- Breaking Down the Acronym
- Who Administers It and What It Actually Tests
- The Five Domains Behind the Name
- What "Qualifying Examination" Means in Practice
- Registration, Fees, and Eligibility Mechanics
- Where This Fits in the Certification Pathway
- Who Hires Candidates With This Credential
- Building a Study Plan Around the Name
- 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 named domains, from radiation protection to clinical nuclear medicine procedures.
- It is a remotely proctored, single-session exam with 130 questions and 4 hours 1 minute of answering time.
- Passing Part 2 alone does not confer board certification; Parts 1 and 3 are also required.
Breaking Down the Acronym
"ABR-NMP-P2" is a shorthand identifier used on this site for one specific credential: the American Board of Radiology's Nuclear Medical Physics Part 2 Qualifying Examination. Each segment maps directly to a real component of that exam. "ABR" is the certifying organization, the American Board of Radiology. "NMP" points to the Nuclear Medical Physics specialty track within ABR's broader medical physics certification structure. "P2" identifies this as the second of the multi-part qualifying sequence that candidates must pass on their way toward full board certification.
It's worth being precise here because several credentials in adjacent fields use similar-looking abbreviations. On this site, and in this article, ABR-NMP-P2 means exactly one thing: the ABR's Nuclear Medical Physics Part 2 exam, governed entirely by ABR's own published content guides and administrative rules. If you're researching this credential elsewhere and see different fees, different dates, or different domain structures attached to a similarly named acronym, you are very likely looking at a different organization's exam. Our What Is ABR-NMP-P2? and ABR-NMP-P2 Meaning articles go deeper into disambiguating the term if you want additional context before diving into exam mechanics.
Who Administers It and What It Actually Tests
The American Board of Radiology administers ABR-NMP-P2 as a remotely proctored, computer-based examination. It sits within ABR's medical physics certification track and is scoped exclusively to nuclear medical physics content - it does not test general diagnostic imaging physics, therapy physics, or other ABR specialty content outside the nuclear medicine domain.
The exam is built from ABR's official Nuclear Medical Physics Part 2 Content Guide, which lays out five domain headings in a fixed source order. ABR has not published percentage weightings for these domains, so candidates should treat every domain as fair game rather than assuming any single area dominates the question count. If you want a full breakdown of what each domain covers and how to sequence your review, see the ABR-NMP-P2 Exam Domains 2026: Complete Guide to All 5 Content Areas.
The Five Domains Behind the Name
Understanding what "NMP" actually covers requires looking at the five domains that define the content guide. These are the exact areas ABR draws questions from, and mastering all five - not just the ones that feel intuitive - is the difference between a confident pass and a stressful retake.
Domain 1: Radiation Protection, Safety, Professionalism and Ethics
Covers internal, fetal, and CT dosimetry alongside occupational and public safety, shielding calculations, and professional ethics scenarios.
- Dose estimation methods for internal emitters and fetal exposure
- Shielding design principles for nuclear medicine facilities
Domain 2: PET & Hybrid
Focuses on PET detector physics, image acquisition and reconstruction, and the correction techniques that keep quantification accurate.
- Attenuation, random, and scatter correction methods
- PET/CT quality control and acceptance/annual testing protocols
Domain 3: Single Photon Imaging Systems
Includes scintillation cameras, solid-state cameras, and hybrid systems, with emphasis on performance testing and collimation.
- Intrinsic and extrinsic performance evaluation
- SPECT and SPECT/CT quality control workflows
Domain 4: Radiation Measurements
Covers dose calibrators, well counters, survey meters, and thyroid probes, plus the statistical tools used to interpret measurement data.
- Detector efficiency, dead time, and calibration procedures
- Chi-square tests, error propagation, and minimum detectable activity
Domain 5: Clinical Procedures
Applies physics knowledge to real clinical contexts across multiple organ systems and therapeutic applications.
