COMLEX Level 3

Level 3 is designed for osteopathic residents in PGY 1 or beyond who have completed at least six months of residency. Confirm your specific eligibility and registration requirements in the current Bulletin of Information, since administrative details are set by the administering board rather than by the blueprint.

As of now it is a two-day, computer-based examination. The administering board has announced that effective January 13, 2027, Level 3 will change to a one-day examination containing fewer test questions, with the Blueprint unchanged. Check the Bulletin of Information for the format that applies to your test date.

Two blueprint dimensions. Dimension 1 is seven competency domains, with osteopathic patient care and procedural skills the largest at 40 percent, followed by application of knowledge at 15 percent and osteopathic principles, practice, and manipulative treatment at 10 percent. Dimension 2 is ten clinical presentations, led by musculoskeletal at 13 percent, wellness at 12 percent, and nervous system/mental health, gastrointestinal, circulatory/hematologic, and respiratory at 10 percent each.

It is not a basic-science recall exam. It tests whether you can practice unsupervised, so items emphasize clinical decision-making, systems-based practice, communication, and professionalism in real resident-level scenarios. Candidates who have been functioning on inpatient and outpatient services usually find the clinical framing familiar; the difficulty is breadth and stamina, not obscure trivia.

Studying only disease facts and ignoring the smaller domains is the classic error. Communication skills, professionalism, practice-based learning, and systems-based practice together make up a meaningful share of the blueprint and are easy to neglect. Also common: skipping the CDM tutorial, so unfamiliar item formats consume time, and under-preparing the musculoskeletal presentation, the single heaviest clinical category.

Start with the Blueprint and test specifications, then do the Level 3 CDM tutorial so format is not a surprise. Build a calendar weighted to blueprint percentages: musculoskeletal and wellness first, then the four 10 percent presentations, then the smaller systems. Layer the non-clinical domains across the whole schedule instead of cramming them at the end.

There is no official recommended duration, and the source does not publish one. Residents typically prepare while working full time, so spread review across several months in short, frequent blocks rather than a final cram. Let your own practice gaps drive the schedule, and prioritize the highest-weighted domains rather than starting from page one of a review book.

Yes. Osteopathic principles, practice, and manipulative treatment is its own competency domain at 10 percent of the blueprint, and the musculoskeletal system is the largest clinical presentation at 13 percent. Expect OMT to appear both as standalone principle-and-practice content and integrated into musculoskeletal and other clinical scenarios.

The administering board publishes a Bulletin of Information, test specifications, the CDM tutorial, testing windows and score release dates, and performance data. Those pages are the authoritative source for timing, scoring, and what to expect on exam day. Use this page for orientation only, and verify every administrative detail there before you register.