- What the PP Exam Actually Tests
- Registration, Fees, and Test-Day Mechanics
- The 23 Domains: Where the Points Actually Come From
- Written/Practical vs. Virtual Microscopy: Two Different Games
- The Passing Standard and What "500" Means
- Eligibility Checkpoints Before You Can Sit
- Building a PP-Specific Study Timeline
- After You Pass: Keeping the Certificate Active
- Frequently Asked Questions
- The 2026 PP exam has 235 total questions split into 170 written/practical and 65 virtual-microscopy items across six timed sections.
- Fetal/Neonatal pathophysiology is the single largest written/practical category at 15% of that component.
- Passing requires a scaled score of 500, not a fixed raw percentage of correct answers.
- The 2026 initial application/exam fee is $2,100, which includes a nonrefundable $200 administrative fee.
What the PP Exam Actually Tests
The American Board of Pathology's Certification in Pathology: Pediatric Pathology (PP) is an initial subspecialty examination for pathologists who have already completed AP/CP or AP primary certification (or the equivalent Royal College of Physicians and Surgeons of Canada credential) and gone on to complete pediatric pathology fellowship training. It is not a generalist survey exam - every question maps to a fetal, neonatal, or pediatric organ-system scenario, and the format deliberately splits testing into two components that are scored and weighted separately.
If you're just starting to map out your prep, our companion piece on the complete guide to all 23 content areas is a useful second stop after this article, since it breaks each domain down in more depth than we can cover here.
Registration, Fees, and Test-Day Mechanics
The 2026 initial application/examination fee is USD 2,100, which includes a USD 200 nonrefundable administrative fee. That administrative portion is charged regardless of outcome, so it's worth confirming your eligibility documentation is complete before you submit. For a full line-item breakdown of what that fee covers and how it compares to renewal-related costs, see our pricing breakdown.
Testing takes place in person at Pearson VUE Professional Centers. This matters for scheduling: you're booking a seat at a physical test center, not a remote-proctoring slot, so travel and center availability become part of your planning. Review current windows on our exam dates and deadlines guide before you lock in a testing period.
The exam day itself is longer than the "active" testing time suggests. The scheduled examination time is 8 hours 53 minutes, including instructions, a survey, and breaks - but the actual active testing across all six sections totals 6 hours 23 minutes. Budget your energy accordingly; this is a full-day commitment, not a quick afternoon test.
| Component | Question Count | Time Allotted |
|---|---|---|
| Written/Practical | 170 questions | 3 hours 8 minutes |
| Virtual Microscopy | 65 questions | 3 hours 15 minutes |
| Total (Active Testing) | 235 questions | 6 hours 23 minutes |
The 23 Domains: Where the Points Actually Come From
The 2026 content specification organizes PP around 23 shared headings, but - and this is the detail candidates most often miss - the written/practical percentage and the virtual-microscopy percentage for each domain are reported separately. The blueprint intentionally avoids presenting a single combined weight, because the two components are scored on different tracks. Treat each domain as having two separate "sizes."
Domain 2: Perinatal Pathology - Fetal/Neonatal Pathophysiology
This is the single largest written/practical category in the entire blueprint at 15%, and it also carries a full 10% on virtual microscopy - tied with Domain 1 as the top perinatal category on that component.
- Master causes and patterns of stillbirth, fetal growth abnormalities, and neonatal organ injury
- Know how gestational age and clinical history change the differential for placental/fetal findings
Domain 1: Perinatal Pathology - Placental-Maternal-Fetal Relationships
The other perinatal domain, weighted 7% written/practical and 10% virtual microscopy - the same 10% VM weight as Domain 2, underscoring how heavily perinatal material dominates the microscopy component overall.
- Placental lesions tied to maternal disease (preeclampsia, diabetes, infection)
- Cord and membrane pathology and its clinical correlations
Domain 13: Hematopoietic System
Bone marrow, lymph nodes, thymus, spleen, and other lymphoid tissue make up 6% written/practical and 9% virtual microscopy - one of the higher VM weights outside the perinatal domains.
- Reactive versus neoplastic pediatric lymphoid proliferations
- Storage and marrow-failure disorders unique to pediatric populations
Domain 20: Diagnostic/Technical Procedures
Weighted 7% written/practical but only 2% virtual microscopy - a domain that rewards knowing procedure and technique questions rather than image interpretation.
- Appropriate specimen handling and ancillary study selection for pediatric tissue
- Autopsy and biopsy technique considerations specific to fetal/pediatric cases
Several domains - Laboratory Management (Domain 21), Forensic Pathology (Domain 22), and Management & Informatics (Domain 23) - carry a written/practical weight (2% each) but 0% on virtual microscopy, meaning you will never see an image question from these areas; all testing there is written/practical only. That's a useful shortcut when allocating microscopy review time. For a domain-by-domain deep dive with every weight listed side by side, our full domains guide lays it all out.
Key Takeaway
Don't study the 23 domains as if they carry one weight. Domain 2 alone justifies more written/practical review time than Domains 8, 14, 16, or 17 combined - but its virtual-microscopy weight (10%) is proportionally smaller relative to its written share, so calibrate your image review separately from your written review.
