BONENT CHN Is a Dialysis Nursing Judgment Exam
The BONENT Certified Hemodialysis Nurse (CHN) credential is for nurses who practice in hemodialysis settings. Unlike technician-level dialysis exams, CHN prep has to center nursing judgment: assessment, patient education, treatment complications, vascular access, adequacy, infection prevention, staff supervision, policy, and safe escalation.
The official BONENT CHN page lists four major domains and says the exam consists of 150 multiple-choice questions with a 3-hour time limit. The current SERP is thinner than it should be for a nursing specialty exam. Many pages either sell generic practice tests or mix CHN with CHT/CCHT technician guidance. This guide keeps those roles separate and uses official BONENT pages as the source of truth.
Official CHN Snapshot
| Item | Official detail |
|---|---|
| Credential | Certified Hemodialysis Nurse (CHN) |
| Certifying body | BONENT, Board of Nephrology Examiners Nursing and Technology |
| Exam length | 3 hours |
| Questions | 150 multiple-choice questions |
| Main delivery options | Paper and Pencil Exam or Computer Based Testing |
| U.S. exam fees in BONENT handbook/FAQ | $235 PPE, $255 CBT |
| Application review | BONENT FAQ says responses are typically sent about 4 weeks after application receipt |
| Expedited application option | BONENT FAQ lists a $100 expedite option with response within 7 business days after receipt |
| Public pass score detail | BONENT pages reviewed did not publish a numeric CHN passing percentage; use official pass/fail reporting, not an unsourced cutoff |
That last row matters. Local prep pages sometimes repeat a numeric passing percentage, but I could not confirm a public numeric CHN passing cutoff in the official BONENT CHN page, eligibility/fees page, FAQ, or 2024 handbook reviewed for this post. Do not build your readiness plan around an unofficial score. Build it around domain coverage and clinical accuracy.
Eligibility: Do Not Apply Like a Technician Candidate
The official BONENT eligibility and fees page separates nurse and technician eligibility.
| Applicant type | BONENT minimum eligibility language |
|---|---|
| RN for CHN/CPDN | Valid RN license, one year of experience in nephrology, and current active participation in an ESRD facility |
| LPN/LVN for CHN or CPDN | Valid LPN/LVN license, current active participation in an ESRD facility, and two years of nephrology experience |
| Documentation | BONENT states experience must be verified by two signed and dated reference letters |
If your state nurse practice act, employer, or facility policy sets a stricter rule, follow the stricter rule. BONENT certification does not replace state licensure, employer competency validation, or facility-specific privileges.
The Four Official CHN Domains
BONENT organizes the CHN content outline into four domains.
| Domain | Weight | How to study it as a nurse |
|---|---|---|
| Supervision/Administration | 10% | Delegation, staff oversight, policy use, documentation, role boundaries, and quality systems |
| Dialysis and Related Issues | 74.5% | Treatment prescription, access, complications, adequacy, medications, patient assessment, home dialysis, reuse, water treatment, and transplantation context |
| Professional Development | 5.5% | Information sharing, research habits, staff training, and professional growth |
| Environmental Control | 10% | Chemical and biological hazards, infection control, occupational injury prevention, emergency procedures, and contamination control |
The 74.5% dialysis domain is where most study time belongs, but the exam is not just a list of dialysis facts. A CHN item can ask what the nurse should assess, what requires immediate intervention, what can be delegated, what documentation is needed, or how to educate a patient before a treatment problem repeats.