- Cardiac, pulmonary, tumor, bone, brain, and thyroid imaging procedures
- Radionuclide therapy and brachytherapy physics considerations
Key Takeaway
Because ABR publishes no domain-by-domain percentage weighting, don't skip Domain 4's statistical content or Domain 1's ethics material just because they feel less "exciting" than PET or SPECT physics - any of the five can appear with equal legitimacy.
What "Qualifying Examination" Means in Practice
The "qualifying examination" language in the name reflects a specific administrative format. ABR-NMP-P2 is delivered in one remote session through ABR's proctoring system, with registration handled through myABR. According to the 2026 remote exam guide, the session includes 130 questions and 4 hours 1 minute of answering time, plus 20 minutes for a tutorial/practice period and 25 minutes of allowable break time - 4 hours 46 minutes allotted in total.
Most questions are multiple-choice, though ABR's preparation materials also describe image-location items presented in a drag-and-drop format, where candidates identify an anatomical site, an equipment component, or a specific region on a graph. This blended format means candidates need both conceptual recall and the ability to interpret images and waveforms under time pressure.
Breaks come with a catch worth planning around: starting a break locks your responses to any previously viewed questions, including ones left unanswered or flagged, and using more than the allotted break time reduces your remaining answering time. Completing the Exam Readiness Check on your actual testing computer and location beforehand is essential to avoid last-minute technical surprises. For a deeper walkthrough of how the clock, tutorial, and break structure interact, our How Hard Is the ABR-NMP-P2 Exam? Complete Difficulty Guide 2026 article covers the logistics in more detail.
Registration, Fees, and Eligibility 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 covers the broader application pathway rather than the Part 2 sitting itself. If a first attempt is unsuccessful, ABR lists a one-time USD 250 re-examination fee for Part 1 and/or Part 2. All fees are nonrefundable, though prepaid fees following a cancellation or no-show are applied toward the next available exam date rather than lost outright.
Eligibility for Part 2 requires having passed both the General and Clinical sections of Part 1, along with completing - or being clearly 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 runs for six full calendar years from either residency completion or Part 2 approval, whichever happens first. Already-certified medical physicists pursuing an additional specialty follow a separate ABR-approved supervised clinical training pathway while keeping their existing certification active.
For the 2027 cycle, ABR's certification page lists the Part 2 application window opening the first business day in February and closing March 31, 2027, with approved applicants invited to register in May 2027 and the exam date set for August 11, 2027. If you're mapping out your timeline, the ABR-NMP-P2 Requirements 2026: Eligibility, Prerequisites & How to Qualify guide walks through each eligibility criterion in sequence, and our ABR-NMP-P2 Certification Cost 2026: Complete Pricing Breakdown article itemizes every fee a candidate is likely to encounter across the full pathway.
| Item | Detail |
|---|---|
| Governing body | American Board of Radiology |
| Part 2 exam fee | USD 640 |
| Initial certification application fee | USD 250 (separate pathway charge) |
| Re-examination fee after first-attempt failure | USD 250 (one-time, Part 1 and/or Part 2) |
| Question count | 130 questions |
| Answering time | 4 hours 1 minute |
| Total allotted time | 4 hours 46 minutes (includes tutorial and breaks) |
Where This Fits in the Certification Pathway
It's important to understand what passing ABR-NMP-P2 does and does not accomplish. Passing Part 2 alone does not confer board certification. ABR's full initial-certification pathway for medical physics requires passing Parts 1, 2, and 3 in sequence. Part 2 is a qualifying step - it confirms readiness on the nuclear medical physics content areas described above - but the credential most people mean when they say "board certified medical physicist" only arrives after all three parts are complete.