Written/Practical vs. Virtual Microscopy: Two Different Games
Because ABPath reports these as two distinct distributions rather than a blended whole-exam percentage, it helps to think of PP as two connected exams sat on the same day. The written/practical section (170 questions, 3 hours 8 minutes) tests knowledge, mechanism, and clinical correlation through text-based vignettes. The virtual-microscopy section (65 questions, 3 hours 15 minutes) tests pattern recognition on digital whole-slide images - again, not glass slides.
Candidates who only drill image banks and neglect written/practical content - or vice versa - tend to underperform on the component they ignored, since the passing standard applies to the exam as a whole rather than rewarding strength in one component alone. If you're trying to gauge realistically how much preparation this requires, our difficulty guide walks through what makes each component challenging in different ways.
The Passing Standard and What "500" Means
PP uses a scaled score, not a raw percentage of correct answers. The passing standard is a scaled score of 500. This is important because it means the number of questions you need right isn't a fixed count you can memorize in advance - the scaling accounts for item difficulty across the pool. For a closer look at how that scaling works and what it implies for study strategy, see our passing score breakdown.
In 2025, all 17 examinees who sat the exam passed, including all 13 first-time examinees - both reported pass rates were 100%, though from a small cohort. Small cohort sizes mean these figures should be read as directional rather than statistically robust; our pass rate analysis goes into more detail on how to interpret that data responsibly.
Eligibility Checkpoints Before You Can Sit
You cannot register for PP casually - eligibility is gated by prior certification and fellowship training. Requirements include:
- Primary certification in AP/CP or AP through ABPath, or an accepted Royal College of Physicians and Surgeons of Canada certification in Anatomic Pathology or General Pathology
- 12 months of ACGME-accredited Pediatric Pathology fellowship training
- Satisfying applicable medical education, licensure, and training-verification requirements
Because these prerequisites take years to assemble, most candidates should confirm their documentation trail well before the application window opens. Our detailed eligibility guide walks through each requirement and common documentation pitfalls.
Building a PP-Specific Study Timeline
Generic study techniques - spaced repetition, timed practice blocks, active recall - work fine for PP, but only when mapped onto the actual blueprint weights rather than applied evenly across all 23 domains. Given that Domains 1 and 2 alone account for 22% of the written/practical component and 20% of virtual microscopy combined, your calendar should reflect that imbalance.
Perinatal Foundation (Domains 1-2)
- Build a written-question bank focused on fetal/neonatal pathophysiology first, since it's the largest single written/practical category
- Pair each written topic with matching virtual-microscopy image sets for placenta and fetal autopsy findings
High-Weight Organ Systems (Domains 9, 10, 13, 20)
- Rotate through GI, hepatobiliary, hematopoietic, and diagnostic/technical procedures - each carries meaningful written/practical weight
- Use timed practice blocks matching the real section lengths (roughly 3 hours 8 minutes and 3 hours 15 minutes) at least twice before your test date
Lower-Weight and VM-Only Gaps (Domains 3-8, 11-19)
- Sweep through smaller domains without overinvesting - several sit at 1-3% written/practical
- Skip heavy microscopy drilling for Domains 21-23, since they carry 0% virtual-microscopy weight
Full-Length Simulation
- Run a full mock covering both components back-to-back to build stamina for the roughly 6 hour 23 minute active-testing day
- Review missed items by domain, not by question type, to spot pattern gaps
If you want a condensed reference to carry into those final review sessions, our one-page cheat sheet compiles the must-know facts without the padding. And for hands-on practice that mirrors the real question mix, you can start working through timed sets at the main practice test hub.
After You Pass: Keeping the Certificate Active
Passing PP doesn't end your obligations to ABPath. Current certificates carry no fixed expiration date, but they remain conditional on ongoing Continuing Certification participation - including biennial PATHway reporting, professional standing, and demonstrated lifelong learning.
The standard route requires 70 qualifying CME credits per two-year reporting period, with at least 80% related to your scope of practice (approved training and research alternatives also exist). Separately, ABPath CertLink runs as a quarterly assessment with a cumulative performance requirement of at least 60% over four years. Neither of these should be a surprise on exam day - plan for them as part of your long-term career picture. If you're weighing whether the ongoing commitment is worth it relative to career benefits, our ROI analysis and salary guide cover that side of the decision, and our jobs overview looks at who typically hires PP-certified pathologists.
Frequently Asked Questions
No. Testing is administered in person at Pearson VUE Professional Centers. There is no at-home remote-proctoring option for this exam.
No. The exam uses digital virtual microscopy on computer screens as part of the computer-based exam, not a physical glass-slide station.
The 2026 schedule includes 235 total questions: 170 written/practical questions and 65 virtual-microscopy questions, spread across six timed sections.
Passing requires a scaled score of 500, not a fixed raw percentage of correct answers. See our passing score guide for more detail.
Domain 2 (Fetal/Neonatal Pathophysiology) is the largest written/practical category at 15% and ties for the top virtual-microscopy weight at 10%, making it a logical starting point.