PP Certification

What Is PP Certification?

PP stands for Certification in Pathology: Pediatric Pathology, a subspecialty credential issued by the American Board of Pathology (ABPath). It is designed for pathologists who already hold primary board certification and want to formally document advanced training and competence in diseases affecting fetuses, neonates, infants, and children. If you're just starting to research the credential, our companion piece on What Is PP Certification? walks through the basics in plain language, and What Is PP? and PP Meaning address the acronym confusion directly - this article covers only the ABPath Pediatric Pathology subspecialty, not any other credential that shares the same three letters.

Unlike a training certificate from a fellowship program, PP certification is a standardized, proctored examination administered on a fixed schedule. It signals to hiring institutions, referring pathologists, and credentialing committees that a diagnostician has passed a rigorous, content-mapped assessment covering the full breadth of pediatric and perinatal disease.

Who Administers It and Who Needs It

ABPath owns and administers PP certification, along with the content specification, scoring, and Continuing Certification requirements. Candidates typically pursue PP after completing an ACGME-accredited Pediatric Pathology fellowship following residency in Anatomic Pathology/Clinical Pathology (AP/CP) or Anatomic Pathology alone.

In practice, PP-certified pathologists work in children's hospital pathology departments, perinatal/placental pathology services, academic medical centers with pediatric programs, and reference laboratories that handle pediatric surgical and autopsy specimens. If you're evaluating career paths after fellowship, PP Jobs and PP Salary Guide 2026: Complete Earnings Analysis break down where the credential tends to matter most during hiring and promotion decisions.

Exam Format: Written/Practical and Virtual Microscopy

The PP exam is computer-based and split into two distinct components that are scored and weighted separately rather than blended into one combined distribution. Understanding this split matters because it changes how you should study - a topic can be heavily tested in one component and lightly tested in the other.

• Written/Practical component: 170 questions administered over 3 hours 8 minutes, covering case vignettes, gross and microscopic findings described in text/images, and applied diagnostic reasoning.
• Virtual Microscopy component: 65 questions administered over 3 hours 15 minutes, using digital whole-slide images rather than physical glass slides.

Together these total 235 questions and 6 hours 23 minutes of active testing, organized across six sections. The full scheduled day - including check-in, instructions, a survey, and breaks - runs 8 hours 53 minutes. For a detailed breakdown of how the sections are sequenced and how to pace yourself within each block, see PP Study Guide 2026: How to Pass on Your First Attempt and How Hard Is the PP Exam? Complete Difficulty Guide 2026.

Eligibility Requirements

Before you can sit for PP, you need to meet ABPath's subspecialty eligibility pathway. The core requirements are:

• Primary certification in AP/CP or AP from ABPath, or accepted certification in Anatomic Pathology or General Pathology from the Royal College of Physicians and Surgeons of Canada.
• Completion of 12 months of ACGME-accredited Pediatric Pathology fellowship training.
• Satisfaction of applicable medical education, licensure, and training-verification requirements set by ABPath.

For a step-by-step checklist of documentation and timing, PP Requirements 2026: Eligibility, Prerequisites & How to Qualify is the most thorough resource on this site for mapping fellowship completion to application deadlines.

Registration and Fee Mechanics

The 2026 initial application and examination fee for PP is USD 2,100. That figure includes a USD 200 nonrefundable administrative fee, meaning a withdrawn or incomplete application still forfeits that portion. Because testing happens only at Pearson VUE Professional Centers, budgeting should also account for travel and lodging near an approved test center rather than assuming a remote option.

A full breakdown of what's included in the fee, refund policy nuances, and how the administrative fee interacts with rescheduling is covered in PP Certification Cost 2026: Complete Pricing Breakdown. If you're mapping the fee against application windows and testing dates, cross-reference PP Exam Dates 2026: Testing Windows, Deadlines & Scheduling before you commit.

The 23 Domains and Blueprint Weighting

The 2026 PP content specification organizes the exam into 23 shared domain headings, each carrying two separate approximate weights - one for the Written/Practical component and one for the Virtual Microscopy component. These percentages are not combined into a single whole-exam number; ABPath deliberately reports them side by side so each component's emphasis stays visible.

The two Perinatal Pathology domains anchor the blueprint. Fetal/Neonatal pathophysiology (Domain 2) is the single largest Written/Practical category at 15%, and every perinatal-related category carries 10% in Virtual Microscopy - underscoring how central placental and perinatal disease is to this subspecialty, regardless of which component you're being tested in.

Beyond Domains 2 and 13, the blueprint spans everything from Placental-maternal-fetal relationships (Domain 1) and General Pathologic Principles and Syndromes (Domain 3) through organ-system domains - Cardiovascular, Respiratory/Mediastinum, Central Nervous System, Skin, Special Senses, Alimentary Tract, Hepatobiliary/Pancreas, Kidney/Urinary, Endocrine, Breast, Female Reproductive, Disorders of Sexual Development, Male Reproductive, Soft Tissue/Peripheral Nerve/Muscle, and Skeletal - plus practice-oriented domains covering Diagnostic/Technical Procedures, Laboratory Management, Forensic Pathology, and Management & Informatics. The three smallest-weighted domains toward the end of the list (Laboratory Management, Forensic Pathology, and Management & Informatics) carry 0% in Virtual Microscopy, meaning they're tested only through the Written/Practical component. A full domain-by-domain walkthrough with study notes for each of the 23 areas is available in PP Exam Domains 2026: Complete Guide to All 23 Content Areas.

Passing Score

PP uses a scaled score of 500 as its passing standard, not a raw percentage of correct answers. This means the number of questions you need to answer correctly can shift slightly between administrations depending on item difficulty, and there is no publicly stated "percent correct" target to aim for. For a deeper explanation of how scaled scoring works and why it differs from a fixed cut score, see PP Passing Score 2026: Exactly What You Need to Pass.

What Recent Pass Rate Data Shows

In 2025, all 17 examinees passed the PP exam, including all 13 first-time examinees - both reported pass rates came in at 100%. These figures come from a small cohort, which is typical for a subspecialty certification with a limited annual candidate pool, so a single year's data should be read with that context in mind rather than treated as a long-run guarantee. PP Pass Rate 2026: What the Data Shows discusses how to interpret small-cohort pass rate data responsibly, and Is the PP Certification Worth It? Complete ROI Analysis 2026 weighs the credential against the time and fee investment.

Maintaining Certification After You Pass

Current ABPath certificates, including PP, have no fixed expiration date. However, holding the certificate is conditional on ongoing Continuing Certification participation. This includes:

• Biennial PATHway reporting to document professional standing and lifelong learning activity.
• The standard CME route: 70 qualifying credits per two-year reporting period, with at least 80% of those credits related to your scope of practice (approved training and research alternatives also exist).
• ABPath CertLink, a quarterly low-stakes assessment tool, with a cumulative performance requirement of at least 60% measured over a four-year period.

Planning for these ongoing obligations from day one - rather than scrambling near a reporting deadline - keeps the certificate in good standing without disrupting clinical work.

Sequencing Your Study Around the Blueprint

Generic study techniques like spaced repetition and timed practice blocks work well for PP, but only when mapped to the blueprint's actual weight distribution rather than applied evenly across all 23 domains.

If you want a condensed, single-page reference to sanity-check your coverage before test day, PP Cheat Sheet 2026: One-Page Review of Must-Know Facts summarizes the highest-yield facts across all 23 domains. And once you're ready to simulate the mixed written/virtual-microscopy format under timed conditions, our practice test platform lets you rehearse both question styles before you sit for the real exam at a Pearson VUE center.

Frequently Asked Questions