- The CCHT-A Passing Standard, Explained
- Exam Format: 150 Questions, Three Hours, Pilot Items
- How the Four Domains Shape Your Score
- What the 2025 Pass Rate Tells You
- Registration, Fees, and Testing Permit Mechanics
- The FailSafe Provision If You Fall Short
- Mapping Study Weeks to the Passing Standard
- Frequently Asked Questions
- The CCHT-A passing standard is a scaled score of 95, not a raw percentage of 150 questions.
- Only 150 questions count toward your score; roughly 25 additional pilot items do not affect it.
- Clinical is 52% of the exam - your single biggest lever for reaching the passing standard.
- NNCC's 2025-2026 annual report shows a 61% pass rate across 44 administrations that year.
The CCHT-A Passing Standard, Explained
The Nephrology Nursing Certification Commission (NNCC) sets the CCHT-A passing standard at a scaled score of 95. This is not a raw percentage of correct answers out of 150 questions - it's a scaled score derived from the difficulty of the specific items you receive on your test form. NNCC administers CCHT-A through computer-based testing at PSI test centers, with applications and testing logistics handled by the Center for Nursing Education and Testing (C-NET).
Because the passing standard is scaled rather than a fixed percentage, two candidates who answer a different number of questions correctly could both pass, depending on which items were harder. This is standard practice for credentialing exams that use pilot items to calibrate future test forms - which is exactly what CCHT-A does.
Exam Format: 150 Questions, Three Hours, Pilot Items
CCHT-A consists of 150 multiple-choice questions delivered in a three-hour closed-book, computer-based format. According to the January 2026 application handbook, the exam also embeds approximately 25 unscored pilot questions that NNCC uses to evaluate future test content - these do not count toward your passing standard score, but you won't know which items are pilot questions while testing, so every question deserves your full attention.
The handbook explicitly states that no questions require calculator-based calculations, which tells you the exam is testing clinical judgment and applied knowledge rather than arithmetic. That's an important distinction from how some candidates assume dialysis-technician exams are structured.
- 150 scored questions + approximately 25 unscored pilot questions
- Three-hour time limit (roughly 72 seconds per question if you use the full window)
- Closed-book, computer-based, delivered at PSI test centers
- No calculator-based math required
For a full walkthrough of how the exam feels in practice - pacing, question style, and where candidates typically struggle - see How Hard Is the CCHT-A Exam? Complete Difficulty Guide 2026.
How the Four Domains Shape Your Score
Your scaled score of 95 is built from performance across four weighted content domains. Because Clinical carries more than half the exam's weight, it disproportionately determines whether you clear the passing standard.
Domain 1: Clinical (52%)
The largest domain by a wide margin. This covers direct patient care during dialysis treatment - assessment, complications, vascular access care, and treatment-related decision-making.
- Because this domain is more than half the exam, weak Clinical knowledge alone can prevent you from reaching 95
Domain 2: Technical (20%)
Equipment, machine function, water treatment systems, and technical troubleshooting knowledge specific to hemodialysis delivery.
- Second-largest domain - a meaningful share of your scored questions
Domain 3: Role Responsibilities (18%)
Professional scope of practice, documentation, communication, and the advanced technician's expanded responsibilities relative to entry-level roles.
- Tests judgment about what an advanced technician should and shouldn't do
Domain 4: Environment (10%)
Infection control, safety protocols, and the physical treatment setting.
- Smallest domain, but still worth dedicated review time given how few questions it takes to move your score
For the complete content outline behind each domain - including the linked test specifications that took effect in January 2019 - read CCHT-A Exam Domains 2026: Complete Guide to All 4 Content Areas.
Key Takeaway
Since Clinical is 52% of the exam, allocate more than half of your total review time there before splitting remaining time across Technical, Role Responsibilities, and Environment.
What the 2025 Pass Rate Tells You
NNCC's 2025-2026 annual report records a 61% CCHT-A pass rate across 44 examination administrations in 2025. That figure means roughly four out of ten candidates who sit for the exam do not clear the passing standard on a given attempt - a useful reality check before you schedule your test date.
