Medical Licensing Exam Prep

USMLE Step 1, 2 CK, and 3

Prepare for all three steps of the United States Medical Licensing Examination with comprehensive practice tests grounded in official exam blueprints. Get exam-ready with realistic questions, detailed explanations, and AI-powered feedback.

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Duration

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Questions

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Cost

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Where to register
NBME and FSMB (USMLE Program)

Issued by NBME and FSMB (USMLE Program). Delivered via Prometric. US medical school graduates apply through NBME; international graduates (IMG) apply through ECFMG.

Register on usmle.org
01·Overview

Certification overview

The format, prerequisites, and what to expect on exam day.

Exam details

  • Step 1 Duration

    8 hours (multiple block formats)

  • Step 1 Questions

    Up to 280 items across 7 blocks (60 minutes each)

  • Step 2 CK Duration

    9 hours (multiple block formats)

  • Step 2 CK Questions

    Up to 318 items across 8 blocks

  • Step 3 Duration

    2 days (Day 1 ~7 hours, Day 2 ~9 hours)

  • Step 3 Questions

    Day 1: 232 items in 12 blocks. Day 2: 180 items plus 13 to 14 case simulations.

  • Step 1 Scoring

    Pass/Fail (changed 2022)

  • Step 2 CK & 3 Scoring

    Numeric score

  • Testing Centers

    Prometric locations nationwide

  • Cost per Step

    See usmle.org bulletin for current fees by step

Prerequisites
  • MD or DO from accredited medical school
  • Completion of required clinical rotations (for Steps 2 CK and 3)
  • Eligibility determination by NBME (US) or ECFMG (IMG)
  • Active registration in USMLE program
  • Valid photo ID for testing center
  • Minimum passing scores on prior steps to advance
02·Domains

Exam domains

Topics on the official blueprint, with their relative weight.

01
Step 1: Foundations of Medicine
Multi-day exam
  • Foundational sciences (anatomy, physiology, biochemistry)
  • Pathophysiology and disease mechanisms
  • Pharmacology and therapeutics
  • Behavioral sciences and epidemiology
  • Clinical applications of basic science concepts
02
Step 2 CK: Clinical Knowledge
Multi-day exam
  • Internal medicine and subspecialties
  • Surgery and surgical subspecialties
  • Obstetrics and gynecology
  • Pediatrics
  • Psychiatry and behavioral health
  • Emergency medicine
  • Health promotion and disease prevention
03
Step 3: Independent Medical Practice
Multi-day exam
  • Patient management in ambulatory settings
  • Physician-patient communication and shared decision-making
  • Biomedical and clinical science application
  • Medical knowledge synthesis across disciplines
  • Safety and quality in unsupervised practice
03·Key topics

What you actually study

Service families and concept clusters that show up across questions.

Core Medical Sciences

  • Anatomy and physiology
  • Biochemistry and molecular biology
  • Pathology and pathophysiology
  • Pharmacology
  • Microbiology and immunology

Clinical Specialties

  • Internal medicine
  • Surgery
  • Obstetrics and gynecology
  • Pediatrics
  • Psychiatry
  • Emergency medicine

Patient Management

  • Diagnosis and differential diagnosis
  • Treatment and management planning
  • Patient communication
  • Safety and quality metrics
  • Evidence-based practice

Systems and Syndromes

  • Cardiovascular system
  • Respiratory system
  • Gastrointestinal system
  • Renal and urinary system
  • Nervous system
  • Endocrine system

Public Health and Ethics

  • Epidemiology and biostatistics
  • Medical ethics and professionalism
  • Preventive medicine
  • Health disparities
  • Population health

High-Value Clinical Skills

  • History and physical examination
  • Clinical reasoning and synthesis
  • Risk assessment and stratification
  • Shared decision-making
  • Self-directed learning
04·Study tips

How to actually pass it

Practical strategies for the weeks before, and the morning of.

Preparation strategy
  • Use official NBME Self-Assessments for each Step to gauge readiness
  • Study with First Aid for USMLE Step exams as foundational resource
  • Practice with UWorld, NBME, and other question banks to build pattern recognition
  • Focus on clinical reasoning alongside knowledge recall for Steps 2 and 3
  • Review official USMLE Content Descriptions and blueprints for each Step
  • Schedule adequate study time: Step 1 typically 6-12 months, Step 2 CK 4-8 weeks after Step 1, Step 3 varies
  • Study organ systems systematically to connect basic science to clinical practice
Exam day
  • Arrive early to the Prometric center and complete check-in procedures
  • Read questions carefully; do not rush through scenarios and clinical vignettes
  • Manage block time strategically: Step 1 and Step 2 CK use timed blocks
  • Use breaks wisely to rest and refocus attention
  • Pay attention to step-specific pacing rules; rules differ between exam formats
  • Stay calm if time pressure increases; focus on answering the question at hand
  • Mark difficult questions and return to them if time permits

Master the USMLE sequence step by step.

Realistic practice questions with detailed explanations that mirror the official exam. Start free, no card required.

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USMLE Step 1, 2 CK, 3 Practice Tests | Medical Licensing Exam | ExamCoachAI | ExamCoachAI