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RHS · Radiation Health and Safety
Pass the RHS — or get every dollar back. Guaranteed.
Don't pass? Standard refunds you — and SurePass pays your $270 retake fee
Know exactly what to study, when to study it, and the moment you're ready to sit.
From $79 · Starter, Standard or SurePass
- 600 exam-style questions, every one with a written explanation
- Every flashcard deck on spaced repetition — what you miss comes back sooner
- A readiness score that tells you when you're actually ready to sit
- Works offline — study anywhere, no signal needed
What’s inside your study portal
The full RHS Fast Track Study System.
One system, paced to your exam date. Every practice question, every flashcard deck, full-length mocks, narrated audio, Miles the AI tutor and the whole study guide — every pass opens all of it; Standard carries the Money-Back Guarantee and SurePass the SurePass Guarantee.
- Every practice question — Tutor, Timed and Quiz modes — and every flashcard deck
- Full-length mock exams, narrated audio on every chapter, and Miles, the AI tutor
- Your RHS cheat sheet — the highest-yield facts as a PDF, instant to download
- The whole study guide — every chapter, not a preview — as the depth behind the questions
- Your readiness meter and study plan, paced to your exam date, on every device
The Capital Prep Method
What to study, when to study it & the exact moment you're ready.
Cut out the months of studying you don't need. RHS prep that adapts every day — no guessing what to do next.
SurePass readiness
A readiness score built from your own answers — not a progress bar. It moves as you answer, and recent work counts most.
Anywhere Mode · Study from your pocket
Ten minutes of scrolling — or ten minutes closer to passing.
Your phone is already in your hand. Two taps, no signal needed.
- Quick Ten — One tap. Ten questions, with the rationale on every one.
- It downloads itself — No button, no setup, nothing to remember.
- No bars? Still works — Airplane mode, the subway, a cabin in the woods.
- Nothing gets lost. Ever. — Saves as you tap, syncs when you're back.
Flashcards and practice questions work offline. The study guide, audio and full-length mocks need a connection.
Flashcards that work offline
Before you decide how to study
Nearly 1 in 3fail the RHS exam
DANB has published this every year since 2019, and FY2024 was harder still.
Source: DANB’s own published certification statistics (2025 DANB Exam Pass Rates Report).
That is exactly why we guarantee it.
Pass the RHS — or get your money back.
- Standard and SurePass: full refund if you don't pass — plus 90 more days of access on Standard, another year on SurePass, free.
- SurePass: we also pay your $270 DANB retake fee.
- Starter: no refund — don't pass, and you get 30 more days of access, free.
From $79 · Starter, Standard or SurePass
What you get with each RHS pass
Every pass includes the full study system. Only the length of access and the guarantee change.
Starter
7-day sprint
7 days of access
One-time payment
Less than the DANB retake fee ($270)
No money back — upload your score report and we add the days.
- Money back
- Retake fee paid
- 30 more days free if you don't pass
One payment · no subscription · secure checkout by Stripe
See all study materials included
Click any feature to see it.
Standard
A month of study
30 days of access
One-time payment
Less than the DANB retake fee ($270)
Don't pass? Full refund — and 90 more days of access, free.
- Money back
- Retake fee paid
- 90 more days free if you don't pass
One payment · no subscription · secure checkout by Stripe
See all study materials included
Click any feature to see it.
SurePass
The guarantee
1 year of access
One-time payment
Less than the DANB retake fee ($270)
Don't pass? Full refund, your $270 retake fee paid — and another year of access, free.
- Money back
- Retake fee paid
- Another year free if you don't pass
One payment · no subscription · secure checkout by Stripe
See all study materials included
Click any feature to see it.
- Instant access
- Full study system with every pass
Don't pass? Standard refunds you. SurePass also pays your retake fee. Terms apply
Questions before you choose? Ask an advisor →
RHS · Features and Pricing
How Capital Prep compares
Tap any i to learn more about a feature.
| Click an i to learn more | Capital Prep | DALE Foundation | Mometrix | Exam Edge |
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Competitor prices read Aug 2026 — check before you buy. Trademarks are their owners'; Capital Prep is not affiliated with or endorsed by DANB.
Worried about how you'll do on the RHS?
Talk to an advisor.
Ask about the guarantee, which pass fits, or how the study system works. We read every message and reply within a few hours.
We'll reply by email within a few hours.or chat with us now
Questions, answered
What's inside the study portal?
The full Fast Track Study System — every practice question, every flashcard deck, full-length mock exams, narrated audio, Miles the AI tutor, and the entire study guide, every chapter readable and highlightable. The cheat sheet — the highest-yield facts as a PDF — is in the study portal on every pass, with instant access to download it. Every pass opens all of it; Standard carries the Money-Back Guarantee and SurePass the SurePass Guarantee.
What score do I need to pass?
DANB reports a scaled score, not a percentage: you need 400 on a 100–900 scale, and they state plainly it is "neither a number correct nor a percent correct score". The exam is also computer-adaptive, so the questions adjust to you as you go. Our mocks are linear, and our own guarantee bar is 80% on them — that is our number, not DANB's.
How long is the exam?
75 multiple-choice questions in 60 minutes, per DANB's own exam outline. Our full-length mocks match that exactly.
Does it work on my phone?
Yes, and offline. Your due flashcards and a set of practice questions download automatically, so you can revise with no signal. The whole study guide downloads too, narrated audio included; scored mocks and the tutor need a connection.
What happens if I don't pass?
If you qualify under the SurePass terms, we refund what you paid — and on SurePass we also pay your full $270 retake fee. DANB charges the full fee again for a retake; there is no reduced-retake discount, despite what some sites claim.
Are the questions like the real exam?
Every item is written to DANB's own exam outline, weighted domain by domain, with four options and a rationale on each. Every key was recomputed from its own stem before the explanation was read. What we will not do is claim a number we have not measured — where we have run a construction audit we publish it, and where we have not, we say so.
My exam date moved. Does the plan adjust?
Yes. Change the date and the Game Plan rebuilds around the new one — it works backwards from your date, so a move forward compresses it and a move back spreads it out. Nothing is lost.
Why are SurePass guarantees limited?
Because we honor them. Every guarantee is a real financial commitment we may genuinely pay out, so a limited number opens for this exam each day. The allocation resets at midnight in your own time zone, and the counter shows how many of today's are still open.
How many full-length mocks do I get?
Three forms, and four scored sittings across them. Practice questions and timed practice are unlimited on top and always have been.
Do you offer refunds if I change my mind?
Yes, separately from the pass guarantee: 24 hours on Starter, 48 hours on Standard, or 72 hours on SurePass, measured from your purchase (or from your upgrade, if you upgraded) — no questions asked, as long as you haven't sat your exam yet. EEA and UK buyers also keep their 14-day statutory right. The SurePass Guarantee is the other promise — that one is about your exam result, not about changing your mind.
Which pass should I buy?
SurePass, for almost everyone: today it costs the same as Standard, it runs a full year, and it is the only pass that pays your retake fee if you don't pass (and adds another year free). Standard is a month of access with the Money-Back Guarantee — a refund plus 90 more days if you don't pass. Starter is one week of access with no refund — don't pass and you get 30 more days free.
What happens when my pass expires?
Your account stays; the paid features stop. Your notes, highlights and flashcard history are all still there if you come back, and SurePass runs a full year — and adds another year free if you don't pass.
Have questions or concerns?
A real person reads every message and replies by email.
Ready to start?
Standard and SurePass carry the RHS guarantee — SurePass pays your retake fee too. Pick yours and keep the whole system open.
From $79 · Starter, Standard or SurePass