- BONENT does not publish a public CHT pass rate, so treat any specific number you see elsewhere with skepticism.
- Passing requires a scaled score of 70 out of 100 - not 70% raw questions correct.
- Patient Care (45%) and Infection Control (18%) together make up nearly two-thirds of the 150-question exam.
- After every third unsuccessful attempt, BONENT requires 8 nephrology continuing-education hours before you can retest.
Why There's No Official CHT Pass Rate Published
If you've searched for a hard percentage - "X% of candidates pass the CHT exam" - you've probably noticed that BONENT (the Board of Nephrology Examiners Nursing & Technology) does not publish an aggregate pass rate for the Certified Hemodialysis Technologist/Technician credential. That's different from some other certification programs that release annual statistics. It also means any blog, forum post, or study guide that quotes a specific CHT pass-rate figure is likely guessing, recycling an outdated number, or - worse - confusing this credential with an entirely different "CHT" designation from another field.
This article won't invent a number either. Instead, it looks at what BONENT's own published exam mechanics, scoring model, and domain structure tell you about difficulty and outcomes - which is far more useful for planning your prep than a single average statistic would be anyway. A national pass rate doesn't tell you anything about your own preparation gaps; the structure of the exam does.
How BONENT Scoring Actually Works
One of the most misunderstood facts about the CHT exam is the scoring model itself. Passing requires a scaled score of at least 70 on a 1-100 scale - this is not the same as answering 70% of the 150 questions correctly. Scaled scoring typically adjusts for item difficulty across exam forms, meaning the raw number of correct answers needed to reach a 70 scaled score can vary slightly depending on which version of the exam you receive.
Practically, this means two things for candidates:
- You cannot precisely predict your outcome by counting how many questions you feel confident about during the test.
- Consistent performance across all five domains matters more than acing one section and guessing on another, since the scaled score reflects your overall pattern of responses.
For a full breakdown of exactly what the scaled score means and how to interpret it, see CHT Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Don't study to "get 70% of questions right." Study to perform evenly across Patient Care, Machine Technology, Water Treatment, Infection Control, and Education/Professional Development - that's what the scaled score rewards.
Domain Weighting and Why It Drives Outcomes
The single biggest factor influencing whether a candidate passes or fails isn't luck - it's whether their study time matched the exam's actual content weighting. BONENT's blueprint is heavily front-loaded toward clinical patient management:
| Domain | Weight | Relative Impact |
|---|---|---|
| Patient Care | 45% | Largest domain by far - roughly 68 of 150 questions |
| Infection Control | 18% | Second-largest - roughly 27 questions |
| Water Treatment | 15% | Technical, detail-heavy content |
| Machine Technology | 12% | Equipment and troubleshooting focus |
| Education and Professional Development | 10% | Smallest, but still scored |
Candidates who fail often report the same pattern in retrospect: they over-invested in memorizing machine components or water-treatment specs while underestimating how much of the exam tests real-world patient-care judgment - vascular access complications, intradialytic emergencies, vital-sign interpretation, and patient safety protocols. Since Patient Care alone accounts for nearly half the exam, a candidate who is shaky in that single domain has a very narrow margin for error everywhere else.
Patient Care (45%)
This is the domain that determines most outcomes. Candidates must be fluent in pre-, intra-, and post-dialysis assessment, vascular access care, complication recognition, and emergency response.
- Recognizing signs of hypotension, disequilibrium syndrome, and access complications
- Correct sequencing of initiation and termination procedures
- Patient monitoring documentation and escalation protocols
Infection Control (18%)
The second-heaviest domain, testing standard precautions, dialysis-specific infection prevention, and outbreak response.
- Bloodborne pathogen precautions specific to dialysis settings
- Water and dialysate contamination prevention
- Reprocessing and disinfection standards
For a complete breakdown of all five domains - including Water Treatment, Machine Technology, and Education/Professional Development - see CHT Exam Domains 2026: Complete Guide to All 5 Content Areas.
Who Tends to Struggle on the CHT Exam
Because BONENT doesn't release demographic pass-rate breakdowns, this section is drawn from the exam's structural realities rather than statistics - but the pattern is consistent with what the exam actually tests. Three groups tend to find the CHT exam harder than expected:
- Newer technicians relying only on the six-month minimum experience. Meeting the bare eligibility threshold of six months of nephrology patient-care experience doesn't guarantee broad exposure to every complication type or water-treatment scenario the exam covers.
- Experienced technicians who skip formal review. Hands-on familiarity with your own unit's machines and protocols doesn't always translate into recognizing how BONENT phrases scenario-based questions across all five domains.
- Candidates who under-prepare for Water Treatment and Machine Technology. These combine for 27% of the exam, but they're often the least-practiced domains for technicians whose daily role is more patient-facing than technical.
