What Is RRT Certification?

What the RRT Credential Actually Is

RRT stands for Registered Respiratory Therapist. It is the advanced-level credential in respiratory care, awarded by the National Board for Respiratory Care (NBRC). Holders are the clinicians who manage ventilators, interpret arterial blood gases, titrate oxygen and aerosol therapy, and make bedside decisions for patients ranging from premature neonates to adults in multi-system failure. If you are researching the acronym itself, our explainers on what RRT stands for and what RRT is cover the basics; this article focuses on how the certification works in practice.

One note on terminology: several unrelated credentials share the "RRT" abbreviation. Everything here concerns the respiratory therapy credential issued by the NBRC, and nothing else.

The Two-Exam Route: TMC Then CSE

The most common misunderstanding about the current RRT pathway is that it is a single test. It is not. Under the 2026 route, you sit two separate examinations, in sequence:

1. The Therapist Multiple-Choice Examination (TMC). You must reach the high cut score. A lower cut score is a different outcome with different consequences, and TMC alone never awards RRT.
2. The Clinical Simulation Examination (CSE). After a qualifying high-cut TMC result, you sit the CSE. Passing it completes the RRT requirements.

How the CSE feels different

The CSE is not multiple choice in the usual sense. Each problem presents a patient scenario that unfolds in sections, and each section can contain multiple choices to select. You gather information, then make management decisions as the case evolves. The 2026 Candidate Handbook specifies a single CSE score summed across the whole examination, not separate pass thresholds for information gathering and decision making. That detail matters for older prep materials that describe two separate hurdles; they are out of date. Current numeric cut scores are not something we can verify, so see our page on the RRT passing score for how we handle that uncertainty.

Who Is Eligible

Standard eligibility requires that you are at least 18 years old and hold at least an associate degree from an eligible entry-into-practice respiratory program supported or accredited by CoARC. The CSE adds two further conditions: you must hold CRT status and have a qualifying high-cut TMC result.

Conditional legacy routes

The NBRC also lists several conditional routes for existing CRTs without a standard degree path:

• Four years as a CRT plus 62 specified college hours
• Two years as a CRT plus a qualifying respiratory associate degree
• Two years as a CRT plus a non-respiratory bachelor's degree and 62 specified hours
• A separately listed route for CSRT holders

These exceptions do not automatically continue into the 2027 pathway, so anyone relying on one should check timing carefully. For the full breakdown, see RRT requirements and eligibility.

What the Exams Cover

The content outlines are published as detailed content outlines for each exam. The TMC outline is effective January 2020 through December 31, 2026, and the CSE outline is effective January 2020 through December 31, 2027. The six headings below come from two different assessments: Domains 1 through 3 are TMC objective headings, and Domains 4 through 6 are CSE objective headings. The repetition is intentional. This is not a single six-domain test, and no combined weights exist. For a deeper treatment, see our guide to the RRT exam domains.

TMC domains

Those counts (50, 20, and 70) sum to the 140 scored TMC questions. We do not convert them to percentages here, because the NBRC publishes item counts rather than the percentages some third-party sites assert. The practical lesson is simple: Interventions is where the bulk of the scored TMC points sit.

CSE domains

CSE case mix

The scored CSE problems are assembled from defined case groups, which are assembly rules rather than extra domains:

Chronic airways disease dominates, so expect COPD and asthma scenarios to appear more than any other adult category. Neonatal and pediatric cases together account for four of the 20 scored problems, which is enough that skipping them is a real risk.

Fees, Testing Rules, and Retakes

A standard first pass through both exams totals USD 390. Eligible AARC members can use a one-time USD 40 first-CSE discount through the prescribed application process, bringing the total to USD 350. These figures exclude your education, study materials, membership dues, and state licensure. See our full RRT cost breakdown for planning around those add-ons.

