- What CHT Certification Actually Is
- Who Issues the CHT and How the Exam Works
- The Five CHT Exam Domains
- Eligibility: Who Can Sit for the CHT
- Registration, Fees, and Timelines
- Why Employers Care About the CHT
- Building a CHT-Specific Study Plan
- Life After You Pass: Maintenance and Renewal
- Frequently Asked Questions
- CHT stands for Certified Hemodialysis Technologist/Technician, issued only by BONENT.
- The exam has 150 multiple-choice questions in three hours, scored on a 1-100 scale.
- Passing requires a scaled score of at least 70, not 70% raw accuracy.
- Patient Care (45%) and Infection Control (18%) together make up nearly two-thirds of the exam.
What CHT Certification Actually Is
CHT certification stands for Certified Hemodialysis Technologist/Technician, a credential awarded by the Board of Nephrology Examiners Nursing & Technology (BONENT) to dialysis technicians who demonstrate competency in patient care, equipment operation, water treatment, and infection control within end-stage renal disease (ESRD) settings. If you've landed here searching "what is CHT," it's worth being precise: several unrelated fields use the same three letters for different things, but on this site and throughout the dialysis industry, CHT refers exclusively to this BONENT-administered credential for hemodialysis technicians.
For a deeper dive into terminology, our companion pieces on What Is CHT?, CHT Meaning, and What Does CHT Stand For? cover the naming conventions in more detail. This article focuses on what the certification involves structurally - the exam, the eligibility rules, the fees, and what it takes to earn and keep it.
Who Issues the CHT and How the Exam Works
BONENT is the certifying body for the CHT. Candidates can test via computer-based testing through the SMT/ISO-Quality Testing network, or opt for paper-and-pencil administration if that format better suits their situation. A Spanish-language version of the exam is also available, which matters for technicians in bilingual clinical environments.
The exam itself is a fixed structure: 150 multiple-choice questions administered over three hours. It is closed-book - no personal calculators, notes, or reference materials are permitted during testing, and the exam is proctored in person. This format rewards candidates who have internalized formulas and clinical reasoning rather than those planning to look things up mid-test.
Passing is based on a scaled score of at least 70 on a 1-100 scale - this is not the same as answering 70% of questions correctly. Scaled scoring adjusts for question difficulty, so candidates shouldn't try to reverse-engineer a "safe" raw percentage. For a full breakdown of how scaled scoring works and what it means for your prep, see CHT Passing Score 2026: Exactly What You Need to Pass.
If you're weighing how demanding this exam actually is compared to other credentialing exams you may have taken, How Hard Is the CHT Exam? Complete Difficulty Guide 2026 walks through the format and content load in more depth, and CHT Pass Rate 2026: What the Data Shows looks at outcome data.
The Five CHT Exam Domains
The CHT exam is built around five content domains, each weighted differently. Understanding these weights is the single most important step in allocating your study time correctly.
Domain 1: Patient Care (45%)
By far the largest domain, covering pre-, intra-, and post-dialysis patient assessment, vital signs, vascular access care, complications management, and patient safety protocols.
- Recognizing and responding to intradialytic complications
- Vascular access types and troubleshooting
- Medication administration boundaries for technicians
Domain 2: Machine Technology (12%)
Covers the operation, setup, and troubleshooting of hemodialysis machines and delivery systems.
- Machine alarms and their clinical meaning
- Dialyzer setup and priming procedures
Domain 3: Water Treatment (15%)
Focuses on water purification systems that feed dialysis machines, a technical area unique to this field.
- Reverse osmosis and deionization principles
- Water quality testing and standards
Domain 4: Infection Control (18%)
The second-largest domain, covering standard precautions, disinfection, and outbreak prevention specific to dialysis units.
- Dialyzer reprocessing and disinfection protocols
- Bloodborne pathogen precautions in the dialysis setting
Domain 5: Education and Professional Development (10%)
Covers patient education responsibilities, professional ethics, and scope-of-practice boundaries for technicians.
- Patient education on diet, fluid restriction, and self-care
- Professional and legal scope-of-practice issues
Because Patient Care and Infection Control together account for 63% of the exam, most of your study time should go there. For a section-by-section breakdown of exactly what to know within each domain, CHT Exam Domains 2026: Complete Guide to All 5 Content Areas is the most thorough resource on this site.
Eligibility: Who Can Sit for the CHT
BONENT sets a few different paths to eligibility depending on your background:
- Standard route: A high-school diploma (or official transcript), at least six months of nephrology patient-care experience, and active participation in an ESRD facility.
- Program graduate route: Graduates of BONENT-approved training programs may apply within two years of completing the program, without needing the six-month patient-care experience requirement.
- Experience-based waiver: Candidates with more than four years of dialysis experience can use that experience to support a waiver of diploma documentation.
All applicants need two signed and dated professional references - one from the immediate supervisor and one from a nephrology professional. Applicants who are currently unemployed but otherwise qualified may use a previous supervisor's reference instead.
These rules have enough branching logic that it's worth reading the full breakdown before you start your application - see CHT Requirements 2026: Eligibility, Prerequisites & How to Qualify for a complete walkthrough of each pathway and documentation checklist.
Key Takeaway
If you graduated from a BONENT-approved program, apply within two years to skip the six-month experience requirement entirely - this window is easy to miss if you delay after graduation.
