What Is MGP Certification?

What MGP Certification Actually Is

Certification in Pathology: Molecular Genetic Pathology (MGP) is a physician subspecialty credential jointly administered by the American Board of Pathology (ABPath) and the American Board of Medical Genetics and Genomics (ABMGG). It exists to verify that a pathologist has the depth of molecular diagnostic knowledge needed to direct or practice within a molecular genetic pathology laboratory - interpreting sequencing data, correlating molecular findings with clinical and morphologic context, and applying that expertise to solid tumors, hematologic malignancies, inherited disease, pharmacogenetics, and more.

This is a physician-track subspecialty exam. It is distinct from Laboratory Genetics and Genomics (LGG) certification, which is a different credential pathway for non-physician laboratory geneticists. If you're researching what MGP is in a broader sense, or you've landed here from a search for MGP meaning or what MGP stands for, it's worth being precise: this site and this article are specifically about the initial physician MGP examination administered through ABPath.

Who Issues It and Who It's For

Because MGP is co-administered by two boards, candidates can typically approach it from either side. This article focuses on the ABPath application route, which is the pathway most relevant to practicing anatomic and clinical pathologists moving into molecular diagnostics. Eligible candidates generally already hold primary certification in AP/CP, AP, or CP, or hold eligible ABMGG physician certification, and have completed a year of focused fellowship training.

If you want a deeper explanation of the acronym itself before diving into exam mechanics, see What Is A MGP? and What Does MGP Mean? - both cover the terminology question, while this page and our companion piece on MGP Certification focus on the credentialing process itself.

Exam Format and What Test Day Looks Like

The MGP exam is a computer-based, single-best-answer multiple-choice test that also incorporates written/practical material - meaning questions built around actual molecular data: sequence traces, karyotypes, pedigrees, and array outputs that candidates must interpret rather than recall from memory alone.

Concretely, the 2026 exam schedule includes:

• 245 questions spread across six sections
• 6 hours 34 minutes of active testing time
• 9 hours 4 minutes of total scheduled time, which accounts for instructions, a survey, and breaks
• In-person administration at Pearson VUE Professional Centers - this is not a remotely proctored, at-home exam

That's a long day, and the six-section structure matters for pacing. Candidates who haven't sat a full-day subspecialty exam before often underestimate how much stamina management factors into performance on the later sections. For a full breakdown of exactly how the difficulty compounds across the day, see How Hard Is the MGP Exam? Complete Difficulty Guide 2026.

The 17 Domains You're Actually Tested On

MGP's content blueprint is unusually granular for a pathology subspecialty exam - 17 distinct domains, each with its own approximate weight. Understanding these weights is the single most useful thing you can do before building a study plan, because they tell you where the exam actually concentrates its questions.

The remaining 14 domains carry smaller but still meaningful weights: Normal Structure and Function (7%), Molecular Genetic Principles (7%), Assay Performance and Validation (7%), Quality (6%), Infectious Disease (6%), Techniques and Methods (5%), Ethical/Legal/Regulatory Issues (5%), Inherited Cancer Syndromes (5%), Pharmacogenetics (5%), Identity Testing (4%), Indications for Testing (4%), Informatics (4%), Management and Informatics-General (3%), and Histocompatibility (2%).

A common mistake is treating all 17 domains as equally worth studying in equal depth. Given that the top three domains alone account for roughly 30% of the exam, allocating study time proportionally to blueprint weight - rather than to personal comfort level - tends to produce better outcomes. We break down every domain in detail, including specific sub-topics and common pitfalls, in MGP Exam Domains 2026: Complete Guide to All 17 Content Areas.

Eligibility: Getting to the Testing Center

Before you can register, you need to meet ABPath's eligibility criteria. Broadly, this means holding qualifying primary ABPath certification (AP/CP, AP, or CP) or eligible ABMGG physician certification, plus completing 12 months of ACGME-accredited Molecular Genetic Pathology fellowship training. There are additional medical education, licensure, and training-verification requirements layered on top of these two core pieces.

