CHT Study Guide 2026: How to Pass on Your First Attempt

What the CHT Credential Actually Tests

The Certified Hemodialysis Technologist/Technician (CHT) credential, awarded by the Board of Nephrology Examiners Nursing & Technology (BONENT), verifies that a dialysis technician has the clinical judgment and technical knowledge to safely support patients through hemodialysis treatment. It is not a general healthcare certification - it is built specifically around the day-to-day realities of the dialysis unit: cannulation, machine setup, water treatment monitoring, infection control, and patient monitoring during treatment.

If you are new to the credential itself, start with our overview of what CHT certification actually involves and how it differs from state-specific dialysis technician licenses. This guide assumes you already know you want to sit for the exam and focuses on how to prepare for it strategically, using the exact structure BONENT uses to build the test.

Registration, Fees, and Eligibility Mechanics

Before you can think about domain content, you need to clear BONENT's eligibility gate. Standard eligibility requires a high-school diploma or official transcript, six months of nephrology patient-care experience, and active participation in an ESRD facility. There are two notable exceptions worth knowing:

• Graduates of BONENT-approved training programs can apply within two years of completing their program without needing the six-month patient-care experience requirement.
• Candidates with more than four years of dialysis experience can use that experience to support a waiver of diploma documentation.

You'll also need two signed and dated professional references - one from your immediate supervisor and one from a nephrology professional. Unemployed applicants who still qualify can use a previous supervisor's signature. For a full breakdown of every eligibility path, see our dedicated CHT requirements guide.

Fee Structure You Should Budget For

U.S. candidates pay $255 for computer-based testing or $235 for paper-and-pencil testing. International candidates pay $255 for computer-based or $260 for paper-and-pencil testing. If you need your application processed faster, expedited processing is available for an additional $100. Computer-based testing runs through the SMT/ISO-Quality Testing network, and once your application is confirmed, you must sit for the computer-based exam within six months. A full cost breakdown, including recertification fees, is available in our CHT certification cost guide.

The Five CHT Domains, Weighted Correctly

The single biggest strategic error candidates make is studying all content areas equally. BONENT's blueprint is explicitly weighted, and your study hours should mirror those weights almost exactly. Here's the breakdown:

For a deep dive into each domain's specific content and sample question styles, read our complete CHT exam domains guide. Below is a quick reference for what each domain demands.

Not sure how tough this actually is compared to other allied health exams? Our article on how hard the CHT exam really is breaks down the difficulty factors beyond just domain count.

Exam Day: Format, Scoring, and Rules

The CHT exam consists of 150 multiple-choice questions administered in a three-hour window. It is closed-book and proctored in person - no personal calculators or outside reference materials are allowed at your seat, computer-based or paper-based. A Spanish-language version of the exam is also available for candidates who prefer it.

The part that trips up even well-prepared candidates is the scoring model. Passing requires a scaled score of at least 70 on a 1-100 scale - this is not the same as getting 70% of the 150 questions correct. Scaled scoring adjusts for question difficulty across versions of the exam, so don't try to reverse-engineer your raw score from memory after testing. Our CHT passing score guide explains exactly how this scale works and why it matters for how you interpret your prep-test results.

If you want to see actual pass-rate context before you commit to a test date, review our CHT pass rate analysis, and check current CHT exam dates and scheduling windows so you can plan your study timeline backward from a real test date.

A Domain-Weighted Study Timeline

A generic eight-week study calendar is useless if it treats Machine Technology and Patient Care as equally important - they are not. Below is a timeline built around BONENT's actual weighting, assuming roughly eight weeks of preparation before your scheduled test date.

Notice that Patient Care gets attention in both week 1-2 and again in week 7 - at 45% of the exam, it deserves more total study hours than any other single domain, and a second pass helps cement retention closer to test day. For a condensed, printable version of the must-know facts across all five domains, bookmark our CHT cheat sheet for last-week review.

Using the Official Practice Exam Wisely

BONENT offers an official practice examination containing 50 questions for $60. Because it's produced by the certifying body itself, it's the closest thing available to the real exam's question style and phrasing - closer than any third-party guess at what BONENT asks.

Treat this practice exam as a diagnostic, not a confidence exercise. Take it once early in your prep (after week 2 or 3) to identify which domains need the most attention, and consider a second attempt closer to your test date to measure improvement. Since it's only 50 questions compared to the real exam's 150, don't treat a strong score on it as a guarantee - use it to calibrate your Patient Care and Infection Control review specifically, since those two domains alone make up 63% of the real exam.

Beyond the official practice exam, structured practice questions on our full practice test platform can help you drill domain-specific scenarios repeatedly until the reasoning behind each answer becomes automatic, not memorized.

Mistakes That Cause First-Attempt Failures

Most candidates who don't pass on the first try aren't failing because they didn't study - they're failing because they studied the wrong things in the wrong proportions, or misunderstood the exam's mechanics. Watch for these specific pitfalls:

• Treating all domains equally. Spending the same number of hours on Education and Professional Development (10%) as on Patient Care (45%) is a proportionally wasteful use of study time.
• Misreading the passing score. Confusing the scaled score of 70 with "70% of questions right" leads to either false confidence or unnecessary panic.
• Arriving without required documentation. Eligibility issues - missing references, unclear experience documentation - can delay a candidate before they ever sit for the exam.
• Bringing prohibited materials. Personal calculators and outside reference materials are not allowed at your seat; know the closed-book rules before test day.
• Letting the computer-based window lapse. Computer-based testing must be completed within six months of confirmation - waiting too long to schedule can force you to restart the process.

If you're weighing whether the investment of time and fees is worth it before you even begin, our CHT ROI analysis and CHT salary guide look at the credential's career value from a broader angle. And if you're still exploring the basics of the credential itself, see what is CHT and CHT meaning for foundational context.

After You Pass: Maintenance and Renewal

Passing the exam isn't the end of the compliance work - CHT certification lasts four years, and annual maintenance costs $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.

For the 2026 renewal cycle, the continuing-education route requires 40 contact hours total, with at least 30 of those hours being nephrology-focused Group A hours. If continuing education isn't feasible, alternatives include re-examination or a once-in-a-lifetime continuing-education waiver. One more detail worth knowing: after every third unsuccessful examination attempt, BONENT requires eight nephrology continuing-education hours before you can test again - another reason to prepare thoroughly for your first attempt rather than treating the exam as low-stakes practice.

Once certified, many technicians use the CHT credential to pursue roles in outpatient dialysis clinics, hospital acute dialysis units, and home dialysis training programs. Browse current opportunities and typical employer expectations in our CHT jobs overview, and if you're still building your foundational skills, our CHT training guide covers program options that can also shorten your eligibility path.

Frequently Asked Questions