CDN Practice Test PDF (Free Printable 2026)
π Prepare for the CDN certification. Practice questions with answer explanations covering all exam domains.
CDN Practice Test PDF β Free Printable Exam Prep
Preparing for the CDN exam? A printable CDN practice test PDF lets you review questions, test your knowledge offline, and build the exam readiness that timed, screen-based testing demands. Whether you are studying at home, commuting, or revisiting weak areas on paper, a printed practice test remains one of the most effective preparation formats available. This page provides a free PDF download and a structured study guide for the CDN examination. Practice with the free CDN - Certified Dialysis Nurse practice test on PracticeTestGeeks (7 questions with answer explanations).
The CDN assessment tests candidates on the core competencies required for certification or qualification in the field. A strong preparation strategy combines repeated practice testing with targeted review of areas where accuracy falls below 70%. Use this PDF alongside the online CDN practice tests on this site for the most complete preparation experience β paper for review and annotation, online for timed simulation with instant scoring.
What the CDN Exam Covers
Candidates are tested across the primary knowledge domains that define competency in the CDN field. Each domain contributes a weighted percentage of the total scored questions. High-weight domains deserve proportionally more preparation time. The exam format is typically multiple-choice, and understanding the question structure β identifying the best answer rather than the first correct-sounding one β is as important as content knowledge.
Common high-priority areas include foundational theory, applied practice, regulations or standards governing the field, and scenario-based reasoning that tests judgment under realistic conditions. Review official exam content outlines from the certifying body to confirm current domain weights before your examination date, as content outlines are updated periodically.
How to Use This Practice Test PDF
Print the PDF, set a timer proportional to the number of questions, and complete each section without reference materials to simulate real exam conditions. After grading, categorize every incorrect answer by domain to build a targeted error log. Prioritize re-study in your weakest domains, then take an additional timed practice session to confirm improvement. Repeat the cycle until accuracy is consistently above 75% across all domains.
- The CDN exam has 150 multiple-choice questions, of which about 25 are unscored pilot questions. (Nephrology Nursing Certification Commission)
- Candidates have three hours to complete the 150-question CDN exam. (Nephrology Nursing Certification Commission)
- To pass the CDN exam, a candidate must answer approximately 74% of the test items correctly, according to NNCC's application handbook revised in June 2026. (Nephrology Nursing Certification Commission)
- The Certified Dialysis Nurse (CDN) exam fee is $350, or $300 for members of NNCC partner organizations (ANNA, ASN, NKF, NOVA). (Nephrology Nursing Certification Commission)
- A candidate who fails the CDN exam gets one chance to retake it at a reduced rate within one year. (Nephrology Nursing Certification Commission)
- The CDN credential is valid for three years from the last day of the month in which the candidate passed the exam. (Nephrology Nursing Certification Commission)
- The CDN exam is a computer-based test that candidates book through C-NET at the testing location of their choice once their application is approved. (Nephrology Nursing Certification Commission)
- To sit for the CDN exam, a nurse needs a full, unrestricted US RN license, at least 2,500 hours of in-center hemodialysis nephrology nursing in the past two years, and 30 contact hours of nephrology continuing education in the past two years. (Nephrology Nursing Certification Commission)
- CDN candidates who take the computer-based exam receive their score as soon as they finish. (Nephrology Nursing Certification Commission)
Facts verified Oct 19, 2026 against Nephrology Nursing Certification Commission. Dates that have passed are removed automatically.
CDN Exam at a Glance
| Item | Detail | Official source |
|---|---|---|
| Number of questions | 150 multiple-choice questions (about 25 unscored pilot items) | Nephrology Nursing Certification Commission |
| Time limit | 3 hours | Nephrology Nursing Certification Commission |
| Passing score | About 74% correct | Nephrology Nursing Certification Commission |
| Exam fee | $350 ($300 for ANNA/ASN/NKF/NOVA members) | Nephrology Nursing Certification Commission |
| Retake policy | One reduced-rate retake within 1 year | Nephrology Nursing Certification Commission |
| Validity | 3 years | Nephrology Nursing Certification Commission |
| Delivery | Computer-based test at a testing center (via C-NET) | Nephrology Nursing Certification Commission |
| Eligibility | Unrestricted RN license + 2,500 in-center hemodialysis RN hours in 2 years + 30 nephrology CE hours | Nephrology Nursing Certification Commission |
| Score release | Immediately on completion | Nephrology Nursing Certification Commission |
| Registration deadline | Year-round; postmark at least 4 weeks before desired test date | Nephrology Nursing Certification Commission |
| Testing window | 90 days from permit issue (one 90-day extension for $125) | Nephrology Nursing Certification Commission |
Facts verified Oct 19, 2026 against Nephrology Nursing Certification Commission. Dates that have passed are removed automatically.
Free CDN - Certified Dialysis Nurse Study Tools
Interactive CDN - Certified Dialysis Nurse resources on PracticeTestGeeks, free to start:
- CDN - Certified Dialysis Nurse flashcards β review key terms and concepts card by card
- CDN - Certified Dialysis Nurse study guide β topic-by-topic overview of what the exam covers
- CDN - Certified Dialysis Nurse cheat sheet β one-page printable summary for last-minute review
Did You Know? Passing the CDN exam on your first attempt saves both time and money. Start with diagnostic practice tests to identify weak areas.

