Radiation Health and Safety (RHS) Exam

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DANB Radiation Health and Safety Exam RHS

DANB’s RHS exam is a component exam of the NELDA and CDA certifications. There are no eligibility requirements for taking the RHS exam, so you can apply at any time.

Exam Options: Test Center or Online Proctoring

This DANB exam can be taken in-person at Pearson VUE testing centers or through online proctoring. Learn more about these two options and which one is right for you. 

Download the test center vs online proctoring guide (PDF)

Read about test center operations and conditions 

Online Proctoring – What You Need to Know

Important! Before you apply for an online proctored exam, please view the system requirements, install OnVUE, and run a system check to ensure your computer meets the requirements.  

Install OnVUE and run the system check 

Apply Now

You will need to create an online account or login to your existing account to proceed with your exam application.

View the steps to apply for an online proctored exam (PDF)

View the steps to schedule, reschedule, cancel or start an online proctored exam (PDF)


Additional Information

Download the application packet to view exam fees, testing time, and the number of questions on the exam. The application packet can be used if you would like to submit your application via mail or fax (test center exam option only). If you are under 18, you will also need to submit the Parent/Guardian Consent form.

RHS Application Packet (PDF)

Parent/Guardian Consent Form (PDF) 

DANB RHS Study Materials

DANB’s RHS Exam Outline lists the topics covered on DANB’s RHS exam. You can use the outline to help create your study plan.

RHS Exam Outline

DALE Foundation Review Courses

The DALE Foundation, the official DANB affiliate, offers review courses and practice tests to prepare for the DANB RHS exam.

DANB RHS Practice Test
DANB RHS Review course

Candidate Handbook

The Candidate Handbook contains important policy information for DANB's national certification programs and exams.

View the Candidate Handbook