- What the ABR-NMP-P2 Exam Actually Covers
- Exam Format, Timing, and Remote Proctoring Rules
- Breaking Down the Five Domains
- Registration, Fees, and Eligibility Mechanics
- A Domain-Mapped Study Timeline
- Working With ABR's Constants List and Calculator Rules
- Mistakes That Sink First Attempts
- What Happens After You Pass
- Frequently Asked Questions
- The exam has 130 questions, 4 hours 1 minute of answering time, and 4 hours 46 minutes total allotted with breaks and tutorial.
- Five domains structure the content guide: radiation protection/ethics, PET & hybrid, single-photon systems, radiation measurements, and clinical procedures.
- Part 2 costs USD 640 at registration; a separate USD 250 pathway fee applies to initial certification applications.
- Failing requires retaking the entire exam - there is no partial retake of individual domains.
What the ABR-NMP-P2 Exam Actually Covers
The Nuclear Medical Physics Part 2 Qualifying Examination is administered by the American Board of Radiology (ABR) as one component of the medical physics certification pathway. It is not a general medical physics exam - its scope is limited specifically to Nuclear Medical Physics, and its content guide draws a clear boundary around instrumentation, dosimetry, and clinical procedures that a practicing nuclear medical physicist needs to know. If you're still getting oriented to what this credential is and how it fits into the broader ABR structure, the overview at What Is ABR-NMP-P2? and the plain-language breakdown in ABR-NMP-P2 Meaning are useful starting points before diving into study logistics.
This guide focuses on the practical side: what the exam looks like on screen, how registration and fees actually work, and how to allocate study time against the five domains named in ABR's own content guide. Every fact below is sourced from ABR's published content guide and remote exam guide - nothing here is imported from a different credential that happens to share the same acronym.
Exam Format, Timing, and Remote Proctoring Rules
The exam is delivered as a remotely proctored, computer-based test taken in a single session through myABR scheduling. According to the July 23, 2026 remote-exam guide, Nuclear Part 2 consists of 130 questions with 4 hours and 1 minute of answering time. Add 20 minutes of tutorial/practice time and 25 minutes of break allowance, and the total allotted session runs 4 hours 46 minutes.
Most items are multiple-choice, but ABR's own preparation materials also describe Drag and Drop image-location items - you may be asked to identify an anatomical site, an equipment component, or a specific region on a graph rather than simply choosing from a list. This format detail matters for how you practice: passive flashcard review won't train you to click the correct region on a SPECT/CT slice or a decay curve.
Remote Testing Requirements
Because this is a remotely proctored exam, environment and equipment compliance are graded conditions, not suggestions.
- A private, quiet room with one active monitor and an external side-view webcam
- Live monitoring plus recorded review by ABR staff
- Closed-book conditions - no scratch paper or personal notes permitted
- A compliant physical erasable whiteboard, wiped clean before and after the session
- A completed Exam Readiness Check on the actual computer and location you'll use on test day
One mechanic trips up more candidates than it should: starting a break locks your responses to every question you've already viewed, including ones left unanswered or flagged for review. Go back through flagged items before you click "break." Also note that exceeding your allotted break time reduces your remaining answering time - the clock doesn't pause the rest of the exam to compensate.
Key Takeaway
Treat your break strategy as part of exam strategy. Do a final flagged-question sweep before every break, and keep your webcam and connection active throughout - a dropped connection during a break is your responsibility to manage, not the proctor's.
Breaking Down the Five Domains
ABR's content guide (updated July 2, 2026) organizes Nuclear Medical Physics Part 2 into five domains, and it does not publish percentage weightings for any of them. That means you should not assume any domain is "worth less" and study it lightly - treat all five as fully in-scope. For a deeper walkthrough of each domain with more granular subtopics, see ABR-NMP-P2 Exam Domains 2026: Complete Guide to All 5 Content Areas.
Domain 1: Radiation Protection, Safety, Professionalism and Ethics
Covers internal, fetal, and CT dosimetry; occupational and public safety; shielding calculations; and professional ethics scenarios.
- Be fluent in shielding geometry and occupancy-factor reasoning, not just formulas
- Know fetal and internal dose estimation approaches cold
Domain 2: PET & Hybrid
PET detector physics, acquisition modes, reconstruction algorithms, attenuation/random/scatter corrections, quantification, PET/CT integration, quality control, and acceptance/annual testing.