Results are scored on a criterion-referenced basis against an established passing standard, not on a curve relative to other candidates in the same sitting. A failed attempt requires retaking the entire Part 2 exam rather than just the missed sections. Results are typically posted in myABR with an email notification about a month after the test date. If you're trying to understand exactly what score threshold you need to clear, the ABR-NMP-P2 Passing Score 2026: Exactly What You Need to Pass article explains the criterion-referenced model in plain terms, and our ABR-NMP-P2 Pass Rate 2026: What the Data Shows piece explains why publicly available ABR pass-rate figures represent all medical physics specialties combined, not a Nuclear Medical Physics-specific number.
Key Takeaway
Don't confuse "passing Part 2" with "becoming board certified." Treat Part 2 as a necessary milestone inside a longer sequence that also includes Part 3.
Who Hires Candidates With This Credential
Nuclear medical physicists working toward or holding this credential typically support hospital nuclear medicine departments, PET/CT and SPECT/CT imaging programs, radiopharmaceutical therapy services, and academic medical centers that run CAMPEP-accredited residency programs. Employers in these settings care about the exact competencies mapped in the five domains - dose calibrator and survey meter calibration, PET and SPECT quality control, radiation safety program oversight, and clinical procedure physics support for cardiac, oncologic, and thyroid nuclear medicine studies.
If you're evaluating how this credential affects job prospects or compensation, keep in mind that broad medical physicist salary surveys don't always separate nuclear medicine specialists from other tracks, and they never guarantee a pay increase tied to passing a single exam part. Our ABR-NMP-P2 Jobs page outlines the kinds of roles that reference this credential, while the ABR-NMP-P2 Salary Guide 2026: Complete Earnings Analysis and Is the ABR-NMP-P2 Certification Worth It? Complete ROI Analysis 2026 articles work through what's known - and what isn't - about compensation and career return.
Building a Study Plan Around the Name
Once you understand what each part of "ABR-NMP-P2" actually represents, planning your review becomes more concrete. Rather than studying generically, sequence your preparation around the five named domains, since each one draws from distinct source material - dosimetry and safety references for Domain 1, PET physics literature for Domain 2, camera and SPECT performance references for Domain 3, statistics and counting-system references for Domain 4, and clinical nuclear medicine procedure texts for Domain 5.
Radiation Protection, Safety, Professionalism and Ethics
- Review internal, fetal, and CT dosimetry calculations
- Work through shielding design and occupational safety scenarios
PET & Hybrid and Single Photon Imaging Systems
- Practice attenuation, scatter, and random correction problems
- Drill intrinsic/extrinsic camera performance and SPECT QC steps
Radiation Measurements
- Rebuild comfort with chi-square tests and error propagation
- Practice dead-time and detector efficiency calculations using the ABR constants list
Clinical Procedures and Full Review
- Work through cardiac, thyroid, bone, and radionuclide therapy physics scenarios
- Run timed mock sessions mirroring the 130-question, single-sitting format
For a more detailed week-by-week breakdown with pacing recommendations tied to the actual exam clock, see the ABR-NMP-P2 Study Guide 2026: How to Pass on Your First Attempt. And when you're ready to test your recall against realistic multiple-choice and image-location style questions, our practice platform on the main practice test site lets you rehearse under conditions similar to the real remote exam. You can also keep a condensed reference handy using the ABR-NMP-P2 Cheat Sheet 2026: One-Page Review of Must-Know Facts during your final review weeks.
Frequently Asked Questions
It refers to the American Board of Radiology's Nuclear Medical Physics Part 2 Qualifying Examination - the second qualifying exam in ABR's nuclear medical physics certification track.
No. Passing Part 2 alone does not confer certification. The full initial-certification pathway requires passing Parts 1, 2, and 3.
The 2026 remote exam guide specifies 130 questions with 4 hours 1 minute of answering time, plus tutorial and break allowances bringing the total allotted time to 4 hours 46 minutes.
ABR has not published domain-specific percentage weightings for this exam, so all five domains - from radiation protection to clinical procedures - should be prepared with equal seriousness.
The Part 2 examination fee is USD 640, due at registration, separate from the USD 250 initial certification application fee and any one-time USD 250 re-examination fee.