- What the R.R.A. Credential Actually Is
- Who Issues It and Who Qualifies
- The Eligibility Path in Plain Terms
- How the Exam Is Built
- The Eight Reported Content Areas
- Scoring, Attempts, and Pass Data
- Fees and Registration Mechanics
- Keeping the Credential Active
- Sequencing Your Preparation Around the Domains
- Frequently Asked Questions
- R.R.A. is the ARRT's Registered Radiologist Assistant credential, built on top of existing ARRT Radiography certification.
- The exam runs six hours of testing: Session 1 selected-response, Session 2 objectively scored case studies.
- Passing means a scaled score of 75 on a 1-99 scale, not 75% correct.
- Case Study (25%) and Abdominal Section (16%) are the two heaviest reported categories.
What the R.R.A. Credential Actually Is
RRA certification refers to the Registered Radiologist Assistant credential, styled R.R.A. by the American Registry of Radiologic Technologists (ARRT). It is an advanced-practice credential for radiologic technologists who have completed a recognized Radiologist Assistant (RA) program and who work in an extended role alongside radiologists. It is not an entry-level imaging credential. You do not arrive at it from nowhere: current ARRT Radiography certification and registration are standard prerequisites, and the R.R.A. sits on top of that foundation.
If you are still sorting out terminology, our short explainers on what RRA is and what RRA stands for cover the naming basics. This article goes further: it walks through the structure of the credential, the exam, the money, and the maintenance obligations, so you can decide whether the path fits your career.
Who Issues It and Who Qualifies
The ARRT issues the credential and administers the examination through Pearson test centers. Candidates are typically radiographers who have completed an RA program, and the employers who value the credential are the ones that use radiologist assistants to extend radiologist capacity: hospital radiology departments, academic medical centers, and large imaging practices. For more on the employment side, see our overview of RRA jobs and the RRA salary guide.
A separate pathway also leads to the same examination. The RPA-to-R.R.A. admission route is for current Registered Practitioner Assistant credential holders (CBRPA) who also hold current ARRT Radiography credentials and are in current clinical practice. It does not create a different or lesser credential; those candidates sit for the same R.R.A. exam and earn the same R.R.A. designation.
The Eligibility Path in Plain Terms
Standard eligibility has several moving parts, and the details change depending on when you completed your RA program. The full breakdown lives in our RRA requirements guide, but here is the shape of it.
Core requirements for the standard route
- Current ARRT Radiography certification and registration.
- Completion of a recognized Radiologist Assistant program.
- The applicable graduate-degree and clinical-experience requirements.
- A clinical portfolio documented per the application packet.
- Current ACLS (Advanced Cardiac Life Support) certification.
- Compliance with ARRT ethics requirements.
The degree and experience rules shift by completion date
| Program completion | Degree requirement | Imaging experience requirement |
|---|---|---|
| On or after January 1, 2023 | Master's or doctoral degree required | Governed by the 2025 rule below if applicable |
| On or after January 1, 2025 | Master's or doctoral degree required | Two years of full-time patient-care-related medical-imaging experience after Radiography credentials; cannot be earned concurrently with RA-program activities |
| Before 2025 (published exception) | Per applicable earlier rules | One year, with concurrent experience permitted |
Earlier degree exceptions exist but are separate from the current graduate-degree route, so check the ARRT education requirements for your exact completion year rather than assuming the current rule applies to you.
How the Exam Is Built
The R.R.A. exam is a two-session, six-hour test. The handbook's full appointment is 410 minutes once you include the break and non-testing activities, so plan your day around that, not just the testing time.
Session 1: selected response
Session 1 contains 200 scored selected-response questions plus 30 pilot questions and allows four hours. Pilot questions are unscored items used to evaluate future content; you will not know which ones they are.
Session 2: case studies
Session 2 allows two hours and contains at least 30 scored case-study questions plus a variable pilot allocation. The 2026 handbook table displays 30+ scored and 20+ pilot items and labels the overall total approximately 280. Treat the exact count as flexible: older documentation described a fixed 20 unscored case items, but that should not be read as a fixed current total.
Since January 2023, case-study responses are objectively scored. The old essay-style format is gone, which changes how you should prepare: you need to reason through clinical scenarios and select the best answers, not write prose.
Key Takeaway
Session 1 cannot be reopened once Session 2 begins. Use your Session 1 review time deliberately, because there is no going back. Personal reference materials and personal calculators are not allowed; an approved supplied or on-screen calculator is available.
The Eight Reported Content Areas
ARRT's annual exam report publishes whole-exam reporting categories and weights. These eight categories are the numbers candidates actually see in performance reporting, so they are the most practical lens for prioritizing study time. For deeper treatment of each, see our RRA exam domains guide.
| Domain | Weight |
|---|---|
| Patient Management | 14% |
| Pharmacology | 7% |
| Patient Safety, Radiation Protection, and Equipment Operation | 11% |
| Abdominal Section | 16% |
| Thoracic Section | 9% |
| Musculoskeletal and Endocrine Sections | 9% |
| Neurological, Vascular, and Lymphatic Sections | 9% |
| Case Study | 25% |
Case Study (25%)
The largest separately reported weighted category. Selected response contributes 75% of points and case study 25%, so this is a quarter of your score from one session.
