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USMLE practice questions - frequently asked questions

Plain answers about how USMLE Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real USMLE exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The USMLE exam spans 11 domains: Human Development (1–3%); Blood & Lymphoreticular/Immune Systems (9–13%); Behavioral Health & Nervous Systems/Special Senses (10–14%); Musculoskeletal, Skin & Subcutaneous Tissue (8–12%); Cardiovascular System (7–11%); Respiratory & Renal/Urinary Systems (11–15%); Gastrointestinal System (6–10%); Reproductive & Endocrine Systems (12–16%); Multisystem Processes & Disorders (8–12%); Biostatistics & Epidemiology/Population Health (4–6%); Social Sciences: Communication and Interpersonal Skills (6–9%). Every practice question on this site is tagged to one of these domains.

The USMLE exam has 280 questions and is completed in 8 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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