- What ABR-NMP-P2 Actually Means
- Who Administers It and Why That Matters
- Exam Format, Timing, and Question Types
- The Five Domains Behind the Name
- How Part 2 Fits the Certification Pathway
- Fees and Registration Mechanics
- Who Cares About This Credential
- Mapping Domains to a Study Timeline
- Frequently Asked Questions
- ABR-NMP-P2 refers specifically to the American Board of Radiology's Nuclear Medical Physics Part 2 Qualifying Examination.
- The exam covers five domains: Radiation Protection/Ethics, PET & Hybrid, Single Photon Imaging, Radiation Measurements, and Clinical Procedures.
- It runs 130 questions over 4 hours 1 minute of answering time, remotely proctored, closed book.
- Passing Part 2 alone does not confer certification; Parts 1 and 3 are also required.
What ABR-NMP-P2 Actually Means
ABR-NMP-P2 stands for the Nuclear Medical Physics Part 2 Qualifying Examination, one component of the certification process administered by the American Board of Radiology. It is not a standalone license, a job title, or a generic "physics part 2" test - it is a specific, scoped examination within ABR's medical physics certification structure, focused entirely on nuclear medical physics content. If you have landed here searching for what this acronym means, the short answer is: it is the second qualifying exam a candidate takes on the path toward full board certification in the nuclear medical physics specialty.
This article stays deliberately narrow to that definition. For a broader walkthrough of the credential itself, see ABR-NMP-P2 Certification, and for a plain-language explainer of the acronym's origin, see ABR-NMP-P2 Meaning.
Who Administers It and Why That Matters
The American Board of Radiology (ABR) governs the exam end to end - content development, scheduling, remote proctoring, and results reporting. Because ABR is the sole authority, every procedural detail (registration windows, question counts, break rules) comes from ABR's own published materials rather than third-party prep vendors. The current content guide for this exam was updated July 2, 2026, and the associated remote-exam administration guide was revised July 23, 2026. Both documents retain the same five-domain structure referenced throughout this site.
Understanding that ABR alone administers the exam also clarifies a common point of confusion: ABR-NMP-P2 is distinct from certification pathways run by other boards, such as the American Board of Science in Nuclear Medicine (ABSNM). These are separate organizations with separate exams, and candidates should not assume overlapping eligibility rules or fee structures between them.
Exam Format, Timing, and Question Types
ABR-NMP-P2 is a remotely proctored, computer-based examination delivered in a single session through myABR. According to the July 23, 2026 remote-exam guide, the exam consists of 130 questions with 4 hours and 1 minute of answering time. On top of that, candidates receive 20 minutes for a tutorial/practice period and 25 minutes of break allowance, bringing the total allotted seat time to 4 hours 46 minutes.
Most items are multiple-choice, but ABR's preparation materials also describe Drag and Drop image-location items, where a candidate identifies an anatomical site, equipment component, or region on a graph. This format matters for how you practice: static flashcards alone will not prepare you for image-based placement questions tied to instrumentation or anatomy.
- Closed-book format - no scratch paper or personal notes permitted.
- A compliant physical erasable whiteboard is allowed, but it must be wiped clean at the start and end of the session.
- An embedded or ABR-approved handheld calculator is permitted; ABR also supplies a list of constants and physical values, though it does not guarantee the list covers every needed value.
- Starting a break locks your responses to previously viewed questions, including unanswered or flagged ones - plan your pacing accordingly.
- A single active monitor and an external side-view webcam are required for proctoring; ABR staff monitor sessions live and review recordings.
Because remote-exam logistics can trip up otherwise well-prepared candidates, complete the Exam Readiness Check using the exact computer and room you intend to test from. For a deeper breakdown of how difficult the actual content and format feel in practice, see How Hard Is the ABR-NMP-P2 Exam? Complete Difficulty Guide 2026.
Key Takeaway
Practice with image-location and drag-and-drop style questions, not just multiple-choice recall - ABR's own materials confirm this format is part of the exam.
The Five Domains Behind the Name
ABR does not publish percentage weightings for these domains, so no domain should be assumed "bigger" than another based on guesswork. What is confirmed is the domain list itself, taken directly from the official content guide:
Domain 1: Radiation Protection, Safety, Professionalism and Ethics
Covers internal, fetal, and CT dosimetry, occupational and public radiation safety, shielding calculations, and professional ethics scenarios.
- Shielding and dose-limit reasoning under realistic clinical constraints
Domain 2: PET & Hybrid
Includes PET detector physics, acquisition and reconstruction methods, attenuation/random/scatter corrections, quantification, PET/CT integration, quality control, and acceptance/annual testing.
- Correction algorithms and their impact on image quantification
Domain 3: Single Photon Imaging Systems
Scintillation cameras, solid-state cameras, and hybrid systems - including intrinsic/extrinsic performance testing, collimation, digital and dynamic imaging, SPECT, SPECT/CT, and quality control.
- Collimator selection tradeoffs and camera QC troubleshooting
Domain 4: Radiation Measurements
Dose calibrators, well counters, survey meters, and thyroid probes, alongside statistical tools: error propagation, chi-square tests, image statistics, and minimum detectable activity.
- Dead-time correction and detector efficiency calculations
Domain 5: Clinical Procedures
Cardiac, pulmonary, tumor, bone, brain, thyroid, and lymphatic imaging procedures, plus radionuclide therapy and brachytherapy applications.