Test-day rules

• Location: Supervised PSI assessment centers. Live remote proctoring ended December 31, 2024, so initial at-home delivery is not an option. The issuer's announcement is on the NBRC site.
• Closed book: Only the supplied virtual calculator is allowed.
• Breaks: Break time counts against your examination time, so a bathroom trip is paid for from the same clock you use for questions.

Retake limits

For each examination, three initial attempts are permitted without the waiting interval between attempts. Later attempts require 120 days between them. That is why a failed attempt should trigger a real diagnosis of what went wrong, not a rushed rebooking.

Reading the 2025 Pass-Rate Data Correctly

The NBRC's calendar-2025 reporting gives separate figures for separate groups, and they should not be multiplied together or averaged into a single "RRT pass rate":

Reported activity was 11,086 TMC administrations, 9,004 CSE administrations, and 5,196 RRT credentials awarded. The sharp gap between new and repeat TMC high-cut results is worth sitting with: repeat candidates are a self-selected group who already missed once, and the data suggest that simply retaking without changing your preparation is a poor strategy. For interpretation, see what the pass-rate data shows and how hard the RRT exam really is.

The 2027 Transition You Need to Know About

The pathway described above is the current 2026 route, and it is changing. A new Respiratory Therapy Examination takes effect in January 2027, and it works differently:

• One examination of 185 multiple-choice questions (160 scored, 25 pretest) over four hours
• Fees of USD 360 new and USD 300 repeat
• Lower and higher cut scores that lead directly to CRT and RRT respectively
• Applications opened October 1, 2026, with first examination availability on January 4, 2027

Deadlines for the current route

• TMC applications close December 15, 2026, and TMC testing ends December 31, 2026.
• The CSE remains available through December 31, 2027, but only for the eligible transition cohort.
• The CRT-to-registry admission policy expires December 31, 2026.

There is one genuine ambiguity: issuer wording about reaching the TMC high cut "prior to December 31, 2026" conflicts with the announced final testing date. If your result would land on December 31, get the NBRC to confirm your eligibility in writing before you rely on it. Official dates and fee updates live on the NBRC resources page, and our RRT exam dates guide tracks the scheduling side.

Keeping the Credential: CMP

RRT is not a one-time achievement. Credentials are maintained through the five-year Credential Maintenance Program (CMP), with a published exemption for credentials earned before July 1, 2002. You have three routes:

1. Assessment-based CE: You complete zero, 15, or 30 Category I credits, depending on how you perform on the assessment.
2. Re-examination: Pass the highest relevant examination during the final year of the maintenance cycle.
3. Additional credential: Earn another qualifying NBRC credential.

CMP payment is USD 25 per payment year before 2027 and USD 30 beginning in 2027. The brochure's text and rendered pages show a mix of old and new fee versions, but the live issuer FAQ confirms the 2027 effective date.

Where the Credential Gets You Hired

The RRT is the credential hospital respiratory departments look for when staffing critical care. Typical employers include acute-care hospitals and their ICUs, neonatal and pediatric intensive care units, long-term acute care and ventilator-weaning facilities, home care and durable medical equipment companies, and rehabilitation programs. Roles that expect the registry-level credential often involve ventilator management, rapid response and code teams, and supervision or education duties. Exploring openings is easiest through our RRT jobs overview, and for compensation context see the RRT salary guide and the ROI analysis. We avoid quoting specific salary numbers here because they vary widely by region, setting, and experience.

Sequencing Your Preparation

Preparation should follow the structure of the exams rather than a generic schedule. Because Interventions carries the largest TMC allocation and Patient Data the second largest, a sensible order front-loads those and leaves the smaller Troubleshooting domain for focused review near the end.

For a full methodology, see our RRT study guide and the one-page RRT cheat sheet. When you are ready to test yourself under realistic conditions, use the RRT practice tests and compare your results against the domains above.

Frequently Asked Questions

For more background on the credential itself, you can also browse our overview of RRT certification, and check current requirements directly with the issuer before you apply.