ABIM Hematology Board Exam 2026: Blueprint, Format, and Which Resources Are Actually Worth It

The 2026 ABIM Hematology exam in one paragraph

The ABIM Hematology certification exam is a modular, single-day, up-to-240-question test that first-time takers pass about 93% of the time. It is dominated by three content areas — hematologic neoplasms (35%), coagulation (27%), and the hematopoietic system (25%) — which together are 87% of the exam. The certification fee is $2,325, the exam is administered in October–November, and registration runs December 1 through June 15 (with a brief late window after). If you build your prep around that 35/27/25 weighting and practice with exam-style questions, you're aligning effort with where the points actually are. Below is the verified detail, plus an honest read on which resources earn their price.

What is the ABIM Hematology exam blueprint for 2026?

The blueprint is the single most useful planning document you have, because it tells you exactly how the points are distributed. From ABIM's January 2026 Hematology certification blueprint:

Two things jump out. First, benign hematology is not a side dish — coagulation and the hematopoietic system are 52% of the exam combined, so trainees whose clinical time skews malignant have to deliberately shore up von Willebrand disease, hemolytic anemias, and clotting. Second, cellular therapy has grown into a testable 8% category, reflecting how central CAR-T and transplant have become. The blueprint also notes that pregnancy- and contraception-related content runs about 4% across categories. The MOC and Longitudinal Knowledge Assessment blueprints use the same five categories and identical percentages.

How is the exam structured?

The certification exam contains up to 240 single-best-answer multiple-choice questions, of which roughly 40 are unscored pilot questions. It's delivered in modules: each section holds up to 60 questions with up to two hours per section, and you cannot return to a section once you submit it. There's an optional scheduled break after each section; run long on a break and the overage comes out of your next section's clock.

That last row catches people out: the in-exam UpToDate resource is a feature of ABIM's MOC assessments, not the initial certification exam. Walk into the cert exam expecting to look things up and you'll be disappointed.

What are the 2026 fees, dates, and deadlines?

The Hematology initial certification fee is $2,325. Subspecialty exams are given in October and November, with standard registration December 1 to June 15 and a non-refundable late window June 16 to June 28.

One honest caveat: at the time of writing, ABIM's public hematology exam-dates page still listed only 2024 and 2025 dates (October 10, 2024 and November 5, 2025), and had not posted the exact fall-2026 date. Given the historical pattern, expect an October or November 2026 administration — but pull the confirmed date from your ABIM Physician Portal rather than trusting any secondhand figure, including this one.

How hard is the exam? First-attempt pass rates

First-time pass rates for hematology have sat between 90% and 94% for five straight years — this is a beatable exam for a prepared fellow, but the ~7–10% who don't pass are real, and complacency is the enemy.

For context, 2025 first-time rates ran 86% for Internal Medicine, 90% for Medical Oncology, and 93% for Hematology.

Does your In-Training Exam score predict your board result?

Yes — and more reliably than you might think. A multi-institution study found that hematology in-service exam scores were the strongest predictor of hematology certification exam performance (standardized β = 0.41), stronger than program-director ratings of medical knowledge, which were the weakest predictor (β = 0.07). The practical message: treat your ITE as a diagnostic, not a formality. A weak ITE is an early warning that should change how you study — not something to shrug off.

There's also decades of cognitive-science backing for how to study. The "testing effect" — that retrieving information through practice questions produces far better long-term retention than re-reading — is one of the most replicated findings in learning science. In plain terms: doing questions and flashcards beats highlighting a textbook, and it isn't close. Build your prep around retrieval.

Which 2026 hematology board prep resources are actually worth it?

Here's the even-handed landscape, with prices where they're actually published.

ASH-SAP is the most exam-representative questions and, if you're recertifying, the CME/MOC. Use the free ASH Image Bank for morphology, which the exam tests hard. Skip anyone recommending TrueLearn or UWorld for heme — neither offers a hematology subspecialty bank.

