- CHT stands for Certified Hemodialysis Technologist/Technician, credentialed by BONENT.
- The exam has 150 multiple-choice questions in three hours, scored on a 1-100 scale.
- A passing score is 70 on that scaled system - not 70% raw accuracy.
- Patient Care (45%) and Infection Control (18%) dominate the exam blueprint.
What CHT Stands For, Letter by Letter
CHT stands for Certified Hemodialysis Technologist/Technician. It is the credential awarded to dialysis patient-care technicians who pass a standardized examination administered by the Board of Nephrology Examiners Nursing and Technology (BONENT). Each word in the name reflects something specific about the role:
- Certified - the individual has passed a formal, proctored examination and meets documented eligibility requirements, not just on-the-job training alone.
- Hemodialysis - the scope is specific to hemodialysis (blood filtration through an external machine and dialyzer), distinguishing it from peritoneal dialysis or general nursing credentials.
- Technologist/Technician - the person operates dialysis equipment, monitors patients during treatment, and manages water treatment and machine systems used in the dialysis process.
If you're arriving at this page after searching a related phrase, you may also want the shorter companion explainers What Is CHT?, CHT Meaning, or What Does CHT Mean? - they cover the same acronym from slightly different angles.
Who Issues the CHT Credential
The Certified Hemodialysis Technologist/Technician credential is issued by the Board of Nephrology Examiners Nursing and Technology (BONENT). BONENT sets the eligibility rules, writes the exam content outline, administers testing through the SMT/ISO-Quality Testing network for computer-based candidates (with a paper-and-pencil option also available), and manages ongoing recertification.
For a deeper walkthrough of how the organization structures the entire credentialing process - from application through renewal - see CHT Certification and What Is CHT Certification?.
Why "CHT" Gets Confused With Other Credentials
Because "CHT" is only three letters, it's reused across unrelated fields - hand therapy, hypnotherapy, and other clinical specialties each have their own "CHT" designation with completely different exams, fees, and governing boards. None of those facts apply here. If you're researching dialysis careers, make sure any source you're reading is describing BONENT's Certified Hemodialysis Technologist/Technician, not a same-named credential from a different profession. Mixing up exam fees, scoring models, or renewal cycles between unrelated "CHT" programs is a common and costly research mistake.
Key Takeaway
When you see "CHT" in a dialysis job posting, confirm it references BONENT's Certified Hemodialysis Technologist/Technician - the credential covered throughout this site and detailed further in What Is A CHT?
What the CHT Exam Actually Tests
Once you know what the letters mean, the more useful question is what the certification actually verifies. The CHT exam is a 150-question, multiple-choice, closed-book test administered in three hours. Candidates cannot bring personal calculators or outside reference materials into the testing room, and testing is proctored in person. A Spanish-language version of the exam is also offered.
The exam draws from five content domains, weighted differently based on how much of the job they represent:
Domain 1: Patient Care (45%)
By far the largest domain. Covers pre-treatment assessment, vascular access care, intradialytic monitoring, complications management, and post-treatment procedures.
- Vascular access types (fistula, graft, catheter) and their care
- Vital sign monitoring and recognizing intradialytic complications
Domain 4: Infection Control (18%)
The second-largest domain, reflecting how central infection prevention is to safe dialysis delivery.
- Standard precautions and isolation procedures specific to ESRD units
- Reprocessing and disinfection protocols
Domain 3: Water Treatment (15%)
Tests understanding of the water purification systems that make dialysate safe.
- Reverse osmosis, deionization, and water quality standards
Domain 2: Machine Technology (12%)
Covers dialysis machine components, alarms, and troubleshooting.
- Dialyzer function and machine safety monitors
Domain 5: Education and Professional Development (10%)
The smallest domain, focused on patient education and professional scope of practice.
- Patient teaching principles and professional responsibilities
For a full breakdown of every topic within each domain, see CHT Exam Domains 2026: Complete Guide to All 5 Content Areas. And if you're wondering how tough this blend of content actually is in practice, How Hard Is the CHT Exam? Complete Difficulty Guide 2026 breaks it down candidate by candidate.
Who Can Sit for the CHT Exam
Standard eligibility for the CHT exam requires:
- A high-school diploma or official transcript (more than four years of dialysis experience can support a waiver of this documentation)
- At least six months of nephrology patient-care experience
- Active participation in an ESRD facility
- Two signed and dated professional references, including the immediate supervisor and a nephrology professional (qualifying unemployed applicants may substitute a previous supervisor)
Graduates of BONENT-approved training programs get a shortcut: they may apply within two years of completing the program without needing to document the six-month patient-care experience requirement. This is one reason formal CHT Training programs are a popular entry path for people new to dialysis care.
