- What the R.R.A. Credential Actually Is
- Eligibility: The Gatekeeping Steps Before You Test
- The RPA-to-R.R.A. Pathway
- Exam Format: Two Sessions, Six Hours
- Where the Points Live: The Eight Reported Categories
- Scaled Score of 75 and the 2025 Pass Data
- Fees, Attempts, and Scheduling Mechanics
- Sequencing Your Preparation Around the Weights
- Maintaining the Credential After You Pass
- Frequently Asked Questions
- The R.R.A. is awarded by ARRT and requires current ARRT Radiography certification plus a recognized RA program.
- The exam has two sessions totaling six hours; case studies are objectively scored and worth 25% of points.
- Passing means a scaled score of 75 on a 1-99 scale, not 75% correct.
- The initial application and examination fee is USD 225; annual renewal is USD 65.
What the R.R.A. Credential Actually Is
The Registered Radiologist Assistant credential, styled R.R.A. by the American Registry of Radiologic Technologists (ARRT), is an advanced-practice credential built on top of a radiography foundation. It is not an entry-level imaging certification. Candidates are already registered radiographers who have completed a recognized Radiologist Assistant (RA) program, and the exam tests whether they can function at an advanced level alongside a supervising radiologist: managing patients, administering and understanding medications, protecting patients and staff from radiation, and working through the abdominal, thoracic, musculoskeletal, endocrine, neurological, vascular, and lymphatic sections of imaging practice.
If you are still orienting yourself on terminology, our explainers on what RRA certification is and what RRA stands for cover the basics. This article focuses on the practical path: who qualifies, what the exam looks like, where the points are concentrated, and what the credential asks of you afterward.
Eligibility: The Gatekeeping Steps Before You Test
Much of the real work of earning the R.R.A. happens before you ever schedule an exam. ARRT's standard route has several layers, and each one has documentation behind it. For a full walkthrough, see our RRA requirements guide; here is the structure in brief.
The standard requirements
- Current ARRT Radiography certification and registration. The R.R.A. sits on top of Radiography, and those supporting credentials must stay active.
- A recognized RA program. Your education must come from a program ARRT recognizes for radiologist assistants.
- Applicable graduate-degree and clinical-experience requirements. These depend on when you completed your program (see the table below).
- A clinical portfolio. Portfolio requirements were implemented in January 2023 and are documented in the ARRT application packet.
- Current ACLS certification. Advanced cardiac life support must be current at the time of application.
- Ethics compliance. ARRT's ethics requirements apply, as with its other credentials.
Degree and experience depend on your completion date
| Program completion | Degree requirement | Experience requirement |
|---|---|---|
| On or after January 1, 2023 | Master's or doctoral degree required | Depends on completion date (see next row for 2025 onward) |
| On or after January 1, 2025 | Master's or doctoral degree required | Two years of full-time patient-care-related medical-imaging experience after earning Radiography credentials; cannot be earned concurrently with RA-program activities |
| Before 2025 (published exception) | Earlier degree exceptions are handled separately from the current graduate-degree route | One year of experience, with concurrent experience permitted |
One timing rule deserves special attention: ordinary eligibility, including degree completion, must be established within three years of completing the professional program. Candidates who let documentation slide, or who delay finishing a degree, can run into this clock. Check your own dates against the current exam dates and deadlines well in advance.
The RPA-to-R.R.A. Pathway
ARRT also publishes a separate admission pathway for radiology practitioner assistants (RPAs). It is important to be precise about what this pathway is: it leads to the same R.R.A. examination, not to a replacement or alternative credential. Candidates who clear the pathway sit for the identical test and, if they pass, earn the same Registered Radiologist Assistant credential.
The pathway requires current CBRPA and ARRT Radiography credentials and current clinical practice, combined with one of three education-and-experience combinations:
- a master's or doctoral degree, or
- a bachelor's degree plus two years of imaging experience, or
- an associate degree plus four years of imaging experience.
The ordinary three-year post-program deadline is waived for this route. If you are coming from an RPA background, confirm the details on ARRT's RPA-to-R.R.A. pathway page before building your timeline.
