- CHT stands for Certified Hemodialysis Technologist/Technician, issued by BONENT, not a therapy-related credential.
- The exam has 150 multiple-choice questions in three hours, scored on a 1-100 scale where 70 is passing.
- Patient Care (45%) and Infection Control (18%) together make up nearly two-thirds of the exam content.
- Standard eligibility needs a high-school diploma, six months of nephrology patient-care experience, and two professional references.
What Does CHT Actually Stand For?
CHT stands for Certified Hemodialysis Technologist/Technician, a credential awarded by the Board of Nephrology Examiners Nursing & Technology (BONENT). It is important to be precise here because the letters "CHT" are reused across unrelated fields, and mixing up facts between them can send you studying the wrong material entirely. On this site, and in this article specifically, CHT means one thing only: the dialysis-focused certification that verifies a technician's competency in caring for patients receiving hemodialysis.
If you landed here after searching "What Is CHT?" or "CHT Meaning," you're in the right place. This article walks through exactly what the credential covers, who administers it, how the exam is structured, and what it takes to earn and keep it.
Who Issues the CHT Credential?
The Board of Nephrology Examiners Nursing & Technology (BONENT) is the certifying body responsible for the CHT exam, eligibility rules, fees, and renewal policies. BONENT administers computer-based testing through the SMT/ISO-Quality Testing network, and also offers a paper-and-pencil testing option for candidates who prefer or require it. A Spanish-language version of the examination is available as well, which reflects the diversity of the dialysis care workforce.
Because BONENT owns the standards for this specific credential, every fact in this article - fees, domain weights, scoring, renewal cycles - comes directly from BONENT's published materials rather than from any other organization that happens to use the same three-letter abbreviation.
What a CHT Does on the Job
A Certified Hemodialysis Technologist/Technician typically works in outpatient dialysis clinics, hospital-based dialysis units, and home dialysis training programs. Employers hiring for these roles include dialysis chains, hospital nephrology departments, and outpatient ESRD (end-stage renal disease) facilities. Day-to-day responsibilities generally include:
- Setting up and monitoring hemodialysis machines during treatment
- Cannulating vascular access sites and monitoring for complications
- Tracking patient vital signs and responding to intradialytic events
- Performing water treatment system checks and quality testing
- Following infection-control protocols to protect immunocompromised patients
If you're weighing whether this career path and its earning potential make sense for you, the CHT Salary Guide 2026: Complete Earnings Analysis and Is the CHT Certification Worth It? Complete ROI Analysis 2026 dig into that question in more depth. For a broader look at where certified technicians find work, see CHT Jobs.
Exam Format and Question Style
The CHT exam consists of 150 multiple-choice questions administered within a three-hour testing window. It is closed-book and proctored in person - personal calculators and outside reference materials are not permitted during testing. Candidates testing by computer must complete their exam within six months of receiving confirmation of their scheduled testing window.
Passing requires a scaled score of at least 70 on a 1-100 scale. This is a critical distinction: a scaled score of 70 does not mean answering 70% of raw questions correctly. The scaling process accounts for question difficulty across different exam forms, so candidates should not try to reverse-engineer their score from a simple percentage. For a full breakdown of how scoring actually works, see CHT Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Don't count raw correct answers during your exam to estimate your score - the 1-100 scaled scoring system means a passing score of 70 is not the same as 70% accuracy.
The Five CHT Exam Domains
The CHT exam is built around five content domains, each weighted differently. Understanding these weights is essential for allocating your study time wisely - spending equal hours on every topic is inefficient when nearly half the exam sits in one domain.
Domain 1: Patient Care (45%)
By far the largest domain, covering pre-, intra-, and post-dialysis patient assessment, vascular access care, complication management, and medication awareness.
- Vital sign monitoring and intradialytic complications
- Vascular access types and cannulation technique
- Fluid removal and dry weight assessment
Domain 2: Machine Technology (12%)
Covers the mechanics and troubleshooting of hemodialysis machines, including alarms, dialyzer setup, and equipment maintenance basics.
- Dialysis delivery system components
- Common machine alarms and appropriate responses
Domain 3: Water Treatment (15%)
Tests knowledge of water purification systems used to prepare dialysate, including reverse osmosis, deionization, and water quality testing standards.
- Water treatment system components and sequence
- Water quality monitoring and testing requirements
Domain 4: Infection Control (18%)
The second-largest domain, focused on preventing infection transmission in dialysis settings where patients are especially vulnerable.
- Disinfection and sterilization protocols
- Standard precautions and bloodborne pathogen exposure prevention
Domain 5: Education and Professional Development (10%)
Covers patient education responsibilities, ethical practice, and ongoing professional growth expectations for dialysis technicians.
