PracticeVideosBlogFlashcards
All Practice Exams

Free Practice Questions for BONENT CHN

Exam-style questions and explanations by OpenExamPrep.

✓ No registration✓ No credit card
144+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More BONENT Nephrology Technology Certifications

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

BONENT CHT Certified Hemodialysis Technologist

Practice Questions136 questionsStudy Guide23 topicsFree CE

CPDN

Practice Questions200 questionsFree CE

BONENT CHBT Certified Hemodialysis Biomedical Technician

Practice Questions100 questionsFree CE

BONENT CHWS Certified Hemodialysis Water Specialist

Practice Questions100 questionsFree CE

More From This Family

Videos and articles for deeper review.

ArticleBONENT CHN Exam Guide 2026: Certified Hemodialysis Nurse Prep14 min read
Exam Review

Key Facts: BONENT CHN Exam

150

Multiple-Choice Questions

BONENT

3 hrs

Exam Length

BONENT

70 scaled (1–100 scale)

Passing Score

BONENT

US PPE $235; international PPE $260; CBT $255

Exam Fee

BONENT

RN: 1 year; LPN/LVN: 2 years

Nephrology Experience

BONENT current eligibility

4 years

Certification Validity

BONENT

BONENT CHN has 150 multiple-choice questions and a three-hour limit. Passing requires a scaled score of 70 on the 1–100 scale. Eligibility includes a valid RN license with one year of nephrology experience or LPN/LVN license with two years, plus current ESRD participation. Fees depend on testing format and location.

Sample BONENT CHN Practice Questions

Try these sample questions to review concepts for the BONENT CHN exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 144+ question experience with AI tutoring.

1According to the KDIGO 2024 CKD classification, a patient with an estimated glomerular filtration rate (eGFR) of 22 mL/min/1.73 m^2 falls into which CKD stage?
A.Stage G2
B.Stage G3a
C.Stage G3b
D.Stage G4
Explanation: CKD stage G4 is defined as an eGFR of 15-29 mL/min/1.73 m^2 (severely decreased GFR). Patients in stage G4 are typically referred to nephrology for transplant evaluation and dialysis access planning before stage G5 (eGFR <15) when renal replacement therapy is usually initiated.
2A predialysis CKD patient reports fatigue, pruritus, anorexia, and a metallic taste. The nurse recognizes these as classic signs of:
A.Hypocalcemia
B.Uremic syndrome
C.Iron deficiency anemia
D.Acute glomerulonephritis
Explanation: Uremic syndrome results from accumulation of nitrogenous wastes and middle molecules when GFR is severely reduced. Hallmark symptoms include fatigue, pruritus, anorexia, nausea, metallic or 'fishy' taste (uremic fetor), pericarditis, and asterixis. Persistent uremic symptoms despite optimal medical therapy are an indication to initiate dialysis.
3Which equation does the National Kidney Foundation currently recommend for estimating GFR in adults using serum creatinine?
A.Cockcroft-Gault formula
B.MDRD 4-variable equation
C.CKD-EPI 2021 creatinine equation (race-free)
D.Schwartz pediatric formula
Explanation: The CKD-EPI 2021 creatinine equation, which removed the race coefficient, is the current NKF/ASN recommended equation for estimating GFR in adults. It uses age, sex, and serum creatinine. The race-free version was endorsed in 2021 to address health-equity concerns with the prior race coefficient.
4Per KDIGO 2017 CKD-MBD guidelines, which laboratory pattern is characteristic of secondary hyperparathyroidism in advanced CKD?
A.Elevated calcium, low phosphate, low PTH
B.Low calcium, elevated phosphate, elevated PTH
C.Elevated calcium, elevated phosphate, low PTH
D.Low calcium, low phosphate, elevated PTH
Explanation: Secondary hyperparathyroidism in CKD develops as failing kidneys retain phosphate and lose the ability to convert vitamin D to its active form (calcitriol). Hyperphosphatemia, reduced calcitriol, and resulting hypocalcemia stimulate the parathyroid glands to secrete PTH. The classic pattern is therefore low calcium, elevated phosphate, and elevated PTH.
5Per KDIGO, CKD is defined as abnormalities of kidney structure or function present for at least:
A.1 month
B.3 months
C.6 months
D.12 months
Explanation: KDIGO defines CKD as abnormalities of kidney structure or function present for >3 months with implications for health. The 3-month criterion distinguishes CKD from acute kidney injury, which can resolve within days to weeks.
6A hemodialysis patient has serum phosphate 7.8 mg/dL, calcium 8.6 mg/dL, and intact PTH 950 pg/mL despite phosphate binders and active vitamin D. Which medication class most directly suppresses PTH secretion at this point?
A.Loop diuretic
B.Calcimimetic (cinacalcet or etelcalcetide)
C.Beta-blocker
D.Sevelamer carbonate
Explanation: Calcimimetics such as cinacalcet (oral) and etelcalcetide (IV, post-dialysis) sensitize the calcium-sensing receptor on parathyroid cells, lowering PTH while also tending to lower calcium and phosphate. They are first-line for severe secondary hyperparathyroidism in dialysis patients per KDIGO 2017.
7Which finding most strongly suggests that an outpatient should be started on chronic hemodialysis?
A.Stable eGFR of 28 mL/min/1.73 m^2 with no symptoms
B.Asymptomatic proteinuria of 1.5 g/day
C.Uremic pericarditis on echocardiogram
D.Microscopic hematuria
Explanation: Uremic pericarditis is an absolute indication for urgent initiation of dialysis. Other absolute indications include uremic encephalopathy, refractory hyperkalemia, severe metabolic acidosis, and volume overload unresponsive to diuretics (mnemonic: AEIOU).
8Per KDIGO 2017 CKD-MBD, which serum phosphate target is recommended for adults on maintenance dialysis?
A.Lower elevated phosphate toward the normal range
B.Maintain phosphate strictly at 2.0-3.0 mg/dL
C.Maintain phosphate at 6.0-7.5 mg/dL
D.Avoid measuring phosphate routinely
Explanation: KDIGO 2017 recommends lowering elevated serum phosphate toward the normal range in dialysis patients, rather than aiming for a fixed numeric target. Severe hyperphosphatemia is associated with vascular calcification and cardiovascular mortality. Phosphate is monitored at least monthly in HD patients.
9In hemodialysis, the movement of solute across the semipermeable membrane down a concentration gradient is termed:
A.Ultrafiltration
B.Convection
C.Diffusion
D.Osmosis
Explanation: Diffusion is the passive movement of solutes across a semipermeable membrane from an area of higher concentration to lower concentration, driven by a concentration gradient. It is the principal mechanism for removing small solutes such as urea and creatinine in hemodialysis.
10Ultrafiltration during hemodialysis is achieved primarily by:
A.A hydrostatic pressure gradient across the dialyzer membrane
B.A glucose concentration gradient in the dialysate
C.A diffusion gradient between blood and dialysate
D.A pH gradient between blood and dialysate
Explanation: Ultrafiltration in hemodialysis is created by a transmembrane pressure (TMP) gradient — a positive pressure on the blood side and/or negative pressure on the dialysate side. The volume of plasma water removed is calculated as TMP multiplied by the dialyzer's ultrafiltration coefficient (KUf).

