- CHT stands for Certified Hemodialysis Technologist/Technician, credentialed by BONENT.
- The exam has 150 multiple-choice questions in three hours, passed with a scaled score of 70 or higher.
- Patient Care (45%) and Infection Control (18%) are the two heaviest of five exam domains.
- U.S. computer-based testing costs $255; certification stays active for four years.
What Does CHT Actually Mean?
CHT stands for Certified Hemodialysis Technologist/Technician, a credential awarded by the Board of Nephrology Examiners Nursing & Technology (BONENT). It signals that a dialysis technician has demonstrated the knowledge required to safely operate hemodialysis equipment, monitor patients during treatment, manage vascular access, and follow infection-control protocols in an End-Stage Renal Disease (ESRD) facility. If you're searching for a plain-language answer, our companion pieces on CHT Meaning, What Does CHT Stand For?, and What Does CHT Mean? cover the terminology from slightly different angles, but the short version is this: CHT is a nationally recognized certification that verifies competency in dialysis patient care, not a job title you earn just by working in a clinic.
This distinction matters because "CHT" is used by other credentialing bodies in entirely unrelated fields. On this site, and in every fact below, CHT refers exclusively to the BONENT Certified Hemodialysis Technologist/Technician credential.
Who Issues the CHT and How It's Administered
BONENT administers the CHT exam through two delivery formats: computer-based testing via the SMT/ISO-Quality Testing network, and traditional paper-and-pencil testing. Both are closed-book, in-person, proctored exams - personal calculators and outside reference materials are not permitted in the testing room. A Spanish-language version of the exam is also available for candidates who prefer to test in that language.
If you schedule computer-based testing, you must complete the exam within six months of your registration confirmation, so timing your application to your actual readiness matters. For a full walkthrough of registration windows and scheduling logistics, see CHT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
CHT Exam Format and Question Style
The CHT exam consists of 150 multiple-choice questions delivered in a three-hour testing window. Questions are scenario-driven rather than pure recall - expect items that describe a patient situation during treatment (a sudden drop in blood pressure, an alarm on the dialysis machine, a suspected access infection) and ask you to select the most appropriate technician response. This format rewards applied clinical judgment over memorized definitions.
Passing requires a scaled score of at least 70 on a 1-100 scale - this is not the same as answering 70% of raw questions correctly, since scaled scoring adjusts for question difficulty across different exam forms. For a detailed breakdown of how scaled scoring works and what it means for your target performance, read CHT Passing Score 2026: Exactly What You Need to Pass. If you're trying to gauge how challenging the exam actually is relative to your current experience level, How Hard Is the CHT Exam? Complete Difficulty Guide 2026 and CHT Pass Rate 2026: What the Data Shows go deeper into that question.
BONENT also offers an optional official practice examination containing 50 questions for $60, which mirrors the real exam's question style and is one of the few authoritative ways to calibrate your readiness before test day.
The Five CHT Exam Domains
The CHT exam is built around five content domains, each weighted differently. Understanding these weights should directly shape how you allocate study time.
Domain 1: Patient Care (45%)
By far the largest domain, covering pre-treatment assessment, intradialytic monitoring, vascular access care, complications management, and patient education during treatment.
- Vital sign interpretation and response protocols
- Vascular access types (fistula, graft, catheter) and complication recognition
- Intradialytic emergencies and appropriate technician actions
Domain 4: Infection Control (18%)
The second-largest domain, testing knowledge of standard precautions, disinfection procedures, and outbreak prevention specific to dialysis settings.
- Personal protective equipment use in the dialysis unit
- Machine and station disinfection between patients
- Bloodborne pathogen exposure protocols
Domain 3: Water Treatment (15%)
Covers the water purification systems that make dialysate safe, including reverse osmosis, deionization, and water quality monitoring.
- Water treatment system components and function
- Testing and documentation requirements
- Troubleshooting contamination risks
Domain 2: Machine Technology (12%)
Focuses on the dialysis machine itself - setup, alarms, troubleshooting, and safe operation.
- Machine alarm interpretation and response
- Dialyzer setup and priming procedures
- Routine equipment maintenance and safety checks
Domain 5: Education and Professional Development (10%)
The smallest domain, covering patient education responsibilities, professional ethics, and continued competency.
- Patient and caregiver education techniques
- Scope of practice and professional boundaries
- Documentation standards
Because Patient Care and Infection Control together make up nearly two-thirds of the exam, most successful candidates weight their study time accordingly rather than splitting effort evenly across all five areas. For a complete content breakdown of every domain with subtopics, see CHT Exam Domains 2026: Complete Guide to All 5 Content Areas.
Who Can Sit for the CHT?
BONENT's standard eligibility pathway requires three things: a high-school diploma or official transcript, six months of nephrology patient-care experience, and active participation in an ESRD facility. There are notable exceptions worth knowing before you assume you don't qualify yet:
- Graduates of BONENT-approved training programs may apply within two years of completing their program without the six-month patient-care experience requirement.
- Candidates with more than four years of dialysis experience can potentially waive the diploma documentation requirement.