High-Yield RN-Scope Study Priorities
Use these as a study checklist after reading the BONENT outline.
| Priority | What to be able to do |
|---|---|
| Pre-treatment assessment | Connect weight gain, edema, blood pressure, access findings, labs, and patient symptoms to the treatment plan |
| Vascular access | Distinguish AV fistula, graft, and catheter risks; recognize infection, stenosis, infiltration, thrombosis, and steal symptoms |
| Intradialytic complications | Respond to hypotension, chest pain, cramps, disequilibrium, hemolysis, air embolism, dialyzer reaction, and clotting using nurse-level escalation |
| Prescription and adequacy | Interpret treatment time, blood flow, dialysate flow, UF goal, Kt/V or URR context, and missed-treatment consequences |
| Medication and labs | Understand ESA/iron context, phosphate binders, vitamin D analogs, calcimimetics, anticoagulation, potassium, calcium, phosphorus, bicarbonate, and hemoglobin trends |
| Patient teaching | Turn recurring clinical problems into teaching: fluid restriction, sodium, potassium, phosphorus, access protection, infection prevention, and adherence |
| Environmental safety | Know water-treatment risk, disinfection, biological hazards, PPE, bloodborne pathogen controls, and emergency response |
| Supervision | Separate RN decisions from technician tasks and escalate when a finding exceeds delegation or facility protocol |
This is where CHN differs from CHT or CCHT. A technician may be tested on operating and monitoring the treatment within scope. CHN candidates should expect nursing judgment around assessment, prioritization, education, supervision, and policy.
A Practical 8-Week CHN Prep Plan
| Week | Focus | Output |
|---|---|---|
| 1 | Read the BONENT CHN page, candidate handbook, and content outline | Mark each subtopic as strong, review, or weak |
| 2 | Dialysis principles, prescription, adequacy, and access | Build a one-page access and adequacy decision sheet |
| 3 | Complications and emergency response | Drill first nursing actions and escalation triggers |
| 4 | CKD/ESRD labs, medications, nutrition, and patient education | Link each lab abnormality to nursing teaching and provider escalation |
| 5 | Infection prevention, water treatment, environmental control, and occupational safety | Review facility policy plus BONENT outline language |
| 6 | Supervision, documentation, delegation, and professional practice | Practice RN-scope scenarios, not generic recall |
| 7 | Mixed timed practice | Complete two 75-question blocks with rationale review |
| 8 | Final remediation | Retest weak domains and confirm application logistics |
Working dialysis nurses should not wait until the week before the exam. Rotating shifts, fatigue, and real patient care can make unfocused studying feel productive when it is not. Use short blocks tied to one clinical decision pattern.
Application and Fee Planning
The BONENT FAQ lists U.S. exam fees of $235 for Paper and Pencil Exam and $255 for Computer Based Testing. The 2024 candidate handbook shows the same U.S. fee amounts and says CBT applicants have a 6-month window to choose when and where to test after receiving registration information. BONENT also lists additional fees, including incomplete application, withdrawals/transfers, returned check, and CBT no-show/reactivation fees.
Before mailing or submitting anything, confirm that you have:
- License documentation for your RN, LPN, or LVN status.
- The required nephrology experience for your license type.
- Two signed and dated reference letters verifying experience and role.
- Current active participation in an ESRD facility.
- The correct fee for PPE or CBT.
- Name consistency across application, license, and identification documents.
A preventable incomplete application can cost time and money. BONENT explicitly warns that applications missing required documentation can trigger an incomplete application fee.
How OpenExamPrep Can Help
| Miss type | Fix |
|---|---|
| Knowledge gap | Review the specific dialysis concept, medication, lab, or access issue |
| Scope error | Identify what belongs to RN judgment, technician tasking, provider order, or facility policy |
| Priority error | Re-rank patient safety, hemodynamic stability, access preservation, and infection risk |
| Application error | Rewrite the question as a real dialysis-unit decision and state the first nursing action |
Do not memorize answer keys. The CHN exam is more useful when you practice thinking like the nurse responsible for safe dialysis care.
Official Sources
- BONENT Certified Hemodialysis Nurse page
- BONENT Eligibility and Fees
- BONENT Candidate Examination Handbook 2024
- BONENT Frequent Questions and Answers
- BONENT Reading and Study Guides
Last source check: 2026-05-11. Confirm all fees, eligibility details, and testing logistics directly with BONENT before applying.
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