Every state, and also the District of Columbia, has a state nurse aid registration department that can be contacted for verification of all CNA certificates issued in that state. Most states have online verifications. However, some require direct contact. A complete list all nurse registries is located at Ncdhhs.gov.
CNA certifications are state-specific, and in most states these certifications must be renewed every two years. Expiration dates, as well as renewal information and procedures, are also available from the issuing state's nurse aid registry. Certification should be verified if the certificate holder has not worked continuously as a CNA for an extended period of time. Prolonged lack of work can cause the license status to become void, making the license holder ineligible for employment as a CNA. If this occurs, the license holder needs a new license application, background check and certification exam.
Certification should also be checked regularly to verify that negative items are not on the license holder's record. These include claims such as abuse or neglect charges that have been filed with the state nursing board. Claims can negatively affect the license holder's status, causing suspension or revocation.
If the CNA holder relocates to another state, the certification is often transferable. This can be checked with the new state's nurse registry to find out the transfer requirements. Generally, new states let a verified CNA holder from another state begin working immediately while the transfer is in progress.