Mo. Rev. Stat. § 334.670
The board shall charge a person, who applies for examination for a license to practice as a physical therapist assistant, an examination fee. If the person does not score a passing grade on the examination, the board may refuse to issue a license. Any applicant who fails to pass the examination may reapply and be reexamined upon payment of a reexamination fee.
(L. 1996 H.B. 999, A.L. 2008 S.B. 788)