I struggled initially with Radiation Biology concepts, especially the long-term effects of radiation. The Prephow practice test simulated the actual exam environment perfectly. It ensured I was solid on all aspects of Patient Exposure to Radiation and the ALARA principle. Passing the first time was all thanks to this prep!
Radiation Health and Safety Practice Test
Your Proven Shortcut to Radiation Health and Safety (RHS) Success
Get exam-style questions, detailed explanations, and realistic timing to master the latest Dental Assisting National Board (DANB). Prepare Radiation Health and Safety practice test then walk into your Medical Technology exam with confidence.
"Join thousands who passed their test by practicing with Radiation Health and Safety (RHS) exam questions just like the real thing."
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How Our Practice Exam Works?
Study wherever, whenever with these quiz practice questions for Radiation Health and Safety:
Pick a Mode
You can choose Study Mode for course preparation and Exam Mode (timed 90-minute) for simulation.
Realistic Mix
Radiation Health and Safety exam questions reflect both multiple-choice and scenario/performance-style prompts aligned to exam objectives.
Detailed Explanations
Every question includes a clear explanation, so you know why an answer is correct.
Domain Analytics
See strengths/weaknesses by the domains & sub-topics to focus your revision.
Reattempts
Retake Radiation Health and Safety (RHS) practice exam to improve your speed and accuracy; watch your score trend toward the benchmark.
Exam Simulator
Get a feel for the real exam with our Dental Assisting National Board (DANB) practice test.
Why Choose PrepHOW for Radiation Health and Safety Practice Questions
Train the way you'll be tested. With the most clinically accurate, expertly written question bank, you’ll build the speed, accuracy, and confidence needed to pass the Radiation Health and Safety (RHS) on your first attempt.
- 1. Practice & Exam modes to switch between learning and testing
- 2. Detailed answer explanations for every question
- 3. Instant scoring & feedback to show what you missed and why
- 4. Smart dashboard to track strengths, weaknesses, and progress
- 5. Study anywhere with mobile-friendly design
- 6. Updated Radiation Health and Safety questions bank to match the latest exam changes
- 7. Free practice test to start - no credit card required
Real Exam Feel
Mock Exam/Study modes, question flagging, and instant or end-of-exam feedback.
Smarter Analytics, Faster Improvement
Trend charts so you can see when you're consistently above the passing scrore.
Quality You Can Trust
Clear, teach-back explanations with why the correct answer is right and why others aren't.
Frequently Asked Questions
What is the Radiation Health and Safety (RHS) exam?
The Radiation Health and Safety (RHS) exam is a national board examination administered by the Dental Assisting National Board (DANB). It measures a candidate's knowledge of dental radiation safety, compliance, and proper imaging techniques. Passing this exam is often a requirement for dental assistants to legally take x-rays in many states.
How many questions are on the RHS exam?
The exam consists of 75 scored multiple-choice questions. However, you may see up to 80 questions total; the additional 5 are likely "pretest" questions that are not scored but are being tested for future exams.
What is the time limit for the exam?
Candidates are given 60 minutes (1 hour) to complete the exam. There are no scheduled breaks during this time.
What topics are covered on the RHS exam?
The exam covers three main domains:
- Purpose and Technique (50%): Anatomical landmarks, image receptors, and exposure techniques.
- Radiation Protection (25%): Protecting patients and operators from x-ray exposure.
- Infection Prevention and Control (25%): Preventing cross-contamination during radiographic procedures.
How do I apply for the exam?
You can apply online through the DANB website or by mailing a paper application. Once your application is processed and approved, you will receive a "Test Admission Notice" with instructions on how to schedule your exam.
What happens if I fail the exam?
If you do not pass, you can reapply to take the exam again. There is no waiting period to reapply, but you must pay the exam fee again. Some candidates may be eligible for a slight discount on retakes depending on current DANB policies.
Does the RHS certification expire?
Yes, If you pass the RHS exam, you will receive a certificate that must be renewed annually. Renewal involves paying a fee and completing a specific number of Continuing Dental Education (CDE) credits (usually 12 credits per year).
How should I study for the RHS exam?
Most candidates use the DALE Foundation review courses, study guides, and Prephow Radiation Health and Safety practice questions. Focusing on the official exam outline (blueprints) is the most effective strategy.
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Discover how our Radiation Health and Safety practice tests have empowered countless students to pass their exams with ease.
Bria Marsh
Bo Benton
I needed to brush up on Purpose and Maintenance of Radiographic Equipment and the practical application of the Inverse Square Law. The questions were challenging but fair, mirroring the real RHS difficulty. After focusing on the areas Prephow highlighted, I felt completely prepared for the official test. Worth every penny!