Registration, Fees, and Timelines
Fee structures differ by testing format and location. In the U.S., the exam costs $255 for computer-based testing or $235 for paper-and-pencil. International candidates pay $255 for computer-based testing or $260 for paper-and-pencil. An optional expedited application processing fee of $100 is available for candidates who need their application reviewed faster.
Once your computer-based testing eligibility is confirmed, you must complete the exam within six months - this isn't an open-ended window, so plan your study timeline around that deadline rather than around an arbitrary personal target date.
| Fee Type | Amount |
|---|---|
| U.S. Computer-Based Testing | $255 |
| U.S. Paper-and-Pencil | $235 |
| International Computer-Based Testing | $255 |
| International Paper-and-Pencil | $260 |
| Expedited Processing (optional) | $100 |
| Annual Maintenance | $65/year or $240 for four years prepaid |
For a full accounting of every cost you might encounter - exam fees, optional practice materials, and renewal costs - see CHT Certification Cost 2026: Complete Pricing Breakdown. If you're also trying to plan around registration windows and testing dates, CHT Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers scheduling logistics.
Why Employers Care About the CHT
Dialysis clinics - whether independent, hospital-affiliated, or part of large national chains - routinely require or strongly prefer CHT certification for patient care technicians working in ESRD settings. Because the exam validates competency across patient care, machine operation, water treatment, and infection control, employers treat it as a baseline signal that a technician can safely manage the technical and clinical demands of the dialysis chair without constant supervision.
Technicians pursuing career advancement - lead tech roles, training positions, or transitions into related nephrology support roles - often find that certification opens doors that experience alone doesn't. If you're weighing whether the investment of time and the $255/$235 exam fee is worth it against your career goals, Is the CHT Certification Worth It? Complete ROI Analysis 2026 and CHT Salary Guide 2026: Complete Earnings Analysis break down the practical considerations. For where certified technicians actually find work, CHT Jobs covers common employment settings.
Building a CHT-Specific Study Plan
Generic study advice - spaced repetition, timed practice blocks, flashcard review - only helps if it's mapped to the CHT's actual domain weights. Since Patient Care (45%) and Infection Control (18%) make up 63% of the exam, a plan that spends equal time on all five domains is misallocating effort.
Patient Care Foundations
- Vascular access complications and troubleshooting
- Intradialytic complication recognition and response
Infection Control
- Reprocessing protocols and disinfection standards
- Standard precautions specific to dialysis units
Water Treatment & Machine Technology
- Reverse osmosis and water quality testing
- Machine alarms and delivery system setup
Education/Professional Development + Full Review
- Patient education scope and ethics
- Timed 150-question practice run under exam conditions
BONENT offers an official practice examination of 50 questions for $60, which is worth taking closer to the end of your prep to gauge readiness under realistic multiple-choice conditions. For a structured week-by-week plan built entirely around these domain weights, see CHT Study Guide 2026: How to Pass on Your First Attempt, and for a condensed reference you can review the week before your test, check the CHT Cheat Sheet 2026: One-Page Review of Must-Know Facts.
You can also build familiarity with the exam's multiple-choice style and timing pressure using full-length practice exams on our practice test platform, which mirrors the closed-book, timed format you'll face on test day.
Life After You Pass: Maintenance and Renewal
Passing the CHT exam isn't the end of the process - certification is valid for four years, but it requires annual maintenance of $65 per year, or $240 if you prepay for all four years upfront. As long as maintenance stays current, there's no additional routine recertification fee.
Starting with the 2026 renewal cycle, the continuing-education route to recertification requires 40 contact hours, with at least 30 of those classified as nephrology-focused Group A hours. Technicians who don't complete the CE route can instead choose re-examination, or use the once-in-a-lifetime continuing-education waiver if eligible.
There's also a lesser-known rule worth flagging: after every third unsuccessful exam attempt, candidates are required to complete eight nephrology continuing-education hours before attempting again. This is a good reason to prepare thoroughly the first time rather than treating the exam as low-stakes to retake repeatedly.
Key Takeaway
Budget for ongoing $65/year maintenance from day one - certification isn't a one-time purchase, and lapses can complicate your renewal pathway.
If you're still deciding whether to pursue this credential at all, or you've just started researching what the letters even mean, our related explainers - What Is A CHT?, What Does CHT Mean?, and CHT Certification - give additional context, while CHT Training covers how to build the clinical background needed before you apply. When you're ready to test your knowledge, practice exams built around the real domain weights are the most efficient way to find your weak spots before exam day.
Frequently Asked Questions
The Board of Nephrology Examiners Nursing & Technology (BONENT) administers the CHT exam, using the SMT/ISO-Quality Testing network for computer-based testing, with a paper-and-pencil option also available.
The exam contains 150 multiple-choice questions, and candidates have three hours to complete it in a closed-book, proctored setting.
You need a scaled score of at least 70 on a 1-100 scale. This is a scaled score, not a raw percentage of correct answers.
Standard eligibility requires a high-school diploma or official transcript, six months of nephrology patient-care experience, and active ESRD facility participation. Graduates of BONENT-approved programs and candidates with more than four years of dialysis experience have alternative pathways.
Certification lasts four years. Annual maintenance of $65 (or $240 prepaid for four years) is required throughout, and the 2026 renewal cycle requires 40 continuing-education contact hours, including at least 30 nephrology-focused Group A hours, or alternatively re-examination.