Exam Format: Two Sessions, Six Hours
The R.R.A. exam is structured as two distinct sessions, and understanding that structure changes how you pace yourself. Our difficulty guide discusses how candidates experience the exam; here are the mechanics.
| Element | Session 1 | Session 2 |
|---|---|---|
| Format | Selected-response questions | Case-study questions |
| Scored items | 200 | At least 30 |
| Pilot (unscored) items | 30 | Variable allocation; the 2026 handbook table displays 30+ scored and 20+ pilot |
| Time allowed | Four hours | Two hours |
Total testing time is six hours. The handbook describes the full appointment as 410 minutes, which includes the break and non-testing activities such as check-in and tutorials. The handbook labels the overall item total approximately 280. Because the number of pilot items in Session 2 varies, treat that total as approximate rather than fixed. An older 2023 content specification describes 20 unscored case items, but you should not assume a fixed current count.
Rules that affect test-day strategy
- Session 1 cannot be reopened once Session 2 begins. Finish your flagged-question review before you advance.
- No personal reference materials and no personal calculator. An approved calculator is supplied on screen, so practice with the same kind of tool.
- Case-study responses are objectively scored. The essay-style format used before January 2023 is gone, so there is no free-text writing to prepare for.
Where the Points Live: The Eight Reported Categories
The weights below come directly from ARRT's published annual exam reporting. They are whole-exam reporting categories, and they are the right lens for deciding where to spend study hours. For deeper treatment of each, see our complete guide to all eight RRA content areas.
| Category | Weight |
|---|---|
| Case Study | 25% |
| Abdominal Section | 16% |
| Patient Management | 14% |
| Patient Safety, Radiation Protection, and Equipment Operation | 11% |
| Thoracic Section | 9% |
| Musculoskeletal and Endocrine Sections | 9% |
| Neurological, Vascular, and Lymphatic Sections | 9% |
| Pharmacology | 7% |
Selected response contributes 75% of points and case study contributes 25%. Case Study is the largest separately reported weighted category, and Abdominal Section is the largest separately reported procedural category at 16%.
A caution about the 56 / 28 / 116 counts
The 2023 content specification organizes the selected-response objectives under three parent headings: Patient Care (56 scored items), Safety (28), and Procedures (116). These are item counts within selected response, not whole-exam percentage weights, and they do not map one-to-one onto the eight reported categories above. Procedures is the largest selected-response parent category, which is consistent with the heavy weight of the abdominal, thoracic, musculoskeletal, endocrine, neurological, vascular, and lymphatic sections. Use the eight percentages for study allocation and the specification for the detailed objectives within each area.
Case Study (25%)
This is where the exam tests integration rather than recall. Expect clinical scenarios that draw on several of the other categories at once.
- Practice reading a scenario, identifying the decision point, and applying patient management, pharmacology, and imaging-section knowledge together.
- Because responses are objectively scored, precision about the clinically appropriate action matters more than narrative explanation.
Abdominal Section (16%)
The largest procedural category. Candidates should be fluent in the imaging approach to abdominal organs and the procedures an RA may assist with or perform under supervision.
- Build strong anatomy-to-procedure connections, since questions tie the two together.
Patient Management (14%) and Pharmacology (7%)
Together these account for 21% of the exam and reflect the clinical-practice nature of the role. Patient assessment, communication, and medication knowledge are tested as practice skills, not trivia.
Patient Safety, Radiation Protection, and Equipment Operation (11%)
Dose awareness, protective measures, and safe equipment use. This category rewards candidates who already live these principles in radiography practice and need to extend them to RA-level responsibilities.
Scaled Score of 75 and the 2025 Pass Data
Passing the R.R.A. requires a scaled score of 75 on a 1-99 scale. That is not the same as answering 75% of questions correctly. Scaling accounts for differences in difficulty across exam forms, so the raw number of correct answers that corresponds to a scaled 75 can vary. Our passing score guide unpacks this in more detail.
For context on the candidate experience, ARRT's 2025 annual exam report shows a calendar-2025 first-time pass rate of 75.0% among 24 first-time candidates. Two cautions apply. First, a cohort of 24 is small, so year-to-year swings can be large and the figure should not be over-interpreted. Second, the report also shows 37 total administrations, but that number is not the first-time cohort size. It includes repeat attempts. For more on reading these numbers responsibly, see what the data shows on RRA pass rates.
