- CARN requires a 75% correct-response standard on scored items to pass.
- The exam has 150 questions, but roughly 25 are unscored pilot items you can't identify.
- ANCB reported a 70% pass rate for 2025 under the current standard.
- Domain 5 (Care Management, Treatment, and Evaluation) carries 35% of the blueprint weight.
The Passing Score, Exactly
If you're searching for the single number that determines whether you become a Certified Addictions Registered Nurse, here it is: the Addictions Nursing Certification Board (ANCB) sets the passing standard for CARN at 75% of scored items. That's not 75% of all 150 questions on your screen - it's 75% of the questions that actually count toward your result, since a portion of the exam is unscored pilot content used to evaluate future items.
This distinction matters more than most candidates realize. A raw score of "112 out of 150 correct" doesn't map cleanly onto the passing standard, because you don't know which items are pilot questions and which are scored. Every question deserves the same attention and effort, but the arithmetic behind your pass/fail result is based only on the scored subset.
How the 150 Questions Break Down
The CARN exam is a computer-based test delivered through PSI, with C-NET handling applications and eligibility processing on behalf of ANCB. Candidates get three hours to complete 150 multiple-choice questions. Of those, approximately 25 are unscored pilot items woven throughout the exam without any label distinguishing them from scored questions.
That means your working assumption should be simple: treat every question as if it counts, because roughly 125 of them do. Books, notes, and calculators are prohibited during testing, so recall and clinical judgment have to be exam-ready, not reference-dependent.
If you want a full breakdown of what the testing experience feels like question-by-question, the How Hard Is the CARN Exam? Complete Difficulty Guide 2026 covers format-specific difficulty in more depth than we can here.
Key Takeaway
Don't try to guess which questions are "just pilot items." Answer every question with full effort - the unscored items are indistinguishable from scored ones during the actual test.
Why Domain 5 Decides Your Score
The 75% passing standard applies to the exam as a whole, but not all content is weighted equally. The 2025 role-delineation blueprint, implemented in 2026, breaks the exam into five domains:
Domain 1: Perform a Biopsychosocial SUD Assessment (15%)
Covers comprehensive intake, screening tools, and identifying biological, psychological, and social contributors to substance use disorders.
- Standardized screening and assessment instruments
- Co-occurring disorder identification
Domain 2: Assess Acute Care Needs of SUD Patients (20%)
Focuses on withdrawal management, overdose response, and recognizing when acute medical intervention is required.
- Withdrawal severity scoring
- Emergent risk stratification
Domain 3: Develop and Implement an Individualized Plan of Care (15%)
Tests ability to translate assessment findings into a workable, patient-specific treatment plan.
- Goal-setting collaborative frameworks
- Level-of-care matching
Domain 4: Educate and Promote Behavioral Change (15%)
Covers motivational interviewing, relapse-prevention education, and behavior-change counseling techniques.
- Stages-of-change application
- Family and community education roles
Domain 5: Care Management, Treatment, and Evaluation Throughout the Recovery Continuum, Including Special Populations (35%)
The largest and most heavily tested domain. It spans long-term recovery management, treatment modality selection, evaluating outcomes, and adapting care for special populations.
- Pregnant patients, adolescents, older adults, and co-occurring populations
- Continuum-of-care transitions and relapse response
Because Domain 5 alone accounts for more than a third of the exam, a candidate who is strong everywhere else but weak here faces a real risk of falling short of the 75% standard. Layer on the patient-problem distribution - opioid use disorder at 27% and alcohol use disorders at 25%, together representing 52% of the content - and it becomes clear that these two substance categories deserve outsized preparation time regardless of which domain they appear in.
For a domain-by-domain study breakdown with specific content lists, see the CARN Exam Domains 2026: Complete Guide to All 5 Content Areas.
| Domain | Weight | Relative Priority |
|---|---|---|
| Domain 5: Care Management & Special Populations | 35% | Highest |
| Domain 2: Acute Care Needs | 20% | High |
| Domain 1: Biopsychosocial Assessment | 15% | Moderate |
| Domain 3: Individualized Plan of Care | 15% | Moderate |
| Domain 4: Educate and Promote Behavioral Change | 15% | Moderate |
What a 70% Pass Rate Tells You
ANCB reported a 70% CARN pass rate for 2025. That figure describes the proportion of candidates who cleared the 75% scored-item standard, not the standard itself. It's a useful reality check: most candidates pass, but roughly three in ten do not on a given attempt, which suggests the exam rewards deliberate domain-weighted preparation over general nursing experience alone.
If you want the fuller context behind that number - including how it compares across recent testing cycles - the CARN Pass Rate 2026: What the Data Shows article goes deeper into the trend.