These requirements are strict enough that most candidates start planning their eligibility documentation well before they're ready to sit the exam. We've laid out the full eligibility checklist, including common documentation gaps, in MGP Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Cost and Registration Mechanics

For the ABPath application route, the 2026 initial application/examination fee is USD 2,100, which includes a USD 200 nonrefundable administrative fee. That administrative portion is worth noting specifically: even if your application is withdrawn or you become ineligible after submitting, that USD 200 is not returned.

Registration also has firm deadlines tied to the testing window, and Pearson VUE seat availability can vary by region and time of year. For the specific dates, deadlines, and a fee breakdown by line item, see MGP Exam Dates 2026: Testing Windows, Deadlines & Scheduling and MGP Certification Cost 2026: Complete Pricing Breakdown.

How the Exam Is Scored

MGP does not use a fixed percentage-correct cutoff. The ABPath passing standard is a scaled score of 500. Scaled scoring accounts for slight difficulty variation between exam forms, so "passing" isn't about hitting a specific raw number of correct answers out of 245 - it's about your performance relative to the standard as calculated through the scaling process.

In 2025, ABPath reported that 50 of 56 examinees passed overall (89%), and 45 of 49 first-time examinees passed (92%). Those figures give a sense of typical outcomes, but they shouldn't be read as a guaranteed personal probability - preparation quality, fellowship training depth, and time invested in the highest-weighted domains all move the needle. For a closer look at how these numbers break down and what they suggest about exam difficulty, see MGP Pass Rate 2026: What the Data Shows and MGP Passing Score 2026: Exactly What You Need to Pass.

Keeping the Certification Active

Once earned, current ABPath certificates carry no fixed expiration date, but continued standing depends on active participation in Continuing Certification. For ABPath diplomates, this includes:

• Biennial PATHway reporting
• Maintaining professional standing and lifelong learning in medical practice
• 70 qualifying CME credits per two-year reporting period, with at least 80% related to your scope of practice (approved training/research alternatives also exist)
• ABPath CertLink, a quarterly assessment requiring a cumulative performance of at least 60% over four years

Note that these specific continuing-certification requirements apply to ABPath diplomates; if you're certified through ABMGG, you'll follow that board's own maintenance requirements instead. This distinction trips up candidates who assume MGP maintenance is a single unified process regardless of entry pathway.

Who Hires MGP-Certified Pathologists

MGP certification signals directorship-level competency in molecular diagnostics, which is relevant to academic medical centers running in-house molecular labs, reference laboratories offering oncology and inherited-disease testing panels, and hospital systems building out precision medicine programs. The credential is frequently a stated or implied requirement for laboratory director roles that involve signing out molecular test reports, validating new assays, or overseeing CAP/CLIA-regulated molecular sections.

If you're evaluating whether pursuing MGP makes sense for your career trajectory - including how it affects job titles, laboratory director eligibility, and compensation - our companion pieces on MGP Jobs, MGP Salary Guide 2026: Complete Earnings Analysis, and Is the MGP Certification Worth It? Complete ROI Analysis 2026 go into more depth than we can cover here.

Building an MGP-Specific Prep Plan

Generic study advice - spaced repetition, timed practice blocks, active recall - works for any board exam, but it only becomes useful once it's mapped onto MGP's specific blueprint. Given that Solid Tumors, Inherited Diseases, and Hematopathology together make up close to a third of the exam, a reasonable approach is to schedule those three domains earliest in your prep timeline, while they get the most repetition before test day, and treat lower-weighted domains like Histocompatibility (2%) or Management and Informatics-General (3%) as later, lighter-touch review sessions.

For a week-by-week plan with specific resource recommendations and a full breakdown of how to sequence all 17 domains, see MGP Study Guide 2026: How to Pass on Your First Attempt. And when you're closer to test day, a condensed reference like our MGP Cheat Sheet 2026: One-Page Review of Must-Know Facts can help consolidate the highest-yield facts across every domain.

Whatever your timeline looks like, working through realistic practice questions that mirror the single-best-answer format and the written/practical data-interpretation style is one of the more reliable ways to gauge readiness before committing to a testing date. You can start building that familiarity with practice materials on the main practice test platform, which is organized around the same domain structure covered above.

Frequently Asked Questions