NBRC CRT Exam Guide 2026: Pass the TMC at the Low Cut Score (FREE)

The CRT Credential Is Your License to Practice — Here's How to Pass the TMC in 2026 (Before It Retires)

The NBRC Certified Respiratory Therapist (CRT) is the entry-level credential that lets you legally work as a respiratory therapist in 49 of 50 U.S. states (Alaska is the lone exception). You earn it by passing the Therapist Multiple-Choice (TMC) Examination at the low cut score — the same single exam where a higher score earns you eligibility for the RRT credential.

2026 is the final year of the current TMC Examination. Starting January 1, 2027, the NBRC replaces the TMC + Clinical Simulation Examination (CSE) pathway with a single new Respiratory Therapy (RT) Examination — 185 items, 4 hours, $360 new / $300 repeat. The CSE will stay open through December 31, 2027 only for candidates who pass the TMC at the high cut score before year-end 2026. Applications for the TMC will not be accepted after December 15, 2026.

Translation: if you are testing in 2026, you get the shorter, cheaper, more familiar exam — and every current study resource on the market maps to it. This guide walks you through the verified 2026 cost, structure, the three NBRC content domains with current weights, a realistic 10-week plan, the specific blood gas and mechanical ventilation traps that sink most candidates, and the CRT vs RRT decision matrix. Everything is free.

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Start Your FREE CRT/TMC Prep Today

Start FREE CRT TMC Practice QuestionsPractice questions with detailed explanations

Domain-by-domain drills across Patient Data Evaluation, Troubleshooting & Infection Control, and Interventions — plus ABG interpretation sets, ventilator waveform quizzes, and NBRC-style information-gathering vs decision-making items. 100% free, no credit card.

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CRT (TMC) Exam At a Glance (2026)

All figures verified against NBRC's official CRT, RRT, and TMC FAQ pages (nbrc.org) and the Candidate Handbook.

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What the CRT Is — and Why It Matters in 2026

The CRT is the minimum legal credential to work as a respiratory therapist in 49 states. It signals that you:

1. Graduated from a CoARC-accredited respiratory therapy program (associate's or higher — the vast majority are 2-year AAS programs at community colleges)
2. Passed the NBRC's entry-level competency standard on the TMC
3. Can evaluate patient cardiopulmonary data, set up and troubleshoot oxygen delivery and mechanical ventilation equipment, and initiate and modify therapeutic interventions under physician orders

Every hospital, long-term acute care facility, home health respiratory agency, and sleep lab in the U.S. requires at least the CRT for RT hires. Most hospitals now prefer (or require) the RRT for new graduates — but the CRT is the credential that earns you the state license so you can begin practicing while you study for the CSE.

Why Test in 2026 (Not Wait for the 2027 Exam)

• Shorter test. 160 items / 3 hours versus 185 items / 4 hours on the new RT Examination.
• Cheaper. $190 vs $360 for first attempt. That's $170 in savings.
• Proven content outline. The current TMC Detailed Content Outline has been in effect since January 2020 — every major review book, question bank, and YouTube channel maps to it. The 2027 exam is based on a new job analysis.
• Simulation-free CRT path. The low cut score awards the CRT with zero simulation items. In 2027, the new RT Examination incorporates depth-of-clinical-judgment items modeled on the old CSE.
• December 15, 2026 cutoff. Applications will not be accepted for the TMC after that date. If you wait, you will take the 2027 exam by default.

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Who Should Take the CRT Path

Ideal Candidates

1. Current CoARC respiratory therapy students graduating in spring/summer/fall 2026
2. Recent CoARC graduates who have not yet sat for the TMC
3. Foreign-trained respiratory practitioners who meet the NBRC's international eligibility pathway
4. Currently licensed CRTs seeking to re-test for RRT eligibility at the high cut score

Important: CRT vs RRT Target Score

You sit for one exam — the TMC. What differs is your target score:

• Low cut score → CRT credential. You can work as a respiratory therapist.
• High cut score → CRT credential + CSE eligibility. You then sit the Clinical Simulation Examination (separate $220 new / $170 repeat fee, 4 hours, 22 simulations) to earn RRT.

Most candidates aim for the high cut score and "settle for" CRT only if they miss it. This guide focuses on the CRT standard — but the study plan positions you for either outcome.