Fees, Eligibility, and the 90-Day Window
Understanding the passing score only matters once you're actually eligible to sit for the exam. CARN eligibility requires:
- A current, qualifying RN license
- At least 2,000 hours of addictions-related RN practice within the preceding three years
- 30 continuing-education hours within the preceding three years, with at least 51% specific to addictions nursing
The exam fee is $300, or $250 with a qualifying ASAN, IntNSA USA, or NOVA membership. C-NET processes applications, and once approved, you receive a 90-day testing window to schedule and sit for the exam through PSI. Testing itself is available year-round - there are no fixed quarterly dates - and results are delivered immediately after you finish.
For the full eligibility checklist and documentation tips, see CARN Requirements 2026: Eligibility, Prerequisites & How to Qualify. For a complete cost comparison including renewal fees, check the CARN Certification Cost 2026: Complete Pricing Breakdown. And if scheduling logistics are your main concern right now, the CARN Exam Dates 2026: Testing Windows, Deadlines & Scheduling article walks through the 90-day window in detail.
Key Takeaway
Your 90-day testing window starts the moment your application is approved - don't apply until your study plan is far enough along that you can realistically test within that period.
Mapping Study Time to the Passing Standard
Because Domain 5 is worth more than double some of the other domains, an even split of study time across all five areas is inefficient. A weighted approach - allocating study hours roughly in proportion to blueprint percentage - gives you the best shot at clearing 75% on scored items.
Domain 5 Foundation
- Recovery continuum stages and level-of-care transitions
- Special population considerations: pregnancy, adolescents, older adults
- Opioid use disorder and alcohol use disorder case scenarios, since together they cover 52% of patient-problem content
Domain 2: Acute Care Needs
- Withdrawal severity assessment tools
- Overdose recognition and emergent response protocols
Domains 1, 3, and 4
- Biopsychosocial screening instruments
- Individualized care planning frameworks
- Motivational interviewing and behavior-change education
Integration and Timed Practice
- Full-length timed practice sessions under three-hour conditions
- Review weak domains identified through practice performance
- Confirm C-NET application status and 90-day window timing
This kind of weighted scheduling - spending proportionally more time on the highest-value domain rather than treating all content equally - is the single most CARN-specific study adjustment you can make. For a more granular week-by-week plan built entirely around these five domains, see the CARN Study Guide 2026: How to Pass on Your First Attempt. You can also run full-length timed sessions on our practice test platform to simulate the three-hour format before exam day.
Test-Day Mechanics That Affect Scoring
A few procedural details directly affect how you perform against the 75% standard:
- No reference materials. Books, notes, and calculators are prohibited, so any medication dosing math or DSM-based criteria recall has to be memorized, not looked up.
- Three-hour time limit. Across 150 questions, that's an average of 1.2 minutes per question - tight enough that lingering too long on Domain 5 case-based items can cost you time elsewhere.
- Immediate results. You'll know whether you cleared the passing standard before you leave the testing center, which removes the waiting-period anxiety common with other credentialing exams.
- Unlabeled pilot items. Since roughly 25 of 150 questions are unscored and unidentified, pacing strategy should assume the full 150 count.
Once certified, maintaining your credential requires 2,000 practice hours and 60 continuing-education hours (at least 51% addictions-specific) across a four-year renewal cycle, at a cost of $275 (or $225 with qualifying membership) - worth planning for well before your first renewal date.
If you're still deciding whether the investment of time, the $300 (or $250) exam fee, and the ongoing renewal commitment make sense for your career path, the Is the CARN Certification Worth It? Complete ROI Analysis 2026 article weighs that decision against the requirements covered here. And if you want a condensed, printable version of every number in this article - the 75% standard, the 150-question format, the domain weights - bookmark the CARN Cheat Sheet 2026: One-Page Review of Must-Know Facts for last-minute review.
FAQ
ANCB sets the passing standard at 75% of scored items. Since roughly 25 of the 150 questions are unscored pilot items, this 75% applies to the scored subset, not the full question count.
Not necessarily. ANCB reported a 70% pass rate for 2025, meaning close to three in ten candidates did not clear the 75% standard that cycle. Targeted preparation around the domain weights matters.
Domain 5, Care Management, Treatment, and Evaluation Throughout the Recovery Continuum, Including Special Populations, carries 35% of the blueprint weight - more than double several other domains - making it the highest-priority content area.
No. Books, notes, and calculators are prohibited during the computer-based test delivered through PSI, so all recall and calculation must be done from memory.
Results are provided immediately after you complete the exam at the PSI testing center, so you'll know your pass/fail outcome before leaving.