USMLE Step 3 — Free Online Mock Test
Post-March-10-2026 format. Day 1: 6 blocks × ~39 Q × 60 min (Foundations). Day 2: 6 blocks × 30 MCQ × 45 min + 13 CCS cases (Advanced Clinical). 2-day exam. · Official language: English.
USMLE Step 3 exam at a glance
USMLE Step 3 full-length mock tests
Attempt 50 full-length USMLE Step 3 mock tests, each a distinct question set built on the real 427-question, 890-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
USMLE Step 3 key facts & eligibility
| Conducting body | USMLE program — co-sponsored by the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME) |
|---|---|
| Official website | usmle.org ↗ |
| Mode | A two-day, computer-based examination taken at a Prometric test centre. It is the final USMLE step, usually taken during residency. |
| Frequency | Offered year-round by appointment. |
| Scoring & marking | Step 3 is spread over two days. Day 1 (Foundations of Independent Practice, FIP) has 232 multiple-choice items in 12 blocks; Day 2 (Advanced Clinical Medicine, ACM) has 180 multiple-choice items in 9 blocks plus 13–14 computer-based case simulations (CCS). It is reported as a three-digit numeric score and assesses whether you can apply medical knowledge for the unsupervised practice of medicine. |
| Score validity | Passing Step 3 completes the USMLE sequence required for full medical licensure. |
| Language | English. |
Who is eligible for USMLE Step 3?
You must have passed Step 1 and Step 2 CK and (for most applicants) obtained your MD or DO degree; international graduates must hold ECFMG certification.
Last verified July 2026 against USMLE Step 3. Always confirm current details on the official website before you register.
USMLE Step 3 section breakdown
The USMLE Step 3 mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. Inter-section breaks are enforced.
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Day 1 — Block 1 (39 Q)
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Day 1 — Block 2 (39 Q)
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Day 1 — Block 3 (39 Q)
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Day 1 — Block 4 (39 Q)
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Day 1 — Block 5 (39 Q)
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Day 1 — Block 6 (39 Q)
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Day 2 — Block 1 (30 Q)
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Day 2 — Block 2 (30 Q)
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Day 2 — Block 3 (30 Q)
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Day 2 — Block 4 (30 Q)
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Day 2 — Block 5 (30 Q)
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Day 2 — Block 6 (30 Q)
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Day 2 — CCS (13 cases)
USMLE Step 3 scoring & marking scheme
Strategy: USMLE Step 3 has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: USMLE Step 3 (% accuracy).
How USMLE Step 3 is conducted
- Mode
- Test format
- Backtracking
- Mark for review
Tools available during the USMLE Step 3 exam
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Lab Values
Wrexa Edge renders these tools inside the mock test exactly as they appear on the real USMLE Step 3 exam — same shortcuts, same behaviour.
USMLE Step 3 time strategy
With 427 questions in 890 minutes, you have about 125 seconds per question on average. Successful candidates aim for the following pacing on each section:
- Day 1 — Block 1 (39 Q)
- Day 1 — Block 2 (39 Q)
- Day 1 — Block 3 (39 Q)
- Day 1 — Block 4 (39 Q)
- Day 1 — Block 5 (39 Q)
- Day 1 — Block 6 (39 Q)
- Day 2 — Block 1 (30 Q)
- Day 2 — Block 2 (30 Q)
- Day 2 — Block 3 (30 Q)
- Day 2 — Block 4 (30 Q)
- Day 2 — Block 5 (30 Q)
- Day 2 — Block 6 (30 Q)
- Day 2 — CCS (13 cases)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
USMLE Step 3 topics covered
Across the 50 Wrexa Edge variants of USMLE Step 3, the following topics appear most often (sample distribution from one variant):
Day 1 — Block 1 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 1 — Block 2 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 1 — Block 3 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 1 — Block 4 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 1 — Block 5 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 1 — Block 6 (39 Q)
- Lower Limb · 2
- Carbohydrate Metabolism · 2
- Bacteriology · 2
- Cardiovascular · 1
- Respiratory · 1
- Inflammation · 1
- Immunopathology · 1
- SAH Workup · 1
Day 2 — Block 1 (30 Q)
- Gastroenterology · 2
- Trauma · 2
- Obstetrics · 2
- Neonatology · 2
- Schizophrenia & Psychosis · 2
- Cardiovascular · 2
- Respiratory · 1
- DKA · 1
Day 2 — Block 2 (30 Q)
- Hepatology · 3
- GI Surgery · 2
- Obstetric Emergencies · 2
- Immunization · 2
- CNS · 2
- OCD · 1
- PTSD · 1
- SBO · 1
Day 2 — Block 3 (30 Q)
- Endocrinology · 3
- Breast · 2
- Nutrition · 2
- Personality Disorders · 2
- Antimicrobials · 2
- Obstetric Emergencies · 1
- Obstetrics · 1
- Pertussis · 1
Day 2 — Block 4 (30 Q)
- Neurology · 3
- Urology · 2
- Gynaecology · 2
- Paediatric Infections · 2
- Substance Use Disorders · 2
- Antimicrobials · 2
- NMS · 1
- Antipsychotics · 1
Day 2 — Block 5 (30 Q)
- Rheumatology · 3
- Vascular · 2
- Gynaecology · 2
- Paediatric Emergencies · 2
- Childhood Disorders · 2
- Chemotherapy · 2
- Breast Cancer Screening · 1
- Lung Cancer Screening · 1
Day 2 — Block 6 (30 Q)
- Clinical — Cardiology · 4
- Clinical — Respiratory · 4
- Hematology · 2
- Acute Abdomen · 2
- Gynaecologic Oncology · 2
- Congenital Disorders · 2
- Psychiatric Emergencies · 2
- Infectious Disease · 1
Day 2 — CCS (13 cases)
- GI — Hepatology · 4
- Infectious Disease · 3
- Trauma · 2
- Nephrology — Nephritic · 2
- GI — Esophagus · 1
- Nephrology — Nephrotic · 1
USMLE Step 3 difficulty calibration
Elite tier. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months.
Post-March-10-2026 format. Day 1: 6 blocks × ~39 Q × 60 min (Foundations). Day 2: 6 blocks × 30 MCQ × 45 min + 13 CCS cases (Advanced Clinical). 2-day exam. · Official language: English.
Verified content — Wrexa Edge's USMLE Step 3 bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for USMLE Step 3
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
USMLE Step 3 study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Foundations of Independent Practice topics (biostatistics, ethics, pharmacology)
- UWorld Step 3 multiple-choice by system
- Screening, prevention and management basics
- Advanced clinical management questions
- Practise the CCS case-simulation interface until fluent
- Time-management for the mixed Day-2 format
- Full two-day practice with CCS cases
- Review common CCS pitfalls (orders, timing)
- Target weak areas
Where USMLE Step 3 can take you
A strong USMLE Step 3 result opens up these careers and higher-study paths:
- Completes licensure
- Residency requirement
- Independent practice
- Career progression
Best books & official prep for USMLE Step 3
- UWorld Step 3 QBank (incl. CCS) — UWorld
- Master the Boards USMLE Step 3 — Conrad Fischer
- Crush Step 3 CCS — Various
Official practice: Practise the CCS interface until it is second nature — it is unlike any other exam section — alongside UWorld for the multiple-choice days.
Previous-year papers: The USMLE provides official sample items and CCS practice cases rather than past papers.
Frequently asked questions
- What is the USMLE Step 3 exam pattern?
- USMLE Step 3 contains 427 questions across 13 sections: Day 1 — Block 1 (39 Q), Day 1 — Block 2 (39 Q), Day 1 — Block 3 (39 Q), Day 1 — Block 4 (39 Q), Day 1 — Block 5 (39 Q), Day 1 — Block 6 (39 Q), Day 2 — Block 1 (30 Q), Day 2 — Block 2 (30 Q), Day 2 — Block 3 (30 Q), Day 2 — Block 4 (30 Q), Day 2 — Block 5 (30 Q), Day 2 — Block 6 (30 Q), Day 2 — CCS (13 cases). Total duration is 890 minutes (about 125 seconds per question).
- Does USMLE Step 3 have negative marking?
- No — USMLE Step 3 has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is USMLE Step 3 scored?
- Scaled score range: 0 to 100. USMLE Step 3 (% accuracy).
- How can I practise USMLE Step 3 online for free?
- Wrexa Edge gives you 3 free full-length USMLE Step 3 mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of USMLE Step 3?
- USMLE Step 3 is rated Elite difficulty on Wrexa Edge. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months. Post-March-10-2026 format. Day 1: 6 blocks × ~39 Q × 60 min (Foundations). Day 2: 6 blocks × 30 MCQ × 45 min + 13 CCS cases (Advanced Clinical). 2-day exam. · Official language: English.
- How long is the USMLE Step 3 exam?
- USMLE Step 3 runs for 890 minutes total across 13 sections. On Wrexa Edge the timer is enforced exactly as on the real exam — including mandatory inter-section breaks.
- What topics are covered in USMLE Step 3?
- USMLE Step 3 is split into: Day 1 — Block 1 (39 Q), Day 1 — Block 2 (39 Q), Day 1 — Block 3 (39 Q), Day 1 — Block 4 (39 Q), Day 1 — Block 5 (39 Q), Day 1 — Block 6 (39 Q), Day 2 — Block 1 (30 Q), Day 2 — Block 2 (30 Q), Day 2 — Block 3 (30 Q), Day 2 — Block 4 (30 Q), Day 2 — Block 5 (30 Q), Day 2 — Block 6 (30 Q), Day 2 — CCS (13 cases). Each section is timed and weighted separately. Post-March-10-2026 format. Day 1: 6 blocks × ~39 Q × 60 min (Foundations). Day 2: 6 blocks × 30 MCQ × 45 min + 13 CCS cases (Advanced Clinical). 2-day exam. · Official language: English.
- What tools or aids are allowed during USMLE Step 3?
- Built-in lab values reference table (USMLE-style). Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the USMLE Step 3 test adaptive?
- No — USMLE Step 3 is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many USMLE Step 3 mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct USMLE Step 3 variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 21350 unique practice questions in the real test-day interface.
- Is there a free USMLE Step 3 test series 2026?
- Yes. The Wrexa Edge USMLE Step 3 test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are USMLE Step 3 previous year question–style papers included?
- Every USMLE Step 3 mock is modelled on the official exam pattern and the style of previous years' papers — the same 427-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free USMLE Step 3 mock test online?
- Wrexa Edge's USMLE Step 3 mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the USMLE Step 3 mock test on mobile?
- Yes. USMLE Step 3 mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the USMLE Step 3 syllabus?
- The USMLE Step 3 syllabus maps to its 13 sections: Day 1 — Block 1 (39 Q), Day 1 — Block 2 (39 Q), Day 1 — Block 3 (39 Q), Day 1 — Block 4 (39 Q), Day 1 — Block 5 (39 Q), Day 1 — Block 6 (39 Q), Day 2 — Block 1 (30 Q), Day 2 — Block 2 (30 Q), Day 2 — Block 3 (30 Q), Day 2 — Block 4 (30 Q), Day 2 — Block 5 (30 Q), Day 2 — Block 6 (30 Q), Day 2 — CCS (13 cases). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for USMLE Step 3?
- You must have passed Step 1 and Step 2 CK and (for most applicants) obtained your MD or DO degree; international graduates must hold ECFMG certification. Wrexa Edge focuses on realistic USMLE Step 3 practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the USMLE Step 3 exam and how should I prepare?
- Official USMLE Step 3 exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free USMLE Step 3 mocks with instant scoring so you can track your readiness week by week.
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