This pass rate doesn't mean the exam is unreasonably difficult; it likely reflects the eligibility bar required just to sit for it (five continuous years of dialysis-technician employment, at least 5,000 clinical hours, and an active national CCHT, CHT, or CCNT credential). Candidates who qualify are already experienced, so the pass rate reflects genuine exam rigor rather than unprepared test-takers.
If you want the full context behind this number - including how it compares across administrations - see CCHT-A Pass Rate 2026: What the Data Shows. For the eligibility requirements themselves, review CCHT-A Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Registration, Fees, and Testing Permit Mechanics
Understanding the fee and permit structure matters because it affects how much room you have to prepare before your window closes. NNCC advertises a limited-time $100 initial examination fee effective April 1, 2026; its standard examination fee is $225. Once C-NET approves your application, it issues a 90-day testing permit, so your study plan needs to be tight and finished within that window - there's no indefinite runway.
| Item | Detail |
|---|---|
| Initial exam fee (limited-time, from Apr 1, 2026) | $100 |
| Standard examination fee | $225 |
| Testing permit validity | 90 days after approval |
| Renewal by continuing education | $100 |
| Renewal by examination (replaces CE requirement only) | $225 |
NNCC also provides free online practice-exam access after application approval - a 50-question official practice exam with 90-day access, timed to match your testing permit window. Pair that with independent review using CCHT-A Study Guide 2026: How to Pass on Your First Attempt and practice questions on our practice test platform to build familiarity with the question style before your permit expires.
A full cost breakdown, including renewal economics, is available in CCHT-A Certification Cost 2026: Complete Pricing Breakdown.
The FailSafe Provision If You Fall Short
Missing the passing standard of 95 doesn't mean you lose your existing credential. NNCC's FailSafe provision renews an eligible current CCHT for three years after an unsuccessful CCHT-A attempt. It's important to understand what this does and doesn't do: FailSafe protects your base CCHT status - it does not award the advanced CCHT-A credential itself.
Mapping Study Weeks to the Passing Standard
Since the passing standard rewards broad command of Clinical content specifically, your study calendar should mirror the domain weights rather than splitting time evenly across all four areas.
Clinical (52%)
- Patient assessment during treatment, vascular access complications, and treatment-related decision-making
- Review scenario-style questions since this domain drives most of your scaled score
Technical (20%)
- Machine function, water treatment, and troubleshooting logic
- Practice interpreting equipment scenarios, not memorizing part names
Role Responsibilities (18%)
- Scope-of-practice judgment calls unique to the advanced technician role
- Documentation and communication standards
Environment (10%) + Full Review
- Infection control and safety protocols
- Take the free NNCC practice exam once your 90-day permit is active, then close remaining gaps
This kind of weighted schedule is covered in more depth in CCHT-A Study Guide 2026: How to Pass on Your First Attempt, and if you want a fast-reference version of must-know facts to review in your final week, use CCHT-A Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Once you're comfortable with content, shift toward timed practice under exam-like conditions. Working through full-length question sets on our CCHT-A practice test platform helps you build the pacing needed to comfortably finish 150 scored questions plus pilot items within the three-hour limit.
Frequently Asked Questions
No. The passing standard is a scaled score of 95, calculated based on the difficulty of the specific questions on your test form, not a simple percentage of correct answers.
No. The January 2026 application handbook describes approximately 25 unscored pilot questions embedded among the 150 scored questions. They don't affect your scaled score, but you can't identify them during the exam.
NNCC's FailSafe provision renews an eligible current CCHT for three years after an unsuccessful CCHT-A attempt. It preserves your existing credential but does not grant the advanced CCHT-A designation.
Clinical, which makes up 52% of the exam - more than half of all scored content. Strong performance here has the largest impact on whether you clear the passing standard.
C-NET issues a 90-day testing permit after your application is approved, so your study timeline needs to fit within that window.
Understanding the passing standard is only one piece of preparing for CCHT-A. For background on the credential itself, see What Is CCHT-A? and CCHT-A Certification, and for career context after you pass, review CCHT-A Salary Guide 2026: Complete Earnings Analysis and Is the CCHT-A Certification Worth It? Complete ROI Analysis 2026.