- Procedure-specific dosing and imaging-protocol reasoning
For an exhaustive walkthrough of each domain with worked examples, see ABR-NMP-P2 Exam Domains 2026: Complete Guide to All 5 Content Areas. A structured study plan built around these domains is covered in ABR-NMP-P2 Study Guide 2026: How to Pass on Your First Attempt.
How Part 2 Fits the Certification Pathway
A frequent misunderstanding is treating "passing Part 2" as equivalent to "becoming certified." It is not. Standard eligibility for Part 2 requires having already passed both the General and Clinical sections of Part 1, and either completing or being on track to complete a CAMPEP-accredited residency or Doctor of Medical Physics program by August 31 of the exam year. Residency must begin within 10 years of passing Part 1, and board eligibility itself lasts six full calendar years from residency completion or Part 2 approval - whichever comes first.
Already-certified medical physicists pursuing an additional specialty follow a different route: ABR-approved prospective, supervised clinical training while maintaining their existing certification.
Passing Part 2 is a qualifying step, not the finish line - full initial certification requires Parts 1, 2, and 3 together. Results are criterion-referenced (pass/fail against a fixed standard, not a curve against other candidates) and typically post in myABR with email notification about a month after the test date. Full eligibility mechanics are detailed in ABR-NMP-P2 Requirements 2026: Eligibility, Prerequisites & How to Qualify, and exact passing-standard mechanics are covered in ABR-NMP-P2 Passing Score 2026: Exactly What You Need to Pass.
Fees and Registration Mechanics
The Part 2 examination fee is USD 640, due at registration. This is separate from the standard initial medical physics certification application fee of USD 250, which is a distinct pathway charge. If a first attempt is unsuccessful, ABR lists a one-time USD 250 re-examination fee applicable to Part 1 and/or Part 2. All fees are nonrefundable, though prepaid exam fees tied to a cancellation or nonattendance carry forward to the next available exam date.
| Charge | Amount | When It Applies |
|---|---|---|
| Part 2 exam fee | USD 640 | Due at registration |
| Initial certification application fee | USD 250 | Separate pathway charge |
| Re-examination fee (Part 1 and/or Part 2) | USD 250 | One-time, after a first-attempt failure |
For the current cycle, ABR's certification page lists the 2027 Part 2 application window opening the first business day in February and closing March 31, 2027. Approved applicants are invited to register in May 2027, with the published exam date of August 11, 2027. Full breakdowns of every associated cost live in ABR-NMP-P2 Certification Cost 2026: Complete Pricing Breakdown, and the exact registration calendar is covered in ABR-NMP-P2 Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Who Cares About This Credential
Because ABR-NMP-P2 is a qualifying step toward full nuclear medical physics board certification, the audiences who track it are primarily hospital nuclear medicine departments, academic medical centers with CAMPEP-accredited residency programs, and clinical physics groups that staff PET, SPECT, and radionuclide therapy services. Employers hiring for nuclear medical physicist roles typically look at where a candidate stands in the Part 1 → Part 2 → Part 3 sequence when evaluating readiness for independent clinical responsibilities.
If you're researching how this credential translates into job opportunities or compensation, treat salary figures cautiously - AAPM survey data covers medical physicists broadly and should not be confused with nuclear medicine technologist pay or presented as a guaranteed certification-driven raise. See ABR-NMP-P2 Salary Guide 2026: Complete Earnings Analysis and ABR-NMP-P2 Jobs for more context, and Is the ABR-NMP-P2 Certification Worth It? Complete ROI Analysis 2026 for a broader cost-benefit view.
Mapping Domains to a Study Timeline
Rather than generic study advice, the most efficient approach is sequencing your review around the five domains and the exam's actual question style. Since Drag and Drop items test spatial/visual recognition (equipment components, anatomical regions, graph reading), leave dedicated time for image-based practice rather than pure recall review.
Radiation Measurements & Protection (Domains 1 & 4)
- Drill dead-time correction, MDA, and chi-square statistics calculations
- Review shielding and internal/CT dosimetry scenarios
Imaging Systems (Domains 2 & 3)
- Practice PET correction-algorithm and SPECT/CT quality-control questions
- Work through camera and collimator troubleshooting scenarios
Clinical Procedures (Domain 5)
- Review cardiac, thyroid, brain, and therapy procedure protocols
- Connect dosimetry and instrumentation knowledge to clinical decision-making
Integrated Practice
- Full-length timed practice sessions mimicking the 4-hour-1-minute answering window
- Mixed image-location and calculation questions across all five domains
For a condensed reference you can review the week before test day, see ABR-NMP-P2 Cheat Sheet 2026: One-Page Review of Must-Know Facts. To build and rehearse full-length timed sets against these exact domains, the practice platform on the main site mirrors this five-domain structure.
Key Takeaway
Sequence review by domain difficulty and calculation density first (Domains 1 and 4), then move to imaging systems and clinical procedures before full timed rehearsal.
Frequently Asked Questions
No. It refers only to the Nuclear Medical Physics Part 2 Qualifying Examination administered by the American Board of Radiology - a step in the certification process, not a standalone license or job title.
No. Full initial certification in medical physics requires passing Parts 1, 2, and 3. Part 2 alone is a qualifying exam within that sequence.
The exam has 130 questions with 4 hours 1 minute of answering time, plus a 20-minute tutorial and 25 minutes of break allowance, for a total allotted time of 4 hours 46 minutes.
The Part 2 exam fee is USD 640, due at registration, separate from the USD 250 initial certification application fee. A one-time USD 250 re-examination fee applies after a failed first attempt.
ABR does not publish domain percentage weightings for this exam, so no domain should be assumed to carry more questions than another. The five domains are simply listed in the order used by the official content guide.