About the BONENT CHN Exam

The BONENT CHN is a hemodialysis nursing credential with RN and LPN/LVN eligibility pathways. It assesses patient care, supervision, home dialysis, transplantation, technical systems, professional development and environmental safety.

Exam sponsor: BONENT (Board of Nephrology Examiners Nursing and Technology). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

150 questions

Time Limit

3 hours

Passing Score

70 scaled (1–100 scale)

Exam / Certification Fees

US PPE $235; international PPE $260; CBT $255

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

10%

Supervision and Administration

Staffing, standards of care, personnel policies, ethics, current technology and equipment evaluation

74.5%

Dialysis and Related Issues

Patient care; setup, initiation, monitoring and termination; home dialysis; reuse; water treatment; and transplantation

5.5%

Professional Development

Professional literature and organizations, research design and implementation, and staff training

10%

Environmental Control

Chemical and biological hazards, infection control, occupational injury prevention and emergency response

Preparing for the BONENT CHN Exam

What You Need to Know

  • Passing score: 70 scaled (1–100 scale)
  • Exam length: 150 questions
  • Time limit: 3 hours
  • Exam / certification fees: US PPE $235; international PPE $260; CBT $255 Official sources

Using Our Practice Resources

  • Work through all 144 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

BONENT CHN: Suggested Study Strategy

1Use BONENT’s detailed four-domain outline, including home care, transplant, research and staff training.
2Interpret clinical guidance by publication date and patient population; distinguish recommendations from US drug labeling and CMS regulations.
3Recalculate UF, URR, Kt/V, RO rejection and calcium ratios using consistent units.
4Practice safe priorities for hypotension, hemorrhage, hemolysis, air, anaphylaxis and utility failures.
5Review individualized access planning, clinical monitoring, infection prevention and the applicable state scope rules.

Frequently Asked Questions

What is the format and passing score of BONENT CHN?

BONENT publishes 150 multiple-choice questions and a three-hour limit. Passing requires a scaled score of 70 on a 1–100 scale, not a published raw 70% requirement. CBT results are printed after testing; paper results normally arrive by mail in three to four weeks.

Who is eligible for BONENT CHN?

The current BONENT nurse criteria require a valid RN license and at least one year of nephrology experience, or a valid LPN/LVN license and at least two years. Applicants must be currently active in an ESRD facility and provide the required supervisor and nephrology-professional reference letters. BONENT publishes a previous-supervisor process for qualifying unemployed applicants.

How much does the CHN examination cost?

BONENT lists paper-and-pencil testing at $235 in the United States and $260 outside the United States. Computer-based testing is $255. These distinctions are by testing format and location, not member status. The annual certification fee is $65; other processing fees may apply.

What topics does CHN cover?

The four domains are Supervision and Administration 10%, Dialysis and Related Issues 74.5%, Professional Development 5.5%, and Environmental Control 10%. The detailed outline includes home dialysis, transplant care, research, staff training and occupational emergencies as well as clinical and equipment topics.

How does CHN differ from technician credentials?

CHN is a nursing credential with RN and LPN/LVN eligibility pathways. BONENT CHT and NNCC CCHT are technician credentials. Certification does not expand state nursing or technician scope; duties depend on licensure, jurisdiction, training and facility requirements.

How should I prepare for CHN?

Use the current BONENT outline to identify gaps, study nephrology nursing concepts and applicable clinical guidance, and practice calculations and patient-safety decisions. A study schedule depends on prior experience; no fixed number of hours or practice score guarantees passing. OpenExamPrep provides independent free study material.

What is the BONENT retake and recertification policy?

BONENT allows three examination opportunities in twelve months. After that, candidates must complete the specified eight nephrology continuing-education hours or an educational program and provide documentation. Certification has a four-year cycle. The continuing-education recertification option requires forty contact hours, including at least thirty nephrology-based Group A hours; BONENT also publishes other options.