NRPP RMP
NRPP Radon Measurement Professional (RMP) Exam
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ExploreAbout this exam
The NRPP Radon Proficiency Program issues the Measurement Professional credential to individuals who perform radon measurement work in buildings. NRPP describes its credentials as indicating "mastery of the specific skills required to successfully complete radon testing and remedial projects," and states that private certification is required by multiple federal and state agencies. NRPP is recognized by the EPA and accredited by the ANSI National Accreditation Board (ANAB) under ANSI/ISO/IEC 17024, and it requires all certified individuals to conduct business in accordance with the applicable ANSI/AARST Standard(s). Certification is maintained through biennial documentation of competence, expertise, and performance. The Measurement Professional Exam is one of several NRPP exams listed alongside mitigation, technician, installer, and SGM compliance inspector exams, with a separate New Jersey license exam. Because NRPP's public exam pages were unavailable at the time of retrieval, this page does not state an item count, time limit, passing score, fee, or retake policy; confirm those details with NRPP directly or in the NRPP Candidate Handbook. Preparation generally combines an initial training course, the NRPP Candidate Study Guides, familiarity with required ANSI/AARST standards, and hands-on practice with devices on the NRPP Approved Device List and approved laboratories.
What you'll study
About NRPP RMP preparation
What does the RMP exam cover?
NRPP does not publish a domain breakdown on its public pages, so no topic weights can be quoted here. Practically, candidates should expect measurement fundamentals, device and protocol knowledge, quality assurance and control, standards and regulations, and reporting. Study the required ANSI/AARST standards and the NRPP Candidate Study Guides, and confirm scope with NRPP.
How many questions are on the exam and how long is it?
The retrieved NRPP pages do not state an item count or time limit, so none is given here. Consult the NRPP Candidate Handbook or contact the NRPP Administrative Office at [email protected] for the current exam blueprint, length, and appointment details before you schedule.
What score do I need to pass, and can I retake it?
Passing scores and retake rules are not published in the source material used for this page, so treat any specific number you see elsewhere as unverified. Ask NRPP directly about the passing standard, waiting periods between attempts, and any additional fee for a retake.
How much does the exam cost?
NRPP announced that effective January 1, 2025, fees for exams, initial certifications, and renewal certifications were updated, but the amounts are not stated on the retrieved pages. Request the current fee schedule from NRPP before registering, and budget separately for training and any device or lab costs.
How long is certification valid?
NRPP states that achieving and maintaining certification requires biennial documentation of competence, expertise, and performance. Plan continuing education and renewal activity across each two-year cycle rather than waiting until the end, and check NRPP's renewal guidance for the specific requirements that apply to your credential.
Do I need training before taking the exam?
NRPP lists initial training courses and exam-prep courses, along with NRPP Candidate Study Guides hosted by AARST. Training is not confirmed here as a mandatory prerequisite for the exam itself, so verify eligibility and sequencing with NRPP. Coursework is still the most efficient way to cover standards and field practice.
What is the most common reason candidates struggle?
Candidates typically lose points on quality assurance and quality control details and on standards compliance rather than on basic physics. Know device placement, deployment and retrieval conditions, duplicate and blank handling, and chain-of-custody expectations. If you work with a device type, read its approved listing and calibration requirements closely.
What study order do you recommend?
Start with the required ANSI/AARST standards so the rules frame everything else, then move to measurement methods and device documentation, then quality assurance and reporting. Finish with practice questions and a review of anything you missed. Confirm which standards NRPP currently requires, since the applicable editions can change.
Is this site affiliated with NRPP?
No. This is an independent study resource and is not affiliated with, endorsed by, or sponsored by NRPP or AARST. NRPP, the NRPP logo, and related marks belong to their owners. Always rely on NRPP's official candidate handbook and standards for authoritative requirements and current fees.