
The Certified Nephrology Nurse Examination (CNN) is administered by the Nephrology Nursing Certification Commission for registered nurses practicing in multiple areas of nephrology. The examination evaluates concepts of kidney disease across the life span, acute inpatient therapies, peritoneal dialysis, home hemodialysis, and transplant, together with applied abilities such as recognizing complications, selecting interventions, applying infection-control principles, and integrating patient education into nursing decisions.
The CNN exam contains 150 questions and allows 180 minutes for testing. This FAQ explains the examination structure, passing standard, renewal requirements, preparation considerations, clinical reasoning expectations, and appropriate uses of simulation-based practice while deferring certification policies to NNCC.
NNCC CNN — Frequently Asked Questions (FAQs)
This FAQ section summarizes key aspects of the NNCC CNN exam, including format, difficulty, and preparation. For official eligibility, policies, and updates, visit the NNCC’s official exam page.
SECTION A: NNCC CNN Exam Overview & Legitimacy
This section explains what the CNN examination represents, who it is associated with, the competencies it evaluates, and how the Certified Nephrology Nurse credential is maintained.
Q1. What is the Certified Nephrology Nurse Examination certification?