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Eligibility: CoARC-Accredited Programs Only

The NBRC only accepts candidates who graduated from a CoARC (Commission on Accreditation for Respiratory Care) accredited program. There are two degree paths:

Some key admission nuances:

• Associate + Bachelor's combined admission pathway exists for candidates with a non-RT bachelor's degree who later completed a CoARC program
• International applicants must have their credentials evaluated by CGFNS and meet equivalent CoARC-program standards
• CRT-to-Registry Admission Policy — this legacy path (which allowed experienced CRTs without a CoARC advanced program to sit the CSE) expires December 31, 2026 alongside the TMC
• Your CoARC School Director must verify your graduation before NBRC releases the admission ticket

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Exam Format: 3 Hours of Multiple Choice (2026)

The TMC is a computer-based, multiple-choice exam delivered at PSI / AMP test centers.

Target pace: ~1 minute 7 seconds per question. Flag anything over 90 seconds and return at end. Most candidates finish in 2.0–2.5 hours.

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Two Question Types: Information Gathering vs Decision Making

This is the single most important structural fact about the TMC that most candidates underestimate.

The 140 scored items are built from two distinct cognitive types:

Decision-making items dominate — which is why the TMC emphasizes applying knowledge to clinical scenarios, not memorizing facts. NBRC cognitive-level target mix on the 2020–2026 blueprint:

If you can interpret an ABG, read a ventilator waveform, and recognize the next intervention for a deteriorating patient, you will pass. If you only memorize the textbook, you will not.

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The Three TMC Content Domains (2020–2026 Blueprint)

The official NBRC Detailed Content Outline (effective January 2020 – December 31, 2026) organizes the exam into three domains with published scored-item counts (not just percentages):

Domain III alone is half the exam. Master it and you have a cushion on the smaller domains.

Domain I Deep Dive — Patient Data Evaluation and Recommendations (~36%)

You demonstrate you can gather, interpret, and recommend additional data to evaluate a patient. Expect heavy testing on:

Worked ABG Example — The Canonical TMC Question

Scenario: A 62-year-old male with a history of COPD is brought to the ED in respiratory distress. Room-air ABG: pH 7.26, PaCO2 78 mmHg, PaO2 52 mmHg, HCO3 34 mEq/L, SaO2 82%.

Interpretation:

Diagnosis: Acute on chronic respiratory acidosis with hypoxemia (COPD exacerbation).

Decision-making item would ask: "What should the therapist recommend?"

• Correct answer: Initiate NIV (BiPAP) — GOLD Report strong indication for COPD exacerbation with pH <7.35 and PaCO2 >45
• Not intubation yet (NIV first — intubate only if NIV fails or contraindicated)
• Not high-flow O2 alone (risk of CO2 retention; titrate to SpO2 88–92% for COPD)
• Not nasal cannula at 2 L (insufficient)

Teaching points:

• Target SpO2 88–92% for COPD patients (not 95–100%) — avoid worsening CO2 retention
• NIV is first-line for hypercapnic COPD exacerbations with pH 7.25–7.35
• Chronic compensation: for every 10 mmHg ↑ in chronic PaCO2, HCO3 rises ~3.5 mEq/L

Domain II Deep Dive — Troubleshooting, Quality Control, Infection Control (~14%)

The smallest domain but the highest-yield per hour — questions here are often recall-level and straightforward if you know your equipment.

Memorize this: Cylinder duration formula for an E-size O2 cylinder:

Duration (min) = (Pressure in psi × 0.28) ÷ Flow (L/min)

Example: E-cylinder at 1500 psi, running at 6 L/min → (1500 × 0.28) ÷ 6 = 70 minutes.

Domain III Deep Dive — Initiation and Modification of Interventions (~50%)

The biggest domain. Your pass/fail outcome is decided here.

Worked Ventilator Example — Hypoxemia in ARDS

Scenario: A 45-year-old woman with COVID-19 ARDS is mechanically ventilated on AC/VC: VT 400 mL (IBW 65 kg → 6.2 mL/kg), RR 18, FiO2 0.70, PEEP 10. SpO2 86%. Plateau pressure 28 cmH2O. ABG: pH 7.37, PaCO2 42, PaO2 58.

Decision: The patient is hypoxemic on high FiO2. What should the therapist recommend?