- Patient teaching on diet, fluid restriction, and self-care
- Scope of practice and professional conduct
Together, Patient Care and Infection Control account for 63% of the exam - a combined weight higher than the other three domains added together. For a deeper walkthrough of each content area with subtopics and sample focus areas, see CHT Exam Domains 2026: Complete Guide to All 5 Content Areas.
| Domain | Weight | Relative Priority |
|---|---|---|
| Patient Care | 45% | Highest |
| Infection Control | 18% | High |
| Water Treatment | 15% | Moderate |
| Machine Technology | 12% | Moderate |
| Education & Professional Development | 10% | Lower |
Eligibility Paths to Sit for the Exam
BONENT offers more than one route to exam eligibility, which matters because candidates come from different backgrounds - some through formal training programs, others through on-the-job experience.
- Standard path: 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 path: 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 must also submit two signed and dated professional references - one from an immediate supervisor and one from a nephrology professional. Applicants who are currently unemployed but otherwise qualify may use a previous supervisor as a reference. For the complete rundown of every pathway and required documentation, see CHT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Fees and Registration Mechanics
Exam fees differ slightly by testing format and candidate location:
- U.S. candidates: $255 for computer-based testing or $235 for paper-and-pencil testing
- International candidates: $255 for computer-based testing or $260 for paper-and-pencil testing
- Optional expedited processing: An additional $100 for faster application review
Beyond the exam itself, BONENT also offers an optional official practice examination containing 50 questions for $60, which can help candidates gauge readiness before committing to the full exam fee. A full breakdown of every cost involved - application, testing, maintenance, and optional add-ons - is available in CHT Certification Cost 2026: Complete Pricing Breakdown. If you're trying to plan around specific testing windows and application deadlines, check CHT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Maintaining the Credential
CHT certification is valid for four years. During that period, annual maintenance is required at $65 per year, or candidates can prepay $240 to cover all four years upfront. As long as maintenance fees stay current, there is no additional routine recertification fee.
Under the 2026 renewal structure, the continuing-education route to recertification requires 40 contact hours total, with at least 30 of those hours classified as nephrology-focused Group A hours. Candidates who don't complete continuing education can instead pursue re-examination, or use a once-in-a-lifetime continuing-education waiver if eligible. Separately, candidates who fail the exam three times in a row are required to complete eight nephrology continuing-education hours before attempting again.
A CHT-Specific Way to Prepare
Generic study techniques like spaced repetition or timed practice blocks work best when they're mapped directly onto the CHT domain weights rather than applied evenly across all content. Since Patient Care and Infection Control together make up 63% of the exam, your study calendar should reflect that imbalance rather than splitting time equally across all five domains.
Patient Care Deep Dive
- Vascular access assessment and cannulation scenarios
- Intradialytic complications and appropriate responses
Infection Control
- Disinfection protocols and standard precautions
- Bloodborne pathogen exposure procedures
Water Treatment & Machine Technology
- Reverse osmosis and water quality testing sequence
- Common machine alarms and troubleshooting logic
Education & Professional Development, Then Full Review
- Patient teaching responsibilities and scope of practice
- Take the 50-question official practice exam
For a structured, week-by-week plan built specifically around these domain weights, see the CHT Study Guide 2026: How to Pass on Your First Attempt. And if you're still deciding how much runway you need before test day, How Hard Is the CHT Exam? Complete Difficulty Guide 2026 and CHT Pass Rate 2026: What the Data Shows offer useful context for setting expectations. Running through realistic practice questions on our CHT practice test platform is also one of the most direct ways to get comfortable with the exam's question style before your scheduled date.
Key Takeaway
Weight your study hours to match the exam's own weighting - Patient Care and Infection Control deserve the majority of your review time, not an equal fifth each.
Frequently Asked Questions
A CHT, or Certified Hemodialysis Technologist/Technician, is a credentialed dialysis professional who has passed BONENT's certification exam covering patient care, machine technology, water treatment, infection control, and professional development.
The exam contains 150 multiple-choice questions, and candidates are given three hours to complete it, whether taken by computer or on paper.
You need a scaled score of at least 70 on a 1-100 scale. This is not the same as answering 70% of questions correctly, since the scoring process adjusts for exam form difficulty.
Certification lasts four years. Candidates pay annual maintenance of $65, or can prepay $240 to cover the full four-year period at once.
Yes. The standard eligibility path requires a high-school diploma, six months of nephrology patient-care experience, and active participation in an ESRD facility, without requiring a formal program certificate.