No. Certification is only one way to identify if an interpreter is qualified. Other ways include:
Qualify interpreters based on language screening and training. Certification is only one step in guaranteeing quality in interpreting. By qualifying interpreters based on language screening and training, states can encourage interpreters to take these important steps, which will both improve the quality of interpreting in the state and prepare these interpreters for certification.
Develop a more informal assessment process. The NCIHC’s helpful Guide to Initial Assessment of Interpreter Qualifications, April 2001, can assist you in creating an assessment process.