Is USMLE Step 2 CK scored?

Yes. Unlike Step 1, Step 2 CK still reports a three-digit numeric score. Since Step 1 became pass/fail, residency programs place greater weight on the Step 2 CK score, so it has become one of the most important objective metrics in a US residency application.

How many questions are on Step 2 CK and how long is it?

Step 2 CK is a one-day exam of about 9 hours containing up to 318 multiple-choice questions in eight 60-minute blocks of up to 40 questions, plus break time. Questions are predominantly clinical vignettes testing diagnosis, investigation and management.

What disciplines does Step 2 CK cover?

Step 2 CK covers internal medicine, surgery, pediatrics, obstetrics and gynecology, and psychiatry, along with cross-cutting areas such as emergency medicine, preventive medicine and ethics. Internal medicine carries the largest share of questions, and management and next-best-step reasoning are central throughout.

What is a good Step 2 CK score?

There is a minimum passing score set by the USMLE program (currently in the low 200s), but competitive scores vary by specialty. With Step 1 now pass/fail, many applicants aim well above the mean to strengthen their application, especially for competitive specialties. Consistent practice-test performance is the best predictor of your real score.

How long should I prepare for Step 2 CK?

Many candidates use a dedicated period of 4 to 8 weeks, often building on clinical rotation knowledge. A question-bank-led plan with timed blocks, full explanation review and regular full-length practice exams is the most effective way to raise your score.

How is Step 2 CK different from Step 1?

Step 1 focuses on integrated basic sciences and is pass/fail; Step 2 CK focuses on clinical decision-making — diagnosis, investigation and management — and is scored. Step 2 CK rewards next-best-step reasoning and familiarity with guideline-based management rather than mechanism recall.

How many Step 2 CK practice questions does MedLumen have?

MedLumen's Step 2 CK bank is a comprehensive, regularly updated set of clinical vignettes across all core disciplines, with full-length mocks, AI-adaptive selection, detailed explanations and analytics. The live question count is shown on this page.

Can I study for Step 2 CK on my phone?

Yes. The Step 2 CK question bank is available on iOS and Android, with bookmarks and progress synced in real time so you can do clinical question blocks between rotations and study sessions.

USMLE Step 2 CK Question Bank 2026 | Clinical Practice Questions & Mocks

What Is the USMLE Step 2 CK Exam?

USMLE Step 2 Clinical Knowledge (CK) assesses your ability to apply medical knowledge and clinical science to patient care under supervision, with emphasis on health promotion and disease prevention. It is sponsored by the NBME and FSMB and is required for ECFMG certification and US residency.

It is a one-day, roughly 9-hour exam of up to 318 multiple-choice questions in eight blocks — almost all clinical vignettes testing diagnosis, investigation and management.

💡 The score that now matters most

With Step 1 reported pass/fail, residency programs lean heavily on the Step 2 CK three-digit score as the key objective metric. A strong CK score is one of the highest-leverage things you can do for a competitive application.

USMLE Step 2 CK Format

Step 2 CK is longer than Step 1 — pacing across eight blocks is essential.

The Exam

Clinical Vignettes

QuestionsUp to 318

Blocks8 × up to 40

Time / block60 minutes

Total time~9 hours

Single-best-answer clinical vignettes focused on diagnosis, next best step and management.

Result

Three-Digit Score

ReportingNumeric score

Minimum passLow 200s

WeightHigh (post Step 1)

Largest shareInternal medicine

A scored exam — aim well above the minimum, with targets set by your specialty's competitiveness.

✓ Master the "next best step"

Step 2 CK lives on next-best-step decisions. Practising why one management option beats another — not just the diagnosis — is exactly what separates an average score from a standout one.

USMLE Step 2 CK High-Yield Areas

Coverage spans the core clinical disciplines, with internal medicine the largest single share.

Highest-Yield Disciplines

Internal Medicine: the largest block — cardiology, pulmonology, GI, nephrology, endocrine, ID and more.
Surgery & Emergency: acute abdomen, trauma principles, peri-operative care, the unstable patient.
Pediatrics: development, vaccination schedules, common and dangerous childhood presentations.
Obstetrics & Gynecology: antenatal care, obstetric emergencies, contraception, gynecologic oncology basics.
Psychiatry: diagnosis, first-line pharmacology, risk and capacity.
Preventive Medicine & Ethics: screening, biostatistics in practice, consent and professionalism.

💡 Management over mechanism

Where Step 1 rewarded mechanism, Step 2 CK rewards guideline-based management: who to screen, what to order next, when to treat and when to refer. Train that judgment with vignette practice.