- Two signed and dated professional references are required - one from your immediate supervisor and one from a nephrology professional. Applicants who are currently unemployed but qualify otherwise may use a previous supervisor's reference.
These pathways matter because they open the door to candidates who entered dialysis care through a formal training program rather than months of on-the-job experience. If you completed coursework through a program, check out CHT Training for how formal training intersects with eligibility. For the complete eligibility checklist including documentation specifics, see CHT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
If you graduated from a BONENT-approved program within the last two years, you can likely skip the six-month patient-care requirement entirely - confirm your program's approval status before assuming you need more clinical hours.
CHT Fees and Registration Mechanics
Exam fees differ by testing format and candidate location. In the United States, computer-based testing costs $255 and paper-and-pencil testing costs $235. International candidates pay $255 for computer-based testing and $260 for paper-and-pencil. Candidates who need faster processing can pay an optional $100 expedited application fee.
These are the registration costs, but they're not the full financial picture once you factor in maintenance and potential re-examination. A full cost breakdown, including four-year maintenance pricing, lives in CHT Certification Cost 2026: Complete Pricing Breakdown.
| Fee Type | U.S. Cost | International Cost |
|---|---|---|
| Computer-based exam | $255 | $255 |
| Paper-and-pencil exam | $235 | $260 |
| Expedited processing (optional) | $100 | $100 |
| Annual maintenance | $65/year | $65/year |
| Prepaid 4-year maintenance | $240 | $240 |
Who Hires CHTs?
Employers hiring dialysis technicians consistently look for CHT certification as a marker of verified competency, since it confirms a technician can be trusted with direct patient care, machine operation, and infection-control compliance without extensive additional oversight. Outpatient dialysis clinics, hospital-based dialysis units, and home dialysis training programs are the primary settings where certified technicians work. Because ESRD patients require treatment multiple times per week, facilities depend heavily on a stable, qualified technician workforce - which is part of why the credential carries weight in hiring decisions.
If you're evaluating whether pursuing certification makes sense for your career path, Is the CHT Certification Worth It? Complete ROI Analysis 2026 and CHT Salary Guide 2026: Complete Earnings Analysis lay out the practical considerations. For actual openings and what job postings typically require, browse CHT Jobs.
Keeping the CHT Active
CHT certification is valid for four years from the date it's awarded. During that time, annual maintenance is required - either $65 per year or a prepaid $240 covering the full four-year cycle. As long as maintenance stays current, there's no additional routine recertification fee.
When the four-year cycle ends, the 2026 continuing-education renewal route requires 40 contact hours total, with at least 30 of those classified as nephrology-focused Group A hours. Candidates who don't complete continuing education can instead choose re-examination, or - once in their certification lifetime - apply a continuing-education waiver. Separately, if a candidate fails the exam three times in a row, BONENT requires eight nephrology continuing-education hours before another attempt.
A CHT-Specific Approach to Preparation
Generic study techniques only help if they're pointed at the right content in the right order. Given that Patient Care (45%) and Infection Control (18%) together account for nearly two-thirds of the exam, a sensible progression is to build those two domains first, then layer in Water Treatment, Machine Technology, and Education/Professional Development as reinforcement rather than starting points.
Patient Care Foundations
- Vascular access complications and intradialytic monitoring
- Practice scenario-based questions mimicking exam phrasing
Infection Control Deep Dive
- Standard precautions and disinfection protocols
- Review exposure and outbreak-response procedures
Water Treatment & Machine Technology
- Reverse osmosis and water quality testing
- Machine alarm troubleshooting drills
Education Domain & Full Review
- Patient education and professional scope topics
- Take the official 50-question practice exam
For a structured, day-by-day study plan built around these same domain weights, see CHT Study Guide 2026: How to Pass on Your First Attempt. And when you're ready to test your recall of high-yield facts quickly, the CHT Cheat Sheet 2026: One-Page Review of Must-Know Facts condenses the essentials into a single reference page. You can also work through realistic scenario questions on our CHT practice test platform to get comfortable with the exam's applied question style before test day.
Frequently Asked Questions
CHT stands for Certified Hemodialysis Technologist/Technician, a credential issued by BONENT that verifies competency in dialysis patient care, machine operation, and infection control.
Yes. The CHT exam consists of 150 multiple-choice questions administered in a three-hour session, either by computer or paper-and-pencil format.
CHT certification is valid for four years, with annual maintenance payments of $65 (or $240 prepaid) required to keep it active throughout the cycle.
No degree is required. Standard eligibility requires a high-school diploma or official transcript, six months of nephrology patient-care experience, and active participation in an ESRD facility, though BONENT-approved program graduates and highly experienced technicians have alternative pathways.
Patient Care is the largest domain at 45% of the exam, followed by Infection Control at 18%, making these two areas the highest priority for study time.
Understanding exactly what the CHT is - and what it isn't - is the first step toward a focused, efficient path to certification. From here, exploring the specific domains, eligibility documentation, and a realistic study timeline will help you move from "what is CHT" to "I'm ready to sit for it."