MeDucation's own place in this: our bank is written and reviewed by practicing board-certified hematologist-oncologists — with every distractor explained and PubMed-linked, wrapped in an AI study layer that converts your questions into FSRS spaced-repetition flashcards and auto-building mind maps, and a dashboard that tracks your performance against the blueprint. Given the testing-effect evidence above, that retrieval-and-spacing engine is the point. If you want the absolute lowest price on raw question volume, HOQ still beats us — and I'd rather tell you that than pretend otherwise.

A note on the LKA and what's new in hematology for 2026

If you're maintaining certification rather than earning it, the Longitudinal Knowledge Assessment (LKA) is now the dominant path — roughly 85% of hematologists due for assessment in 2026 chose the LKA over the traditional 10-year exam. It delivers 30 questions per quarter (120 a year), is open-resource, and gives you up to five minutes per question. New in 2026: ABIM launched two focused hematology LKA tracks — a Malignant Focus and a Classical (Non-Malignant) Focus — covering the same core blueprint but weighting toward your area of practice. The LKA enrollment deadline is November 15.

Putting it together: your 2026 game plan

Anchor to the blueprint (35/27/25/8/5), lead with retrieval practice over re-reading, treat your ITE as a diagnostic, and combine one high-volume question bank with one exam-representative review program plus the free ASH Image Bank. For the resource-by-resource decision, see our hematology-oncology question bank comparison for 2026; to turn this into a week-by-week schedule, use our 6-month ABIM study plan; and for the oncology side of a combined heme/onc year, our oncology board review strategy.

Frequently asked questions

What is the passing standard for the ABIM Hematology exam?

ABIM sets a criterion-referenced passing score rather than grading on a curve; first-time pass rates have run 90–94% over the past five years. Results are released within about three months of the last exam date.

How many questions is the ABIM Hematology exam?

Up to 240 single-best-answer questions, of which roughly 40 are unscored pilot items, delivered in modules of up to 60 questions with up to two hours each.

What's the most heavily tested topic on the hematology boards?

Hematologic neoplastic disorders at 35%, followed by coagulation at 27% and the hematopoietic system at 25% — those three are 87% of the exam.

How much does the ABIM Hematology exam cost in 2026?

The initial certification fee is $2,325. A rescore costs $250, and refund amounts depend on when you cancel relative to the exam date.

Is the ABIM Hematology certification exam open-book?

No. In-exam UpToDate access applies to ABIM's MOC assessments (the 10-year exam and the LKA), not to the initial certification exam.

Does my in-training exam score predict my board result?

Yes — hematology in-service exam scores are the strongest single predictor of certification exam performance, stronger than program-director assessments, so treat a weak ITE as an early warning.

References

1. ABIM Hematology Blueprint for Certification, January 2026 — abim.org.

2. ABIM Hematology (General) MOC/LKA Blueprint, January 2026 — abim.org.

3. ABIM — Exam Day: What to Expect (modular format) — abim.org.

4. ABIM — Open-book assessments feature access to UpToDate (MOC only) — abim.org.

5. ABIM — Exam Fees & Refund Policies — abim.org.

6. ABIM — Key Dates for the Academic Year — abim.org.

7. ABIM — Hematology Exam Dates — abim.org.

8. ABIM — Initial Certification Pass Rates — abim.org.

9. Collichio FA, et al. J Cancer Educ. 2017;32(3):647–654 — PubMed 26897634.

10. Roediger HL III, Karpicke JD. Psychol Sci. 2006;17(3):249–255.

11. ASH Fundamentals for Hematology Fellows — hematology.org.

12. Hematology Oncology Questions (HOQ) — hemeoncquestions.com.

13. BoardVitals Oncology / Hematology Board Review — boardvitals.com.

14. MeDucation AI — meducationai.com/pricing.

15. ASH Image Bank — imagebank.hematology.org.

16. ASH Hematology Review Series (2026) — hematology.org.

17. ABIM Blog — News & Notes, Spring 2026 — blog.abim.org.

18. ABIM — Longitudinal Knowledge Assessment — abim.org.