Arkansas LTCF Employment Clearance Registry Prometric Services: Arkansas; Prometric: Arkansas Nursing Assistant Registry Renewal Form. exam is conducted by the private company Prometric. Certified Nursing Assistant. ... is used to search for the Certified Nursing Assistant or non-CNA employees in the Arkansas LTCF Employment Clearance Registry. This Registry is maintained by PROMETRIC. Search for a Nurse Aide. This form is used to search for the Certified Nurse Aides in the New York State Registry. This Registry is maintained by PROMETRIC.