The SurePass Guarantee — your money back if you don't pass, and Lifetime covers your $270 retake fee. SurePass Guarantee — money back if you don't pass + $270 retake fee on Lifetime.
RHS prep
From $79
RHS · Radiation Health and Safety
Pass the RHS — or get every dollar back. Guaranteed.
Don't pass? Full refund — and Lifetime pays your $270 retake fee
Know exactly what to study, when to study it, and the moment you're ready to sit.
Enter your email — we instantly send a link to your cheat sheet. One tap opens your study portal with your trial; a 6-digit code comes as a backup. No card.
- 600 exam-style questions, every one with a written explanation
- Free cheat sheet + 24 hours of the full Fast Track Study System on your trial
- A readiness score that tells you when you're actually ready to sit
- Works offline — study anywhere, no signal needed
What’s free on your trial
Your RHS cheat sheet — free, instant to download.
Instant access to download the full cheat sheet. Start your free trial — one tap on the emailed link opens your study portal with the sheet waiting, plus 24 hours of the full Fast Track Study System. No card.
You'll get further in these 24 hours than in a week anywhere else.
- Your RHS cheat sheet — the highest-yield facts as a PDF, instant to download with your trial
- The full Fast Track Study System, open for 24 hours from the moment you start
- Every practice question — Tutor, Timed and Quiz modes — with Miles, the AI tutor
- Every flashcard deck and a full-length mock exam, with narrated audio
- The whole study guide, plus your readiness meter and study plan paced to your exam date
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
Pass the RHS — or get your money back.
- Every pass: full refund — and you keep Lifetime access, free.
- Lifetime (SurePass Pro): we also pay your $270 DANB retake fee.
RHS cheat sheet, instant downloadNo payment info required
What you get with each RHS pass
Every pass includes the full study system. Only the length of access and the guarantee payout change.
Lowest price
7-Day Pass
one-time · 7 days of access
Less than the DANB retake fee ($270)
Cram-ready full access for the final week before your exam.
Click any feature to see it.
- Full refund if you don't pass
- Keep full access, free, until you do
One payment · no subscription · secure checkout by Stripe
Strong guarantee
30-Day Pass
one-time · 30 days of access
Less than the DANB retake fee ($270)
A full month to prep — backed by our pass guarantee.
Click any feature to see it.
- Full refund if you don't pass
- Keep full access, free, until you do
One payment · no subscription · secure checkout by Stripe
Best guarantee
Lifetime
one-time · never expires
Less than the DANB retake fee ($270)
Study at your pace, forever — backed by our pass guarantee.
Click any feature to see it.
- Full refund if you don't pass
- We pay your full $270 retake fee — one funded retake
One payment · no subscription · secure checkout by Stripe
- Instant access
- Full study system on trial
Don't pass? Full refund. On Lifetime, your retake fee is covered too. Terms apply
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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Prices and features verified on each company's own site in August 2026; their terms may have changed since, so check before you buy. Exam Edge's price cell is left blank rather than guessed — their site was not readable to us at the time and we would rather show nothing than a number we cannot stand behind. DANB's CHT and BONENT's credentials are different exams; products aimed at those are excluded. DANB publishes no pass rate for the RHS.
Questions about our RHS prep?
Ask a real person.
Ask about the RHS guarantee, the free trial, or how the study system works. We read every message and answer as soon as we can.
Send us a message
Questions, answered
What do I get for free?
The full Fast Track Study System, free for 24 hours with no card — every practice question, every flashcard deck, Cram Mode, Focus sessions, narrated audio, a full-length mock exam sat as timed practice, your own flashcards from any highlight, and the entire study guide, every chapter readable and highlightable. Instant access to download the full cheat sheet. Your cheat sheet always stays yours. A pass keeps all of it open, backed by 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 Lifetime 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 each week?
Because we honor them. Every guarantee is a real financial commitment, so we cap how many are live in a given week and the counter you see is a count of genuine commitments — purchases and held checkouts — never a display number. If a week sells out, yours activates the following Monday.
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 the 7-Day Pass, 48 hours on the 30-Day Pass, or 72 hours on Lifetime, 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?
Work backwards from your exam date. Under a week out, the 7-Day gives you everything for the final push. Sitting within the month, the 30-Day is the honest fit. If your date is further out, Lifetime costs less than two 30-Day passes, never expires, and matters more here than on most exams because RHS recertifies.
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 Lifetime never expires.
Still deciding?
Start your free trial — instant access to download the RHS cheat sheet, plus 24 hours of the full Fast Track Study System. No payment info required.