If you're trying to gauge your own readiness realistically, How Hard Is the CHT Exam? Complete Difficulty Guide 2026 walks through the format constraints - 150 questions, three hours, closed-book, no calculators or outside references - that shape how demanding the test actually feels under real conditions.
What Happens If You Don't Pass
BONENT's retake structure is worth understanding before you sit for the exam the first time, because it changes how you should think about "good enough" preparation. There's no cap preventing you from retesting, but there is a continuing-education checkpoint built in: after every third unsuccessful examination attempt, BONENT requires eight nephrology continuing-education hours before you can test again.
This means the real cost of not passing isn't just the retake fee - it's the exam fee again ($255 computer-based or $235 paper-and-pencil for U.S. candidates), plus potential scheduling delays, plus additional CE requirements if you reach that third-attempt threshold. Candidates who treat their first attempt seriously, using the full scope of the CHT Study Guide 2026: How to Pass on Your First Attempt, generally avoid this cycle entirely.
It's also worth noting that computer-based testing must be completed within six months of your confirmation date, so delaying prep too long after registering can force you into a rushed testing window. For exact registration timing and deadlines, see CHT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Key Takeaway
Budget for one serious attempt rather than planning to "learn from" a first failed try. The financial and scheduling cost of retesting is real, and the third-attempt CE requirement adds friction most candidates want to avoid.
A Domain-Aligned Prep Timeline
Generic study advice - spaced repetition, timed drills, active recall - only helps if it's pointed at the right material in the right proportions. Because Patient Care and Infection Control together make up 63% of the exam, your calendar should reflect that weighting rather than splitting time evenly across five domains.
Patient Care Deep Dive
- Vascular access types and complications
- Intradialytic complication recognition and response
- Pre/post-treatment assessment sequencing
Infection Control
- Standard and dialysis-specific precautions
- Reprocessing and disinfection protocols
- Outbreak and exposure response
Water Treatment
- Water purification stages and testing
- Dialysate composition and quality checks
Machine Technology
- Dialyzer function and troubleshooting
- Alarm response and equipment safety checks
Education/Professional Development + Full Review
- Patient education principles and scope-of-practice topics
- Take BONENT's official 50-question practice exam ($60) under timed conditions
- Revisit weak domains identified from the practice exam
Notice that Patient Care gets two full weeks up front - proportional to its 45% weight - while Education and Professional Development, at only 10%, gets folded into the final review week. This is the core idea behind domain-weighted studying: match your hours to the blueprint, not to your comfort level with each topic. For a structured walkthrough of building this kind of plan around BONENT's official eligibility and registration steps, see CHT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
How to Read Your Own Odds Realistically
Since there's no public pass-rate figure to lean on, the most honest way to estimate your own readiness is to simulate the real conditions of the exam: 150 questions, three hours, no notes, no calculator, and a scoring model that rewards balance across domains rather than mastery of just one. Running full-length timed practice sessions on the CHT practice test platform is one of the few ways to get a realistic read on where you stand before exam day, since it mirrors the pacing pressure of the actual test rather than untimed flashcard review.
It's also worth remembering that eligibility pathways affect how "ready" different candidates are on day one. Graduates of BONENT-approved programs can apply within two years of completion without the standard six-month patient-care experience requirement, while candidates with more than four years of dialysis experience may qualify for a diploma-documentation waiver. Neither pathway changes what's tested - only who's allowed to sit for it. If you're unsure whether you meet the standard route or an alternative pathway, the eligibility rules are laid out in detail in CHT Requirements 2026, and the full fee structure - including the $100 optional expedited processing and the four-year, $240 prepaid maintenance option - is broken down in CHT Certification Cost 2026: Complete Pricing Breakdown.
Finally, don't underestimate the value of drilling with realistic question formats before you ever see the real exam. Reviewing condensed reference material like the CHT Cheat Sheet 2026: One-Page Review of Must-Know Facts alongside full practice runs on our practice exam platform helps close the gap between "I recognize this concept" and "I can answer this correctly under timed pressure" - which is ultimately the gap that separates a pass from a retake.
Frequently Asked Questions
No. BONENT does not publish an aggregate pass rate for the Certified Hemodialysis Technologist/Technician exam. Any specific percentage circulating online should be treated as unverified.
No. Passing requires a scaled score of at least 70 on a 1-100 scale, which is not the same as answering 70% of the 150 questions correctly. Scaled scoring accounts for item difficulty across different exam forms.
You can retest, but after every third unsuccessful attempt, BONENT requires eight nephrology continuing-education hours before you're eligible to sit for the exam again.
Patient Care, at 45% of the exam, has by far the largest impact on your scaled score. Infection Control, at 18%, is the second priority. Together they cover 63% of exam content.
No. The exam is closed-book and proctored in person, whether taken by computer-based testing or paper-and-pencil. Personal calculators and reference materials are not permitted.