Over 1,000 practice MCQs for USMLE Step 2 Clinical Knowledge. Adaptive AI-powered question selection, spaced repetition, and detailed explanations aligned with the NBME exam blueprint.
Comprehensive US-focused clinical vignettes — AHA/ACC, ACOG, AAP, USPSTF guidelines
The United States Medical Licensing Examination (USMLE) Step 2 Clinical Knowledge (CK) is a standardized examination administered by the National Board of Medical Examiners (NBME) and the Federation of State Medical Boards (FSMB). It is a critical component of the medical licensing process in the United States.
Step 2 CK assesses whether medical students and graduates can apply medical knowledge, skills, and understanding of clinical science essential for the provision of patient care under supervision. The exam emphasizes health promotion, disease prevention, diagnosis, and management of acute and chronic conditions.
The exam is required for medical licensure in all US states and territories. It is taken by US and Canadian medical students (typically in their fourth year) and by international medical graduates (IMGs) seeking ECFMG certification for entry into US residency programs.
Step 2 CK is administered year-round at Prometric testing centers across the United States and at select international locations. The exam fee is approximately $700 USD (as of 2026). Scores are typically released 3-4 weeks after the test date.
318 MCQs across 8 blocks with breaks in between. Know exactly what to expect.
US/Canadian Medical Students: Typically taken in the fourth year of medical school. Register through NBME and schedule at Prometric.
International Medical Graduates (IMGs): Must apply through ECFMG. ECFMG certification requires passing Step 1, Step 2 CK, and meeting other requirements.
Registration Steps:
Source: usmle.org. Verify details before registering.
Approximate weighting of subjects on Step 2 CK per NBME content outline. AiMedQs covers all these areas.
Ischemic heart disease, heart failure, arrhythmias, valvular disease, hypertension management per AHA/ACC guidelines
Stroke, seizures, headache, movement disorders, ophthalmology, ENT conditions, neurodegenerative diseases
GERD, PUD, IBD, hepatobiliary disease, GI bleeding, pancreatic disorders, colorectal cancer screening
Asthma, COPD, pneumonia, TB, pleural disease, lung cancer, pulmonary embolism, sleep apnea
Acute and chronic kidney disease, electrolyte disorders, UTI, STDs, contraception, sexual dysfunction
Arthritis, fractures, soft tissue injuries, dermatology, rheumatologic conditions, osteoporosis
Depression, anxiety, psychosis, substance use disorders, eating disorders, personality disorders per DSM-5
Diabetes, thyroid disorders, adrenal disease, pituitary conditions, metabolic syndrome
Prenatal care, high-risk pregnancy, labor management, postpartum care per ACOG guidelines
Anemia, coagulopathies, transfusion medicine, lymphoma, leukemia, thrombotic disorders
HIV/AIDS, immunodeficiency, autoimmune diseases, transplant medicine, vaccine-preventable diseases
Normal development, developmental milestones, aging, health maintenance across the lifespan
Sepsis, shock, trauma, poisoning, environmental injuries, multiorgan failure
Study design, statistical tests, screening tests, diagnostic testing, evidence interpretation
Informed consent, confidentiality, end-of-life care, medical errors, quality improvement, HIPAA, EMTALA
For the most current eligibility criteria, visit usmle.org or ecfmg.org (for IMGs).
An intelligent study platform built for USMLE Step 2 Clinical Knowledge.
Questions mapped to the NBME Step 2 CK content outline. Covers all tested subjects with appropriate weighting per the official blueprint.
Clinical scenarios reflect US healthcare practice — American English, US units (mg/dL), US drug names, Medicare/Medicaid, HIPAA, EMTALA framework.
Our AI engine identifies your weakest subjects and prioritizes questions in those areas. Study smarter, not just harder.
Questions aligned with AHA/ACC, ACOG, AAP, APA, USPSTF, IDSA, and other US-specific clinical practice guidelines.
Missed questions return at scientifically optimized intervals. This evidence-based technique ensures long-term retention of high-yield concepts.
Track accuracy by subject, identify trends, and see exactly where you need more practice before exam day.
