Certified Nephrology Nurse Exam
The CNN exam, administered by the Nephrology Nursing Certification Commission (NNCC), is a computer-based test consisting of 150 questions (130 scored, 20 unscored pretest) with a 3-hour time limit. A passing standard score of 95 is required, equivalent to answering approximately 70% of scored questions correctly. Content spans five clinical areas: concepts of kidney disease, hemodialysis, peritoneal dialysis, transplant, and acute therapies, along with professional practice standards.
150
Questions
180 min
Time Limit
70%
To Pass
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Exam Rules
- You can skip questions and return to them later
- Flag questions for review before submitting
- No feedback shown until you submit the entire exam
- Unanswered questions count as wrong — answer everything
- 10 pretest questions are mixed in and don't affect your score
- Timer auto-submits when time runs out
- Your progress is auto-saved every 30 seconds