Study Strategy for the CDN Exam
Build Your Content Foundation First
Before attempting practice tests, ensure you have reviewed the official study materials for the CDN exam. Most certifying bodies publish a candidate handbook or content outline that lists exactly what knowledge is tested. Read this document first β it tells you not only what to study but also what to ignore. Allocate study time in proportion to domain weights: spend more time on high-weight domains and less on domains you already know well.
Practice Testing and Error Analysis
Once you have reviewed the content, move to practice testing. Each practice test session should be treated as a diagnostic: the questions you answer incorrectly are more valuable than the ones you answer correctly. Keep an error log organized by domain. After three to four practice tests, patterns in your errors will become clear. These patterns tell you exactly where to concentrate additional study effort.
Final Preparation Week
In the week before the CDN exam, focus on review rather than new learning. Take one full-length timed practice test to confirm readiness, then spend the remaining days reviewing your error log and reinforcing the concepts behind your most common mistakes. Avoid cramming new material in the final 48 hours β consolidation of existing knowledge is more valuable at that stage than attempting to add new content.
- βDownload and read the official CDN candidate handbook or content outline
- βIdentify exam domains and their approximate percentage weights
- βComplete a baseline practice test to establish your starting accuracy by domain
- βBuild an error log: record every missed question by domain and reason for error
- βStudy the highest-weight CDN domain first to maximize score impact
- βTake a second timed practice test after two weeks of study to measure improvement
- βReview answer explanations for every incorrect response, not just the correct answer
- βSimulate exam conditions: no notes, timed, single sitting per practice session
- βConfirm exam registration, location, ID requirements, and permitted materials in advance
- βComplete a final full-length practice test in the week before your exam date
Free CDN Practice Tests Online
After completing this PDF, take full online CDN practice tests at CDN practice test β instant scoring with explanations for every answer. Use both formats together: this PDF for offline review and annotation, the online tests for timed simulation with immediate feedback. Together they give you the most complete CDN exam preparation available on a single platform.
Sample CDN - Certified Dialysis Nurse Practice Questions
Try these questions from our free CDN - Certified Dialysis Nurse practice tests. The correct answer and an explanation follow each question.
If Ms. Precy's spouse is disease-free, she queries the nurse as to the likelihood that any children may contract the illness. Should the nurse tell the patient that a child will?
- A. Have a 100% risk of developing the disease
- B. Have a 50% risk of developing the disease
- C. Have a 25% risk of developing the disease
- D. Have no risk of developing the disease
Answer: B. Have a 50% risk of developing the disease
An autosomal dominant illness called polycystic kidney disease typically doesn't manifest until the third or fourth decade of life. Both kidneys are affected, and the cortex and medulla swell with many, sizable cysts that eat away at the kidney tissue.
Which infection control practice is most effective in reducing catheter-related bloodstream infections in dialysis patients?
- A. Weekly antibiotic lock therapy for all catheters
- B. Strict hand hygiene and aseptic technique during catheter access
- C. Routine weekly blood cultures for catheter patients
- D. Prophylactic oral antibiotics for all catheter patients
Answer: B. Strict hand hygiene and aseptic technique during catheter access
Consistent hand hygiene and aseptic technique during every catheter access are the most evidence-based and cost-effective interventions for preventing CRBSIs.
What does the peritoneal equilibration test measure?
- A. Determine the amount of residual glucose that remains in the dialysate after a 4-hour dwell is drained.
- B. Determine the amount of glucose absorbed from dialysate and the amount of urea and creatinine filtered into the dialysate in a 4-hour dwell.
- C. Determine the patientβs serum urea and serum creatinine after a 4-hour dwell is drained.
- D. Determine the amount of urea in a 24-hour collection of drained dialysate compared to the amount of urea in the blood.
Answer: B. Determine the amount of glucose absorbed from dialysate and the amount of urea and creatinine filtered into the dialysate in a 4-hour dwell.
This is one way to gauge how well peritoneal dialysis is working. Due to their potential for rapid glucose absorption and potential requirement for shorter stay durations, patients with high rate of transport may also benefit from this test's ability to detect them. The patient could require a longer dwell time or more exchanges if not enough urea and creatinine are being filtered.
When assessing for adequate anticoagulation during hemodialysis with heparin, which test is MOST commonly used bedside?
- A. PT/INR
- B. Activated Clotting Time (ACT)
- C. aPTT drawn every 30 minutes
- D. Anti-Xa level
Answer: B. Activated Clotting Time (ACT)
The Activated Clotting Time (ACT) is a rapid bedside test used to monitor heparin anticoagulation during hemodialysis, with target typically 150β250 seconds.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- cnetnurse.com β Test delivery, fees, score release Β· verified Oct 2026
- nncc-exam.org β Score validity, passing score, registration deadline, retake policy, test dates, exam format, time limit Β· verified Oct 2026