CHBT Study Guide 2026

Everything you need to pass the CHBT exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

CHBT exam key facts

The BONENT Certified Hemodialysis Bio-Medical Technician (CHBT) exam consists of 150 multiple-choice questions. Source
The BONENT CHBT exam has a three-hour time limit. Source
Candidates pass the BONENT CHBT exam with a scaled score of 70 or above. Source
The BONENT CHBT exam costs $235 for the paper-and-pencil exam or $255 for computer-based testing in the USA, and $260 (paper) or $255 (CBT) at locations outside the USA. Source
BONENT CHBT candidates get up to three attempts within 12 months; after three failed attempts they must complete 8 hours of nephrology-related continuing education before retesting. Source
BONENT CHBT certification must be renewed every four years. Source

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📋 CHBT Exam Format at a Glance

150

Questions

180 min

Time Limit

70.00%

Passing Score

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📚 CHBT Topics to Study (43)

Electrical Safety and Biomedical Engineering Principles · 7 cards Electrical Safety and Biomedical Engineering Principles · 7 cards Electrical Safety and Biomedical Engineering Principles · 7 cards Biomedical Technology and Dialysis Water Treatment · 7 cards Hemodialysis Principles and Practices · 7 cards Patient Safety and Quality Assurance · 7 cards Alarm Systems and Emergency Response · 6 cards Alarm Systems and Emergency Response · 6 cards Alarm Systems and Emergency Response · 6 cards Anticoagulation in Hemodialysis · 6 cards Anticoagulation in Hemodialysis · 6 cards Anticoagulation in Hemodialysis · 6 cards Dialysate Composition and Chemistry · 6 cards Dialysate Composition and Chemistry · 6 cards Dialysate Composition and Chemistry · 6 cards Dialysis Equipment Maintenance and Troubleshooting · 6 cards Dialysis Equipment Maintenance and Troubleshooting · 6 cards Dialysis Equipment Maintenance and Troubleshooting · 6 cards Hemodialysis Principles and Practices · 6 cards Hemodialysis Principles and Practices · 6 cards Infection Control and Disinfection Procedures · 6 cards Infection Control and Disinfection Procedures · 6 cards Infection Control and Disinfection Procedures · 6 cards Infection Control in Dialysis Units · 6 cards Infection Control in Dialysis Units · 6 cards Infection Control in Dialysis Units · 6 cards Patient Safety and Quality Assurance · 6 cards Patient Safety and Quality Assurance · 6 cards Regulatory Compliance and Documentation · 6 cards Regulatory Compliance and Documentation · 6 cards

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✍️ Sample CHBT Questions & Answers

1. Which sign indicates possible stenosis in an arteriovenous fistula?

✓ High venous pressure during dialysis combined with a decreased thrill distal to the stenosis

Stenosis restricts flow, causing elevated venous pressure as blood backs up behind the obstruction. The thrill (vibration) is diminished distal to the narrowing. This warrants referral for imaging (fistulogram) and possible angioplasty.

2. When a dialysis patient experiences an adverse event such as a blood leak or machine malfunction during treatment, the technician is required to:

✓ Document the event in the patient's treatment record and complete a facility incident report per policy

Adverse events must be documented in both the patient's treatment record and an incident report to support quality review, regulatory compliance, and prevention of future occurrences.

3. Which of the following is the most critical immediate action when a patient on hemodialysis develops sudden hypotension?

✓ Place the patient in the Trendelenburg position and administer a normal saline bolus

Sudden hypotension during hemodialysis is managed by placing the patient in Trendelenburg position (legs elevated) and administering a normal saline bolus to restore circulating volume. Increasing ultrafiltration would worsen hypotension.

4. What does 'standard precautions' require in a dialysis setting?

✓ Treating all blood, body fluids, non-intact skin, and mucous membranes as potentially infectious regardless of patient diagnosis

Standard precautions apply universally to all patients. This includes hand hygiene, appropriate PPE (gloves for blood/fluid contact, gown/eye protection when splash risk exists), safe needle handling, and environmental cleaning.

5. Why should blood pressure never be measured in the arm containing an arteriovenous fistula?

✓ Cuff compression can restrict fistula blood flow and potentially cause thrombosis

BP cuff inflation compresses the fistula, interrupting high-volume flow and risking thrombosis. Additionally, venipuncture, IV lines, and tight clothing are also contraindicated in the fistula arm.

6. What is the primary safety risk if chloramines are not adequately removed from dialysis water?

✓ Hemolytic anemia from chloramine crossing the dialyzer membrane and destroying red blood cells

Chloramines pass freely through dialyzer membranes, entering the bloodstream and oxidizing red blood cell membranes, causing hemolysis and potentially fatal anemia.

🎯 Free CHBT Practice Tests

Hemodialysis Principles and Practices · 7 questions Electrical Safety and Biomedical Engineering Principles · 7 questions Electrical Safety and Biomedical Engineering Principles · 7 questions Patient Safety and Quality Assurance · 7 questions Electrical Safety and Biomedical Engineering Principles · 7 questions Biomedical Technology and Dialysis Water Treatment · 7 questions Dialysate Composition and Chemistry · 6 questions Regulatory Compliance and Documentation · 6 questions Dialysate Composition and Chemistry · 6 questions Infection Control and Disinfection Procedures · 6 questions

📖 CHBT Guides & Articles

Your CHBT Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 CHBT Flashcards (264)🏆 CHBT Exam Simulation

What Practice Test Geeks adds beyond an AI chat for CHBT

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

A timed, full-length CHBT mock exam — 150 questions in 180 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
A fixed CHBT question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
A printable CHBT cheat sheet you can print or save as a PDF.
CHBT flashcards built from the same question bank.
Free CHBT practice tests with the correct answer shown after each question.

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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

bonent.org — Exam format, time limit, renewal, score validity, test delivery, test dates, registration deadline, eligibility, fees, retake fee · verified Nov 2026