Yellow graphic with text "Mometrix CDN Practice Test. Prepare for your test with realistic questions." and an illustration of a hand filling in a test answer sheet with a pencil.

The Nephrology Nursing Certification Commission (NNCC) administers the CDN® certification exam to provide registered nurses with an opportunity to demonstrate their expertise and skills, as well as advance in their careers. Click “Start Test” above to take a free CDN practice test! CDN Exam Eligibility To be eligible for the exam, you must be a … Read more