- Integrates assessment, decision-making, and procedure knowledge in one scenario.
- Rewards candidates who can connect pharmacology, patient management, and anatomy rather than recall isolated facts.
Abdominal Section (16%)
The largest separately reported procedural category. Expect it to reward thorough preparation on abdominal procedures and the patient-management and pharmacology issues that accompany them.
Patient Management (14%) and Pharmacology (7%)
Together these account for 21% of the exam and underpin nearly every other domain, since procedures involve patient assessment, consent-related considerations, and medication decisions.
A note on how the specification is organized
The 2023 content specification organizes selected-response objectives differently from the reporting categories above: Patient Care (56 scored items), Safety (28), and Procedures (116). Those are item counts, not whole-exam percentage weights, so do not add them up against the table above. Procedures is the largest selected-response parent category, which is why the section-based domains collectively dominate the exam.
Scoring, Attempts, and Pass Data
Passing is a scaled score of 75 on a 1-99 scale. That is not 75% correct; scaling adjusts for form difficulty. Our RRA passing score guide explains the distinction in more detail.
Candidates get three examination attempts within three years. Reapplication carries its own fee, covered below, so a failed attempt has a real cost beyond the disappointment.
For calendar year 2025, the first-time pass rate was 75.0% among 24 first-time candidates. Keep the sample size in mind: 24 candidates is small, and the 37 total administrations that year includes repeat testers, so it is not the first-time cohort size. A small cohort means year-to-year swings are easy to over-read. We discuss this in what the pass rate data shows and in how hard the RRA exam is.
Fees and Registration Mechanics
| Item | Fee (USD) |
|---|---|
| Initial application/examination | $225 |
| Reapplication | $200 |
| Annual renewal | $65 |
No member versus nonmember exam fee differential is listed. The ordinary annual renewal fee covers the registrant's ARRT credentials rather than charging separately for each discipline. Exam fees are only part of the picture, though; program tuition, ACLS, and preparation materials add up. Our RRA certification cost breakdown and ROI analysis put the full picture in context.
Timing your application
ARRT announced an additional October 2026 administration. The next published window after October 14, 2026 is January 13-16, 2027, with an application postmark deadline of November 11, 2026. Dates are published and updated by ARRT, so confirm against the current schedule using our RRA exam dates guide before you commit to a plan.
Keeping the Credential Active
Earning the R.R.A. is not the end of the paperwork. Annual renewal is normally due by the end of your birth month, and the supporting Radiography credentials must be maintained too. Letting the foundation lapse puts the advanced credential at risk.
Continuing education runs on a biennial cycle: 50 credits total, including at least 25 Category A+ credits and at least 35 RRA-relevant credits. These are overlapping requirements, not additive totals. A single well-chosen credit can count toward more than one requirement, so you do not need 110 credits. All RRA credentials also carry a ten-year Continued Qualifications Requirements (CQR) cycle.
Sequencing Your Preparation Around the Domains
Generic study advice is easy to find; what matters here is ordering the material so it compounds. The case-study session draws on everything, so build foundations first and integrate last. For a full plan, see the RRA study guide and the one-page RRA cheat sheet.
Foundations: Patient Management, Pharmacology, Safety
- These three domains (Patient Management, Pharmacology, Patient Safety/Radiation Protection/Equipment Operation) total 32% and underlie every procedure.
- Learn medication decisions and patient-assessment logic before anatomy-heavy sections.
Section domains, heaviest first
- Start with Abdominal Section (16%), then Thoracic, Musculoskeletal and Endocrine, and Neurological, Vascular, and Lymphatic (9% each).
Case Study integration
- Practice scenario-based questions that mix domains, since Case Study is 25% on its own.
- Rehearse the two-session timing, including the no-return rule for Session 1.
You can pressure-test this plan with our RRA practice tests, which let you check which domains need more work before test day. If you want a structured place to start, begin with the main practice test site and work through the weak areas it surfaces.
Frequently Asked Questions
It stands for Registered Radiologist Assistant, an advanced ARRT credential styled R.R.A. See our pages on what RRA means and what RRA certification is for more naming detail.
Yes. Standard eligibility requires current ARRT Radiography certification and registration, along with a recognized RA program, the applicable graduate-degree and experience requirements, a clinical portfolio, current ACLS certification, and ethics compliance.
No. Passing is a scaled score of 75 on a 1-99 scale. Scaling accounts for differences between exam forms, so the raw percentage needed is not simply 75%.
Three attempts are allowed within three years. Reapplication costs USD 200, compared with USD 225 for the initial application and examination.
No. Since January 2023, case-study responses are objectively scored rather than graded as essays, so preparation should focus on scenario reasoning and selecting the best answer.