- Practice reasoning through correction-chain errors (e.g., what a missed attenuation correction does to an image)
- Know acceptance testing checklists distinct from routine QC schedules
Domain 3: Single Photon Imaging Systems
Scintillation and solid-state cameras and hybrid systems: intrinsic and extrinsic performance testing, collimation, digital and dynamic imaging, SPECT, SPECT/CT, and quality control.
- Be able to troubleshoot uniformity, resolution, and linearity failures from test images
- Understand collimator selection tradeoffs across clinical scenarios
Domain 4: Radiation Measurements
Dose calibrators, well counters, survey meters, thyroid probes, detector efficiency, dead time, single- and multichannel analyzers, and statistical methods.
- Master error propagation, chi-square tests, and minimum detectable activity calculations
- Practice dead-time correction problems until they're automatic
Domain 5: Clinical Procedures
Cardiac, pulmonary, tumor, bone, brain, thyroid, and lymphatic imaging procedures, plus radionuclide therapy and brachytherapy.
- Connect physics principles to why a specific procedure protocol is used clinically
- Review radionuclide therapy dosimetry alongside brachytherapy source handling
If you're unsure how difficult this mix of quantitative and clinical-reasoning content actually is compared to other qualifying exams in the pathway, How Hard Is the ABR-NMP-P2 Exam? Complete Difficulty Guide 2026 walks through what makes Part 2 distinct from Part 1 and Part 3.
Registration, Fees, and Eligibility Mechanics
Part 2 registration happens through myABR, and the 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 rather than an exam sitting fee. If you fail on your first attempt, ABR lists a one-time USD 250 re-examination fee for Part 1 and/or Part 2. All fees are nonrefundable, though prepaid exam fees tied to a cancellation or nonattendance roll forward to your next available exam date. For the full fee breakdown across the certification pathway, see ABR-NMP-P2 Certification Cost 2026: Complete Pricing Breakdown.
| Item | Amount | When It Applies |
|---|---|---|
| Part 2 Exam Fee | USD 640 | Due at registration |
| Initial Certification Application | USD 250 | Separate pathway charge |
| Re-examination Fee | USD 250 (one-time) | After a first-attempt failure |
Eligibility for standard candidates requires passing both the General and Clinical sections of Part 1, plus 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 lasts six full calendar years from residency completion or Part 2 approval, whichever comes first. Already-certified physicists pursuing an additional specialty follow a separate ABR-approved prospective supervised clinical training pathway. Full detail on qualifying pathways is in ABR-NMP-P2 Requirements 2026: Eligibility, Prerequisites & How to Qualify.
For the 2027 cycle, the application window listed on ABR's certification page runs from the first business day in February through March 31, 2027. Approved applicants are invited to register in May 2027, and the published exam date is August 11, 2027. Mark these dates early - see ABR-NMP-P2 Exam Dates 2026: Testing Windows, Deadlines & Scheduling for the full scheduling cycle and what happens if you miss a window.
A Domain-Mapped Study Timeline
Generic study techniques like spaced repetition or timed practice blocks only help if they're pointed at the right content at the right time. Below is one way to sequence an eight-week runway against the five domains, front-loading the most calculation-heavy material first so it has time to become automatic before exam day.
Radiation Measurements (Domain 4)
- Drill dead-time correction, detector efficiency, and MDA calculations daily
- Work chi-square and error-propagation problems until the steps are reflexive
PET & Hybrid and Single Photon Systems (Domains 2 & 3)
- Pair each correction technique (attenuation, scatter, random) with a failure-mode scenario
- Practice image-based QC troubleshooting for both PET/CT and SPECT/CT
Radiation Protection, Safety, Professionalism and Ethics (Domain 1)
- Rebuild shielding calculations from first principles rather than memorized outputs
- Work through fetal and internal dosimetry case scenarios
Clinical Procedures (Domain 5) plus full mixed review
- Connect each clinical procedure to its underlying instrumentation and dosimetry principles
- Run full-length, timed mixed-domain practice sessions to build stamina for the 4-hour-1-minute answering window
Whatever timeline you build, revisit the official domain list before finalizing it - the ABR-NMP-P2 Cheat Sheet 2026: One-Page Review of Must-Know Facts is a compact way to sanity-check coverage in your final two weeks.