Key Takeaway
Do not aim for "75%." Aim for consistent mastery across all eight categories, with extra depth in Case Study, Abdominal Section, and Patient Management, since those three alone carry 55% of the weighted exam.
Fees, Attempts, and Scheduling Mechanics
| Item | Amount or rule |
|---|---|
| Initial application/examination fee | USD 225 |
| Reapplication fee | USD 200 |
| Annual renewal fee | USD 65 |
| Attempts allowed | Three attempts within three years |
| Delivery | Pearson test centers |
No member versus nonmember price difference is listed for the exam. The ordinary annual renewal fee covers your ARRT credentials as a whole rather than charging a separate fee for each discipline. For the bigger picture, including education costs that dwarf the exam fee, see our full cost breakdown.
Scheduling
ARRT announced an additional October 2026 administration. After October 14, 2026, the next published window is January 13-16, 2027, with an application postmark deadline of November 11, 2026. Because application processing takes time and your documentation (portfolio, ACLS, Radiography registration) must all be in order, treat the postmark deadline as your real target date rather than the testing window. Current windows are tracked in our exam dates guide.
Sequencing Your Preparation Around the Weights
You already have RA program coursework behind you, so this is a consolidation plan, not a learning-from-scratch plan. The sequence below is built around the published weights and the way the exam is structured. For a broader plan, see our RRA study guide and the one-page cheat sheet for last-week review.
Foundations that feed everything
- Patient Management and Pharmacology (21% combined), since these concepts reappear inside case studies.
- Patient Safety, Radiation Protection, and Equipment Operation (11%).
The imaging sections
- Abdominal Section first (16%, the largest procedural category).
- Thoracic, Musculoskeletal and Endocrine, then Neurological, Vascular, and Lymphatic (9% each).
Case-study integration
- Timed scenario practice that mixes categories, mirroring the 25% Case Study weight.
- Practice with an on-screen calculator rather than a handheld one.
Full-length simulation
- Rehearse the two-session structure, including the rule that Session 1 locks once Session 2 starts.
- Review weak categories identified in simulation results.
The logic is simple: foundation categories come first because they are woven into case studies, the largest procedural category gets early attention, and integration practice comes last so that it draws on everything you have reviewed. Adjust the pacing to your own calendar and your application deadline. Targeted question practice on the RRA Exam Prep practice test site can help you identify which categories need extra time.
Maintaining the Credential After You Pass
Earning the R.R.A. starts a maintenance cycle. Annual renewal is normally due by the end of your birth month, and the supporting Radiography credentials must be maintained as well. A lapse in Radiography can jeopardize the R.R.A. even if everything else is in order.
- Biennial continuing education: 50 credits every two years.
- At least 25 Category A+ credits within that total.
- At least 35 RRA-relevant credits within that total.
These requirements overlap rather than stack. A single credit can count toward the 50 total, toward the Category A+ minimum, and toward the RRA-relevant minimum at the same time, so you do not need 110 credits. Plan your CE selections so each course does double or triple duty. All RRA credentials carry a ten-year Continuing Qualifications Requirements (CQR) cycle.
Whether the investment pays off depends on your career goals and market. Our analyses of earnings and return on investment work through that question, and the RRA jobs overview covers where the credential is used.
Frequently Asked Questions
The American Registry of Radiologic Technologists (ARRT) awards the Registered Radiologist Assistant credential, styled R.R.A. The exam is delivered at Pearson test centers.
For program completion on or after January 1, 2023, a master's or doctoral degree is required on the standard route. Earlier degree exceptions are separate and should not be confused with the current requirement. The RPA-to-R.R.A. pathway has its own degree-and-experience combinations.
It is a score of 75 on a 1-99 scale, not 75% of questions answered correctly. Scaling adjusts for difficulty differences between exam forms, so the raw-score equivalent can vary.
You are allowed three attempts within three years. The initial application and examination fee is USD 225, and reapplication costs USD 200.
No. Session 1 cannot be reopened after Session 2 begins, so finish reviewing flagged items before you move on. No personal reference materials or personal calculator are permitted, though an approved calculator is supplied on screen.
If you are weighing the credential, start with the eligibility chain, since it determines your timeline more than the exam itself does. From there, build your preparation around the eight published categories, give Case Study and Abdominal Section the attention their weights deserve, and use realistic practice questions to confirm you are ready for the six-hour format.