How to Prepare for USMLE Step 2 CK

Many candidates use a 4–8 week dedicated period, building on rotation experience. See our USMLE guides on the MedLumen blog.

Week 1–2 · Internal Medicine Core

Anchor on the biggest block first

Internal medicine is the largest share of the exam. Work it system by system in timed blocks, reviewing the next-best-step logic in every explanation.

Week 3–4 · Specialties Sweep

Surgery, peds, OB/GYN, psychiatry

Cover the remaining disciplines in focused blocks. Let analytics surface weak areas and re-drill them, keeping a running list of guideline thresholds (screening ages, treatment cut-offs).

Week 5–6 · Full Mocks

Timed, full-length practice exams

Sit full mocks to build 9-hour stamina and benchmark your score trajectory. Each mock is a diagnostic — convert misses into targeted review.

Final Days · Sharpen

Bookmarks and weak areas only

Review your weakest disciplines and bookmarked items. No new content. Rest before a long exam day.

Why MedLumen for USMLE Step 2 CK?

🤖

AI Adaptive Selection

Questions that expose weak disciplines appear more often, so each block targets your largest score gains.

📊

Score-Trajectory Analytics

Track accuracy by discipline and watch your projected score climb as you prepare.

📱

iOS & Android App

Practise on the iOS app or Android app, synced across devices.

📋

Full-Length Mocks

Nine-hour-style timed mocks to build endurance and benchmark your score.

📖

Next-Best-Step Explanations

Every answer explains the management reasoning, not just the diagnosis.

🔄

Unlimited Resets

Reset and re-run the bank as many times as you need before test day.

USMLE Step 2 CK Curriculum Coverage

The question bank spans every core discipline. Explore by area:

Internal Medicine Obstetrics & Gynecology Patient Safety & Quality Improvement Pediatrics Preventive Medicine Psychiatry Surgery

USMLE Step 2 CK Question Bank Pricing

All plans include full access to the Step 2 CK question bank, mock tests and the AI analytics dashboard. Start free — no credit card required.

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7 days full access

Full Step 2 CK bank
All core disciplines
Mock tests included
AI analytics
iOS & Android app

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Best Value

3 Month Access

$34.99

full 3-month access

Full Step 2 CK bank
Unlimited mock tests
Score-trajectory analytics
iOS & Android app
Unlimited progress resets

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1 Year Access

$99.99

full 12-month access

Full Step 2 CK bank
Unlimited mock tests
Score-trajectory analytics
iOS & Android app
Covers a full prep year

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Ideal for long-runway prep

Frequently Asked Questions About USMLE Step 2 CK

What is the USMLE Step 2 CK exam?

Step 2 Clinical Knowledge tests applying medical knowledge to patient care under supervision, emphasising diagnosis, management and prevention. Sponsored by NBME/FSMB, it's required for ECFMG certification and US residency.

Is Step 2 CK scored?

Yes — it reports a three-digit numeric score. Since Step 1 went pass/fail, programs weigh the CK score heavily, making it one of the most important objective application metrics.

How many questions and how long?

Up to 318 questions in eight 60-minute blocks, about 9 hours including breaks. Mostly clinical vignettes.

What disciplines does it cover?

Internal medicine (largest share), surgery, pediatrics, OB/GYN and psychiatry, plus emergency and preventive medicine and ethics. Management and next-best-step reasoning run throughout.

What's a good Step 2 CK score?

There's a minimum pass (currently in the low 200s), but competitive targets depend on your specialty. Many aim well above the mean. Practice-test performance is the best predictor.

How long should I prepare?

Usually 4–8 weeks dedicated, building on rotations, using timed question blocks, full explanation review and full-length mocks.

How is it different from Step 1?

Step 1 is integrated basic science and pass/fail; Step 2 CK is clinical decision-making and scored. CK rewards guideline-based management and next-best-step logic.

Is there a free Step 2 CK trial?

Yes — a 7-day free trial with full access to the bank, mocks and analytics, no card required.

Can I study on my phone?

Yes. The Step 2 CK bank is on iOS and Android with real-time sync, so you can practise between rotations and study blocks.

Start Your USMLE Step 2 CK Preparation Today

High-yield clinical vignettes, full mocks and score-trajectory analytics. Free 7-day trial.

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📚 Further Reading from MedLumen Blog

→ USMLE Step 1 Study Plan for IMGs: 3, 6 & 12-Month Schedules
→ All MedLumen exam preparation guides →