A complete rundown of every eligibility path, including the transcript waiver and reference requirements, is available in CHT Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Cost of Earning the CHT Credential
Exam fees differ based on testing format and location:
| Fee Type | U.S. Candidates | International Candidates |
|---|---|---|
| Computer-based testing | $255 | $255 |
| Paper-and-pencil testing | $235 | $260 |
| Optional expedited processing | $100 | |
Once certified, the credential is valid for four years. Maintaining it costs $65 annually, or candidates can prepay $240 to cover the full four-year cycle. Under the 2026 renewal route, technicians renew through 40 contact hours of continuing education, with at least 30 of those hours in nephrology-focused Group A content - or alternatively through re-examination or a once-in-a-lifetime continuing-education waiver. There is no additional routine recertification fee beyond annual maintenance when that maintenance is kept current.
If you fail the exam three times consecutively, BONENT requires eight nephrology continuing-education hours before another attempt. For the complete cost picture - application, testing, optional practice exam, and four years of renewal - see CHT Certification Cost 2026: Complete Pricing Breakdown.
Key Takeaway
Budget beyond the exam fee itself: annual maintenance, and potentially the $60 official 50-question practice exam, are recurring or optional costs worth planning for in advance.
What a CHT Does on the Job
Understanding what the letters "CHT" stand for only matters if you also understand what the job looks like day to day. Certified Hemodialysis Technologists/Technicians typically work in:
- Outpatient dialysis clinics and ESRD (end-stage renal disease) treatment centers
- Hospital-based acute dialysis units
- Home dialysis training and support programs
Their responsibilities center on setting up and monitoring dialysis machines, assessing patients before, during, and after treatment, managing vascular access sites, and following strict infection-control protocols - which lines up directly with the exam's heaviest domains, Patient Care and Infection Control. Employers hiring for these roles generally list the CHT credential as a required or strongly preferred qualification, since it signals standardized competency across all five domains. For a look at where the role can lead and what employers typically expect, see CHT Jobs and the earnings analysis in CHT Salary Guide 2026: Complete Earnings Analysis.
If you're still weighing whether pursuing this credential fits your career goals, Is the CHT Certification Worth It? Complete ROI Analysis 2026 lays out the tradeoffs without relying on invented numbers.
Turning the Name Into a Study Plan
Knowing that CHT means Certified Hemodialysis Technologist/Technician should shape how you prepare - the name itself tells you the exam is clinically focused, not just mechanical. That means your study time should mirror the domain weighting rather than being split evenly across all five areas.
Patient Care foundations
- Vascular access assessment and complications
- Intradialytic monitoring and emergency response
Infection Control deep dive
- Standard precautions, reprocessing, and outbreak prevention specific to dialysis units
Water Treatment and Machine Technology
- Reverse osmosis systems, alarms, and troubleshooting logic
Education domain plus full review
- Patient teaching concepts
- Timed practice questions under closed-book conditions
For a structured, week-by-week plan built entirely around these five domains and BONENT's actual exam format, see CHT Study Guide 2026: How to Pass on Your First Attempt. Pairing that with a condensed reference like the CHT Cheat Sheet 2026: One-Page Review of Must-Know Facts can help during final review in the days before test day. You can also build timed practice at our CHT practice test platform, which mirrors the exam's multiple-choice format so you get comfortable with pacing across all 150 questions in three hours.
Before you register, confirm testing windows and deadlines through CHT Exam Dates 2026: Testing Windows, Deadlines & Scheduling - computer-based testing must be completed within six months of confirmation, so timing your application to your study plan matters. And if you want a sense of how other candidates have performed on this exact exam, CHT Pass Rate 2026: What the Data Shows reviews the available data without guessing at numbers that aren't published.
Frequently Asked Questions
In the dialysis field, CHT stands for Certified Hemodialysis Technologist/Technician, a credential issued by the Board of Nephrology Examiners Nursing and Technology (BONENT) to qualified dialysis patient-care technicians.
A dialysis technician becomes a CHT once they pass BONENT's certification exam and meet its eligibility requirements. CHT is the certified designation; "dialysis technician" is the broader job title, which may or may not require certification depending on the employer and state.
No. Other fields use the same three-letter acronym for entirely different credentials. In the context of this site and dialysis careers, CHT refers exclusively to the Certified Hemodialysis Technologist/Technician credential from BONENT.
The CHT exam contains 150 multiple-choice questions administered in a three-hour testing session, delivered as closed-book, in-person proctored testing.
CHT certification is valid for four years. Technicians maintain it through annual maintenance fees of $65, or a $240 prepaid option covering all four years, alongside continuing-education requirements at renewal.