• Correct: Increase PEEP per the ARDSnet high-PEEP table (e.g., FiO2 0.70 paired with PEEP 14–16)
• Not increase VT (6 mL/kg IBW is the ARDSnet protective target; raising VT above 8 mL/kg increases VILI risk)
• Not prone only yet (consider prone if P/F <150 after optimizing PEEP/FiO2)
• Not switch to pressure control (mode switch alone doesn't fix oxygenation)

Teaching points:

• ARDSnet low-VT strategy: 6 mL/kg predicted body weight, plateau ≤30 cmH2O
• PEEP/FiO2 titration tables — two tables (lower-PEEP and higher-PEEP); know both
• Prone positioning — P/F <150 despite optimization
• Permissive hypercapnia — accept pH ≥7.15 to preserve low VT

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Pass Rate and Difficulty: The Honest Picture

NBRC does not publish first-time pass rates by cut score publicly on a per-exam basis, but aggregated CoARC data has historically shown:

• CRT (low cut score) first-time pass rate: ~80–85%
• RRT-eligible (high cut score) first-time pass rate on the TMC: ~60–70%
• CSE first-time pass rate (for those who clear the TMC high cut): ~70–75%

Candidates most often fail because:

1. Weak ABG interpretation. Acid-base is the single most tested skill on the exam. If you cannot read an ABG in 10 seconds, you will not pass.
2. Inability to troubleshoot ventilators. High-pressure and low-pressure alarms recur in multiple items.
3. Memorization instead of application. 75–85% of items are application or analysis, not recall.
4. Ignoring neonatal and pediatric content. Program minimums for peds items are set — you cannot skip neonatal RDS, surfactant, and NRP.
5. Running out of time. 160 items in 180 minutes = ~68 seconds per item if you reserve 10 minutes for review.

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10-Week TMC Study Plan (Targeting the CRT Low Cut Score)

Realistic plan for a recent CoARC graduate testing in 2026. Scale up to 12 weeks if working full-time.

Total: ~108 study hours over 10 weeks. The NBRC's own SAE ($50) is the single most predictive practice exam available — most review instructors recommend saving it for week 10 as your dress rehearsal.

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Recommended Resources for CRT/TMC Prep

The respiratory therapy review market is mature. These are the resources CoARC program directors and practicing RTs actually recommend:

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Cost & Registration: How to Apply for the TMC

Step-by-step (2026)

1. Verify CoARC graduation — your program's School Director must confirm your completion to NBRC
2. Create an NBRC account at nbrc.org
3. Submit TMC application + $190 fee (new applicant) before December 15, 2026
4. Receive Authorization to Test (ATT) email — typically within 5–10 business days
5. Schedule with PSI / AMP — choose an authorized test center; dates fill up in late 2026, book early
6. Bring two forms of ID on test day — primary government photo + signature ID
7. Pass/Fail shown on screen at exam end; detailed score report emailed within 1–2 business days

If You Fail

• Attempts 1–3: No waiting period. Pay $150 repeat fee. Reschedule immediately.
• After 3 attempts: 120-day mandatory wait before the 4th attempt.
• Your CRT credential (if already earned at a lower cut score) remains valid — you are only re-testing to achieve RRT eligibility.

Before December 15, 2026 Deadline

All TMC applications must be submitted by December 15, 2026 and tested by December 31, 2026. After that, candidates must take the new Respiratory Therapy (RT) Examination — 185 items, 4 hours, $360 new / $300 repeat.

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Recertification: The NBRC Credential Maintenance Program (CMP)

CRT credentials are not lifetime — since 2002, all new NBRC credentials are subject to the Credential Maintenance Program (CMP).

CMP Requirements (2026)

Free / Low-Cost CE Sources

• AARC — free webinars, PACT courses, annual Summer Forum, Congress (discounted for members)
• State respiratory care societies — free CE at chapter meetings
• Hospital in-services — most count toward NBRC CE
• Journal CE — AARC's Respiratory Care journal offers CE quizzes
• Free CEU websites — verify each is AARC-approved before claiming credit

If You Miss CMP Requirements

Your CRT moves to inactive status. You must then retake and pass the TMC (or the new RT Examination) to reactivate. Don't let this happen — $25/year and 30 hours every 5 years is trivial compared to a retake.

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Test-Taking Strategy for the TMC

Before the Exam

• Confirm your PSI / AMP appointment 48 hours before
• Bring two forms of ID (primary government photo + signature)
• Arrive 30 minutes early
• Eat a real breakfast; limit caffeine to your normal dose
• No reference materials are allowed — study materials stay in the car

During the Exam

• Target 68 seconds per question (10 minutes held in reserve for review)
• Flag anything >90 seconds and return at end
• For information-gathering items, ask "What data do I need next?" — the correct answer is usually the least invasive test that yields the needed info
• For decision-making items, ask "What intervention does this data require right now?" — the correct answer is usually the AARC Clinical Practice Guideline action
• Elimination workflow — cross out options that violate a CPG, safety standard, or scope of practice
• For ABG items, calculate first, interpret second — don't let the scenario narrative bias you
• Never leave a question blank — unanswered items are scored wrong

