- RRT-ACCS is issued by the NBRC and requires holding the RRT credential for at least one year first.
- The exam has 170 multiple-choice items (150 scored, 20 unscored pretest) in 240 minutes.
- Respiratory Critical Care carries 80 scored items versus 70 for General Critical Care - the larger domain.
- New-applicant fee is $300, with a $40 AARC discount bringing it to $260 for eligible members.
What Is RRT-ACCS Certification?
The RRT-ACCS - Registered Respiratory Therapist, Adult Critical Care Specialty - is a specialty credential built for respiratory therapists who work with critically ill adults in intensive care settings. It signals that a therapist has demonstrated advanced knowledge beyond entry-level respiratory practice, covering the physiology, equipment management, and clinical decision-making that define adult ICU care. If you're still mapping out exactly what this credential represents before diving into logistics, the overview at What Is RRT-ACCS? and the plain-language breakdown in RRT-ACCS Meaning are good companion reads.
This article focuses on the practical mechanics: who runs the exam, what's tested, how the fees work, and how to think about your preparation timeline around the two content domains that make up the test.
Who Administers the Exam
The National Board for Respiratory Care (NBRC) governs the RRT-ACCS credential and defines the examination content, commonly abbreviated ACCS. Actual test delivery is handled by PSI, the testing provider responsible for scheduling and administering the exam at approved centers. Understanding this split matters because eligibility and content decisions come from the NBRC, while appointment logistics, rescheduling, and test-day procedures run through PSI.
Eligibility Requirements
There's one non-negotiable prerequisite: you must hold the RRT credential for at least one year before you're eligible to apply for the RRT-ACCS exam. This isn't a paperwork formality - it exists because the ACCS exam assumes a baseline of clinical respiratory practice that a brand-new RRT typically hasn't yet accumulated.
For a full breakdown of documentation, timing, and how the one-year clock is calculated, see RRT-ACCS Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Exam Format and Question Style
The RRT-ACCS exam consists of 170 multiple-choice questions: 150 are scored and 20 are unscored pretest items used to evaluate future questions. Candidates get 240 minutes to complete the exam. Because pretest items are indistinguishable from scored items during the test, candidates should approach every question with equal focus rather than trying to guess which ones "count."
The exam is delivered closed book at the testing center. An on-screen calculator is provided within the testing software; personal calculators are not permitted. Breaks are allowed, but the clock does not stop during them, so any break time comes out of your 240-minute allotment. Forms are assembled using linear-on-the-fly assembly, meaning each candidate receives a form built from a pool of items matched to the blueprint's specifications rather than a single fixed form.
Key Takeaway
Plan your 240 minutes with breaks in mind - since the clock never pauses, treat any bathroom or stretch break as active exam time, not a free pause.
The Two Content Domains
The current Detailed Content Outline, effective August 2026, organizes the RRT-ACCS exam into two domains. Each candidate should understand not just the topics but the relative weight of each area, since that weight should directly shape study time.
Domain 1: Respiratory Critical Care (80 scored items)
This is the larger of the two domains and covers the respiratory-specific clinical management of critically ill adults - ventilator strategies, airway management, oxygenation and ventilation troubleshooting, and respiratory-focused diagnostic interpretation in the ICU context.
- Largest single scoring block on the exam at 80 of 150 scored items
- Demands fluency with advanced mechanical ventilation scenarios
- Requires interpreting respiratory-specific data trends in critically ill adults
Domain 2: General Critical Care (70 scored items)
This domain addresses the broader critical care picture beyond the respiratory system - hemodynamics, multi-system patient assessment, pharmacologic considerations, and general ICU management principles that a respiratory therapist working in critical care must integrate alongside respiratory-specific knowledge.
- 70 scored items, close in size to Domain 1 but slightly smaller
- Covers systemic, non-respiratory critical care concepts
- Tests integration of respiratory care within whole-patient ICU management
Together these two domains account for all 150 scored items on the exam. For an item-by-item breakdown of subtopics within each domain, the dedicated guide at RRT-ACCS Exam Domains 2026: Complete Guide to All 2 Content Areas goes deeper than what fits here.
| Domain | Scored Items | Relative Weight |
|---|---|---|
| Respiratory Critical Care | 80 | Largest domain |
| General Critical Care | 70 | Second-largest domain |
Registration and Cost Mechanics
Understanding the fee structure before you apply prevents surprises at checkout. The standard fee for new applicants is $300. If you're reapplying after a previous attempt, the fee drops to $250. Eligible AARC members receive a one-time $40 discount on their first application, which brings that initial fee down to $260 - but only when the discount is properly redeemed through the AARC application link rather than applied after the fact.
Attempt spacing also matters for budgeting and planning: candidates are allowed two initial attempts without any waiting period between them, but any attempt after that requires waiting at least 180 days. This structure rewards thorough first-attempt preparation, since a quick retake is only available for the first retry.
For a complete line-item breakdown of every fee scenario, including reapplication and CE-based renewal costs, see RRT-ACCS Certification Cost 2026: Complete Pricing Breakdown.
Preparing by Domain Weight
Because Respiratory Critical Care carries more scored items than General Critical Care, it deserves proportionally more study time - but not so much that General Critical Care gets neglected, since 70 items is still nearly half the scored exam. A practical approach is to sequence your review so that denser respiratory-specific content (ventilator management, airway topics) gets extended early attention, while systemic and multi-organ critical care concepts get dedicated, uninterrupted blocks later in your timeline rather than being squeezed in as an afterthought.
Respiratory Critical Care Foundations
- Review advanced ventilator strategies and airway management scenarios
- Work through respiratory-focused diagnostic interpretation questions
General Critical Care Integration
- Study hemodynamics, pharmacology, and multi-system assessment
- Practice integrating respiratory decisions with whole-patient ICU management
Mixed Review
- Run timed practice sets covering both domains proportionally
- Rehearse the 240-minute pacing, including scheduled breaks
If you want a structured week-by-week plan rather than a summary, the full walkthrough at RRT-ACCS Study Guide 2026: How to Pass on Your First Attempt expands on this approach. And if you're unsure how demanding the exam actually is relative to your current clinical experience, How Hard Is the RRT-ACCS Exam? Complete Difficulty Guide 2026 addresses that directly using the published pass rate data.
Keeping Your Credential Current
Once earned, the RRT-ACCS credential is valid for five years. Renewal happens through the Credential Maintenance Program, which offers more than one path:
- Assessments and/or accepted CE: Depending on assessment performance, candidates are awarded 0, 15, or 30 CE credits toward maintenance. The CE route costs $25 annually, or $125 across the full five-year cycle.
- Retaking the highest-level exam: Passing the applicable highest-level examination in the final year of the cycle satisfies the maintenance requirement.
- Earning another NBRC credential: Obtaining an additional NBRC credential during the cycle can also fulfill maintenance requirements.
Passing status on the initial exam itself is determined by comparing your raw score against the NBRC's cut score - not a fixed percentage. If you want to understand exactly how that cut score works and what it implies about how many questions you can afford to miss, read RRT-ACCS Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Budget for the five-year cycle now: at $25 per year via the CE route, maintenance is predictable, but missing deadlines or CE requirements can jeopardize your credential status.
Who Hires RRT-ACCS Holders
RRT-ACCS credential holders typically work in adult intensive care units, medical and surgical ICUs, and critical care transport teams within hospitals that manage high-acuity adult patients. Because the credential specifically validates advanced adult critical care competency across both Respiratory Critical Care and General Critical Care domains, it's most relevant to therapists already practicing in or targeting ICU-level roles rather than general floor respiratory positions.
Employers value the credential as an objective marker that a therapist can manage complex ventilator scenarios and integrate that management with broader critical care decision-making - the exact split reflected in the exam's two domains. For a closer look at how this credential connects to job titles, hiring patterns, and career trajectory, see RRT-ACCS Jobs and the training pathway overview at RRT-ACCS Training. If you're still weighing whether the investment pays off relative to your career goals, Is the RRT-ACCS Certification Worth It? Complete ROI Analysis 2026 and RRT-ACCS Salary Guide 2026: Complete Earnings Analysis dig into that question directly.
Once you've decided to pursue it, the most efficient way to prepare is consistent, domain-weighted practice testing rather than passive reading. Working through realistic scored/unscored-style item sets on our practice test platform lets you rehearse the 240-minute pacing and question style before test day, and revisiting timed practice sessions repeatedly builds the stamina the exam actually demands.
Frequently Asked Questions
The exam has 170 multiple-choice questions - 150 scored and 20 unscored pretest items - with 240 minutes to complete the whole exam.
Respiratory Critical Care carries 80 scored items, making it the larger domain, while General Critical Care carries 70 scored items, under the Detailed Content Outline effective August 2026.
Yes. You must hold the RRT credential for at least one year before you're eligible to apply for the RRT-ACCS exam.
New applicants pay $300, while reapplicants pay $250. Eligible AARC members receive a one-time $40 discount on their first application, bringing that fee to $260 when redeemed correctly.
The credential is valid for five years. Renewal can be completed through assessments and/or accepted CE (with the CE route costing $25 annually or $125 across five years), by passing the applicable highest-level exam in the final year of the cycle, or by earning another NBRC credential.