Working With ABR's Constants List and Calculator Rules
ABR supplies a list of constants and physical values for use during the exam, but explicitly does not guarantee that list covers every value a question might require. Spend time before exam day simply reviewing how that reference list is organized so you're not hunting for a format you've never seen under time pressure.
You'll have access to either an embedded on-screen calculator or an ABR-approved handheld calculator, plus a compliant physical erasable whiteboard for working problems - remember it must be wiped clean at both the start and end of your session. ABR's own preparation materials mention calculator familiarization exercises involving radioactive decay and Mo-99/Tc-99m generator calculations. These are explicitly practice exercises, not real exam questions, but they signal the calculation style you should expect: decay correction, generator elution timing, and activity math that needs to be fast and error-free under a closed-book, no-scratch-paper condition.
Key Takeaway
Practice Mo-99/Tc-99m generator and decay-correction math on a whiteboard under time pressure, not on scratch paper at your leisure - the exam environment won't allow the latter.
Mistakes That Sink First Attempts
A few recurring errors show up in how candidates prepare for this specific exam:
- Treating domains as unequally weighted. ABR does not publish domain percentages for this exam, so skipping "smaller-sounding" domains like professionalism and ethics within Domain 1 is a gamble, not a strategy.
- Under-practicing Drag and Drop items. If your practice bank is 100% traditional multiple-choice, you haven't trained for the image-location format ABR describes in its preparation materials.
- Ignoring the break-lock rule. Losing access to flagged questions because you started a break early is an avoidable, self-inflicted point loss.
- Skipping the Exam Readiness Check. Technical issues discovered on test day, rather than during the readiness check, eat directly into your answering time.
- Studying in isolation from clinical context. Domain 5's clinical procedures connect directly to Domains 2-4's instrumentation and dosimetry content - studying them as unrelated silos wastes review time.
If you want a data-informed view of how outcomes compare across the medical physics Part 2 candidate pool generally (noting that ABR's published pass-rate figures are all-specialty aggregates, not broken out for Nuclear Medical Physics specifically), see ABR-NMP-P2 Pass Rate 2026: What the Data Shows. And if you're weighing exactly what score threshold you need to clear, note that ABR uses a criterion-referenced pass/fail standard rather than a curve - more detail is in ABR-NMP-P2 Passing Score 2026: Exactly What You Need to Pass.
What Happens After You Pass
Results are typically posted in myABR with an email notification about a month after the exam. A failing result means retaking the entire Part 2 exam - there's no partial retake of individual domains, which is another reason to treat every domain as fully in scope during preparation.
Passing Part 2 moves you forward in the pathway, but full board certification requires completing Part 3 as well. Once fully certified, physicists maintain their credential through ABR's Continuing Certification program: 75 qualifying CME/CE credits per rolling three-year period, one Practice Quality Improvement or participatory activity per rolling three-year period, and ongoing Online Longitudinal Assessment participation with at least 52 answered questions per year. Newly certified diplomates first face the education and improvement requirements in year four. None of this is a "renewal" of Part 2 itself - it's a separate, later maintenance obligation tied to full certification. If you're weighing whether the entire certification investment pays off, Is the ABR-NMP-P2 Certification Worth It? Complete ROI Analysis 2026 lays out the considerations, and ABR-NMP-P2 Jobs covers where this credential is typically sought by employers.
For structured practice that mirrors the five official domains and the multiple-choice plus Drag and Drop format described above, our practice test platform builds original questions mapped to each content area - not recalled exam items, but scenario-based problems designed to train the same reasoning skills the real exam tests. You can also browse our full question bank overview to see how domain coverage is structured before committing to a study plan.
Frequently Asked Questions
The exam has 130 questions with 4 hours 1 minute of answering time. Including the 20-minute tutorial and 25 minutes of break allowance, the total allotted session is 4 hours 46 minutes.
No. ABR's Nuclear Medical Physics Part 2 content guide lists five domains in a defined order but does not publish percentage weightings for any of them, so all five should be studied thoroughly.
The Part 2 exam fee is USD 640, due at registration. This is separate from the USD 250 initial certification application fee and a one-time USD 250 re-examination fee charged after a first-attempt failure.
No. The exam is closed-book. You may use a compliant physical erasable whiteboard, which must be clear at the start and end of the session, but scratch paper and study notes are prohibited.
You must retake the entire Part 2 exam - there is no option to retest only the domains you struggled with. A one-time USD 250 re-examination fee applies after a first-attempt failure.