NBRC Question Wording Tips

• "Recommend" → you're suggesting to the physician (information-gathering or diagnostic)
• "Initiate" → you're acting on a physician order (decision-making)
• "Modify" → adjust a current therapy (ventilator changes, O2 titration)
• "Appropriate" → correct AND aligned with a CPG or safety standard
• "First" or "best" or "most" → a higher-order selection — two options may work, but one is superior

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Common Pitfalls That Cost CRT Candidates Points

1. Weak acid-base fundamentals. If you cannot read an ABG in <10 seconds, stop everything and drill until you can.
2. Confusing Excludes1 vs Excludes2 in CPGs. Oxygen titration for COPD (88–92%) vs non-COPD (94–98%) — know the target.
3. Ignoring neonatal/pediatric. NBRC has minimum pediatric item targets. Surfactant, NRP, CPAP for RDS, and bronchiolitis appear every exam.
4. Overspecifying vent modes. Don't jump to APRV or PRVC when the scenario asks for a standard AC/VC adjustment.
5. Missing infection control precautions. TB/measles/varicella → N95 + AIIR. Flu/pertussis → droplet. C. diff → contact + soap (not alcohol gel).
6. Running out of time on case scenarios. Long stems intimidate — but often only the last sentence matters. Skim, find the actual question, then re-read the relevant data.
7. Treating the on-screen calculator as optional. Use it for every P/F, A-a, VD/VT, and cylinder duration item.
8. Skipping the NBRC SAE. The official Self-Assessment Exam ($50) is the most predictive practice tool. Take it in week 10.

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Salary and Career Outlook (2026)

The BLS tracks respiratory therapists under OCC 29-1126.

CRT Salary Ranges (2026)

CRT is the entry credential, so pay reflects the first year or two of practice:

Important: Most hospitals prefer or require the RRT for new hires, and many offer a pay differential for RRT over CRT. The canonical career path is CRT → work 6–12 months → sit the CSE for RRT → specialize (ACCS, NPS, SDS, CPFT, AE-C) 2–3 years later.

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CRT vs RRT vs New RT Examination — The Decision Matrix

This is the most important pre-registration decision in 2026.

Recommended Strategy

• Graduating in 2026 → sit the TMC in 2026. Even if you only earn the CRT, you can retake for RRT eligibility within the 120-day retake window.
• Already a CRT seeking RRT → sit the TMC in 2026 at the high cut score and schedule the CSE before Dec 31, 2027.
• Graduating in 2027 → take the new RT Examination. You have no TMC option.
• International candidate with CoARC-equivalent evaluation complete → sit 2026. The current TMC is better-documented.

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Related NBRC Credentials

Once you hold the CRT (and usually the RRT), the NBRC offers specialty credentials that unlock specialist roles and pay differentials:

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Career Advancement Roadmap

Year 0 (graduation): Sit TMC in 2026 → earn CRT (or CRT + RRT eligibility)

Year 0–1 (hospital floor): Work as CRT while preparing for CSE; most hospitals give you 12 months to earn RRT

Year 1 (RRT): Sit CSE → earn RRT → pay bump of $5,000–$10,000/yr typical

Year 2–3 (specialization): Pick one specialty credential (ACCS, NPS, SDS) based on your clinical area

Year 3–5 (leadership or advanced practice): Lead RT, clinical educator, manager, advanced practice (some states now recognize APRT), or flight RT

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Ready to Pass the CRT TMC in 2026?

Start Your FREE TMC Practice →Practice questions with detailed explanations

Domain-I ABG and CXR drills, Domain-II infection control and alarm sets, and Domain-III mechanical ventilation, pharmacology, and neonatal scenarios. 100% free, no credit card.

Pair it with the NBRC Self-Assessment Exam in your final week and at least one full-length timed practice exam, and you'll walk into PSI / AMP ready — before the TMC retires on December 31, 2026.

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Official Sources

• NBRC — Certified Respiratory Therapist (CRT) official page (nbrc.org/examinations/crt)
• NBRC — Registered Respiratory Therapist (RRT) official page
• NBRC TMC Detailed Content Outline (effective January 2020 – December 31, 2026)
• NBRC — "Examination Changes Coming in 2027" FAQ
• NBRC Credential Maintenance Program (CMP) Brochure
• NBRC Candidate Handbook (2026 edition)
• CoARC — Commission on Accreditation for Respiratory Care program directory
• AARC — Understanding Credentials (aarc.org)
• BLS Respiratory Therapists OES 29-1126 (salary and employment data)