of the following requirements:
(2) The applicant does all of the following:
(C) An applicant who does not pass the certification examination described in division (B)(1)(b) of this section within the time period prescribed in that division may continue to pursue certification by repeating the entire training and application process, including doing all of the following: