200+ Free CNN Practice Questions
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Key Facts: CNN Exam
150
Exam Questions
NNCC
70%
Passing Score
Scaled score 95
3 hrs
Exam Duration
NNCC
$350
Exam Fee
NNCC
45%
Hemodialysis
Largest section
3 years
Certification Validity
NNCC
The CNN exam has 150 questions in 3 hours with a passing score of 70% (scaled score 95). The five content areas are: Renal Disease and Pathophysiology (20%), Hemodialysis (45%), Peritoneal Dialysis (15%), Transplantation and Home Therapies (10%), and Professional Issues (10%). Requires RN license and 2,000+ hours nephrology experience. Certification valid for 3 years. Exam fee is $350.
About the CNN Exam
The CNN (Certified Nephrology Nurse) exam validates expertise in nephrology nursing care. It covers renal disease pathophysiology, hemodialysis, peritoneal dialysis, transplantation and home therapies, and professional issues. The exam tests knowledge of acute and chronic kidney disease, dialysis principles, vascular access, complications management, and patient education.
Questions
150 scored questions
Time Limit
3 hours
Passing Score
70% (Scaled score 95)
Exam Fee
$350 (NNCC (Nephrology Nursing Certification Commission))
CNN Exam Content Outline
Hemodialysis
Dialysis principles, vascular access, machine operation, treatment delivery, complications management, patient assessment, water treatment, and dialyzer reuse
Renal Disease and Pathophysiology
Acute kidney injury, chronic kidney disease, end-stage renal disease, electrolyte imbalances, acid-base disorders, anemia management, and bone disease
Peritoneal Dialysis
PD modalities, catheter care, infection control, complications, and patient education
Transplantation and Home Therapies
Transplant evaluation, immunosuppression, complications, home hemodialysis, and nocturnal dialysis
Professional Issues
Patient education, ethics, legal issues, quality improvement, infection control standards, and regulatory requirements
How to Pass the CNN Exam
What You Need to Know
- Passing score: 70% (Scaled score 95)
- Exam length: 150 questions
- Time limit: 3 hours
- Exam fee: $350
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CNN Study Tips from Top Performers
Frequently Asked Questions
What is the CNN certification?
CNN (Certified Nephrology Nurse) is a certification from the NNCC for registered nurses specializing in nephrology. It validates expertise in renal disease management, hemodialysis, peritoneal dialysis, transplantation, and professional nursing issues in dialysis settings.
How many questions are on the CNN exam?
The CNN exam has 150 multiple-choice questions with a 3-hour time limit. The passing score is 70% (scaled score of 95). Hemodialysis is the largest content area at 45% of the exam.
What are the prerequisites for the CNN exam?
You need an active RN license, at least 2,000 hours of nephrology nursing experience, and 30 hours of continuing education in nephrology within the last 3 years. Experience must be within the last 2 years.
What is the most heavily tested topic on the CNN exam?
Hemodialysis accounts for 45% of the exam — nearly half of all questions. Focus on dialysis principles, vascular access (AVF, AVG, catheters), machine operation, complications (hypotension, cramping, air embolism), and water treatment.
How should I prepare for the CNN exam?
Plan for 150-200 hours of study. Master hemodialysis principles (45% of exam). Study renal pathophysiology, electrolyte management, and acid-base disorders. Know peritoneal dialysis modalities and complications. Understand transplant immunosuppression basics. Complete 200+ practice questions with detailed explanations.