CNA ability check is an essential step you must take before attempting the certification exam and particularly the CNA clinical skills test as it will give you an evaluation of your preparedness for the practical test. You have many options to carry out this reassessment and you may choose the one that suits you the best.
Specialization and continuing education can help you in fetching higher salaries so it will be an advantage if you take up these courses, but make sure that you want to work in these special settings as the job can be more strenuous as compared to working in normal settings.
Some states have made it mandatory that licensed CNAs should take refresher exams every two years to keep them updated with the new techniques emerging; if the CNA has not completed the refresher programs then the license renewal is denied in these states. Some practicing nursing assistants take initiative and join such programs to reassessment their abilities.
CNA is a hands-on profession, so periodic CNA skills review is necessary to put in best practices and is a very good tool to reassessment your craft for the clinical paper and pass it along with the theory paper and get certified.