In the event an applicant for licensure has not successfully completed the PMLEXIS examination, or its successor, required by this chapter, the Board shall administer or authorize the administration of such examination provided the applicant has received a degree of “Doctor of Podiatric Medicine” as described in § 508(a)(1) of this title. All examinations shall be graded by the testing service providing the examinations. The passing score shall be established by the testing agency.