RPA Passing Score 2026: Exactly What You Need to Pass

What "75" Actually Means on the Radiology Practitioner Assistant Exam

Candidates preparing for the initial Radiology Practitioner Assistant (RPA) examination, administered under the Certification Board for Radiology Practitioner Assistants (CBRPA), often ask one question first: how many of the 200 questions do I need to get right? The honest answer is that the published passing standard is a scaled passing score of 75, and a scaled score is not the same thing as 75% correct.

A scaled score is a reporting scale. Raw performance (the number of items you answered correctly) is converted onto a common scale so that results mean the same thing even if the difficulty of one set of questions differs slightly from another. When a credentialing body publishes a scaled passing score, the number printed on your result is not a simple percentage of 200. That is why you will not find a trustworthy "you need exactly X correct answers" figure in the published materials, and why you should be skeptical of any site that states one.

For a deeper look at how candidates experience the difficulty of the test, see our guide on how hard the RPA exam is. If you are specifically hunting for historical pass-rate data, our RPA pass rate analysis explains what can and cannot be said responsibly about outcomes.

The Exam Behind the Score: Format and Rules

The score is only meaningful in the context of the delivery conditions. Here is what the published materials establish for the initial Radiology Practitioner Assistant examination:

Do the pacing arithmetic early. Three and a half hours across 200 items leaves roughly a minute and three-quarters per question on average, but the image-based cases will not take the same time as a recall question about a contrast agent. Candidates who rehearse only fast recall tend to be surprised when a case set demands careful image interpretation. Build a pacing habit where you bank time on straightforward items so that image-heavy sets don't squeeze you.

Off-site proctoring and the cost trap

If you test at an approved off-site college or university, the published off-site charge is USD 200 in addition to the examination fee. Read that carefully: it covers four billed proctor hours, which is not the same as four hours of written-exam time. Your exam window is 3 hours 30 minutes; the proctor-hour figure is a billing unit that gives the institution time for check-in, ID verification and logistics. Plan your arrival, ID check and any institutional scheduling accordingly. Our RPA certification cost breakdown walks through how these charges stack up.

Where Your Points Come From: The Ten Content Components

The CBRPA content specifications publish how many questions fall under each of ten content components. These are counts of items, and no official percentage weights are presented, so treat any "domain percentage" you see elsewhere as someone's own arithmetic rather than an issuer-published weight. In listed order, the counts are 6, 25, 10, 20, 75, 40, 8, 8, 4 and 4, which total 200.

Two published specification documents agree on these summary-table figures. One note on labels: the detailed-section headings in the specifications differ slightly from the summary-table names for components 1, 7, 9 and 10, so the summary-table names above are the ones to anchor on. Our complete guide to all 10 RPA content areas covers each component in more depth.

The mid-sized blocks that quietly decide close results

Patient Assessment and Management (25) and Pharmacology and Contrast (20) are not the biggest components, but they are the practical clinical backbone of the role. They also tend to reward systematic review, because contrast reactions, patient screening and management decisions follow learnable logic. Because scaled scoring means you cannot calculate a safe margin, shoring up these mid-sized blocks is a sensible way to protect yourself against an uneven performance on the large anatomy and image-evaluation component.

Image-Based Cases and Why They Matter to Your Score

Twenty percent of the questions use image-based actual cases, and the content specifications identify nine case studies. On a 200-item test, that is a substantial slice of the score tied to a format that rewards practice with real images rather than memorized text.

What to do about it:

1. Practice reading images in context. Pair each image with the clinical question it implies, not just the label.
2. Link pathophysiology to appearance. The exam blends Component 5's pathophysiology and image evaluation, so study them together.
3. Time yourself on case sets. Image items consume more of your 3 hours 30 minutes than pure recall items.

Practicing with realistic question formats helps here. You can work through exam-style items on our RPA practice test site to get comfortable with the multiple-choice delivery before test day.

Don't Confuse This With the Recertification Score

This is the single most common source of confusion around the passing score, so it deserves its own section. CBRPA publishes a separate ten-year recertification examination. Its published specifications are entirely different from the initial exam:

None of the recertification specifications describes the initial examination. If you see "75% raw score" or "open book" in a source, check whether it is describing recertification. For the initial exam, the number is a scaled 75, and the test is closed-book with books and personal calculators prohibited. If you want to understand how annual renewal and credential maintenance fit around all of this, our pricing breakdown also covers the recurring costs.

If You Miss 75: Retest Mechanics and Costs

The Candidate Handbook lists a USD 200 retest application charge. That figure is the retest application charge only; it is not the initial exam fee, and it should not be assumed to include off-site proctoring if you test away from Weber State University. If your retest is also at an off-site institution, the separate USD 200 proctor charge, covering four billed proctor hours, is a distinct cost.

The practical takeaway is financial and strategic: a retest adds a visible cost on top of the effort of re-preparing, so a disciplined first attempt is worth the investment. Use a full-length practice session to confirm you can sustain focus across 200 items and 3 hours 30 minutes before you sit for the real thing. You can also read our broader ROI analysis of RPA certification if you are weighing the total investment against the career outcome.

Before You Aim at the Score: Confirm You Can Sit

A passing score is irrelevant if you are not yet eligible to test. Published eligibility elements include active ARRT radiographer status, a CBRPA-recognized academic program with a baccalaureate requirement, radiologist-supervised clinical competencies and current ACLS. Candidates who have completed the professional curriculum may test within six months before baccalaureate completion, with results held until degree completion.

Weighting Your Prep Toward the Score

Because the exam's structure is published down to the item count per component, the one study-planning idea that is genuinely RPA-specific is to let those counts drive your calendar. Here is an illustrative sequence, shaped by the item counts rather than by generic habit:

For a fuller approach to building your plan, see our RPA study guide, and keep our one-page RPA cheat sheet handy for last-week review. When you are ready to test your readiness against exam-style questions, head to the RPA Exam Prep practice tests.

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