Our question bank is continuously growing. Fresh, high-quality MCQs are added regularly to keep your practice current and comprehensive.
USMLE Step 2 CK is not a generic medical knowledge test. It assesses clinical knowledge specifically in the context of US healthcare practice. Generic international question banks miss these critical differences:
AHA/ACC (cardiology), ACOG (ob/gyn), AAP (pediatrics), APA (psychiatry/DSM-5), USPSTF (screening), IDSA (infectious disease) — not NICE or WHO.
HIPAA, EMTALA, informed consent standards, advance directives, end-of-life care per US law, Medicare/Medicaid regulations.
American drug names (acetaminophen, not paracetamol; epinephrine, not adrenaline), US units (mg/dL, not mmol/L), US dosing conventions.
Insurance (Medicare, Medicaid, private), prior authorization, managed care, US-specific preventive care schedules, vaccination schedules per CDC.
AiMedQs questions are specifically crafted to reflect US clinical guidelines, US medical terminology, US units of measurement, and US healthcare context — ensuring your preparation matches what you'll actually encounter on exam day.
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USMLE Step 2 Clinical Knowledge (CK) is the second of three United States Medical Licensing Examinations administered by the National Board of Medical Examiners (NBME). It assesses whether medical students and graduates can apply medical knowledge, skills, and understanding of clinical science essential for patient care under supervision. It is required for medical licensure in the United States.
Step 2 CK consists of 318 multiple-choice questions divided into 8 blocks of approximately 40 questions each. Each block has 60 minutes. The exam is administered over one day (~9 hours including breaks) at Prometric testing centers. Questions are single best answer format with 5 options. The exam is computer-based.
As of July 2025, the minimum passing score for Step 2 CK is 218 on a three-digit scale. Scores are reported numerically (1-300 range) with pass/fail determination. The NBME periodically reviews and may adjust the passing standard based on standard-setting studies.
Most US medical students take Step 2 CK during their fourth year of medical school, often before residency applications or interviews. International medical graduates (IMGs) typically take it as part of ECFMG certification requirements. Timing varies based on individual preparation and residency application strategy.
Eligibility includes: graduates of LCME-accredited US or CACMS-accredited Canadian medical schools, students in their final year at these schools, and international medical graduates (IMGs) who are ECFMG-certified or in the process of certification. Registration is through the NBME, and IMGs must apply through ECFMG.
Step 1 focuses on basic sciences and foundational mechanisms. Step 2 CK emphasizes clinical knowledge, diagnosis, and management of common conditions in supervised practice settings. Step 3 assesses readiness for unsupervised practice and includes computer-based case simulations. Step 2 CK is purely multiple-choice clinical vignettes.
IMGs must obtain ECFMG certification to enter US residency programs. This requires passing Step 1, Step 2 CK, and Step 2 CS (now discontinued; requirements updated). IMGs register through ECFMG and can take Step 2 CK at Prometric centers in the US or at select international locations. ECFMG certification is required for residency matching.
AiMedQs provides over 1,000 Step 2 CK practice questions aligned with the NBME exam blueprint. Our platform uses adaptive AI-powered question selection to focus on your weak areas, spaced repetition for long-term retention, and detailed performance analytics. Questions reflect US clinical guidelines (AHA/ACC, ACOG, AAP, USPSTF, etc.) and use American English, US units, and US drug names.
Yes, you can retake Step 2 CK. There is a limit of three attempts per 12-month period and six attempts total. A failing score remains on your transcript and is reported to residency programs. Given the registration fees (~$700) and the impact on residency applications, thorough first-attempt preparation is strongly recommended.
AiMedQs currently offers over 1,000 Step 2 CK-specific practice questions covering all subjects tested on the exam. Our question bank is continuously updated with new content reviewed by US-trained medical professionals and aligned with current US clinical practice guidelines.
Over 1,000 practice questions with US clinical context. AI-powered. Start studying today.
Try 30 Questions FreeAiMedQs is an exam preparation tool and does not guarantee exam results. Content is for educational purposes only. AiMedQs is not affiliated with or endorsed by the National Board of Medical Examiners (NBME) or USMLE. For official exam information, visit usmle.org.