USMLE Step 1 United States Medical Licensing Examination Practice Test

184 questions available

Build your confidence for USMLE Step 1 United States Medical Licensing Examination. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.

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184 Practice questions
3 hours 4 minutes Practice Time
Try 5 free questions
No account needed. A free account includes 20 questions for this exam.
The bank 184 Practice questions checked against the official objectives.
NBME (USMLE)184 practice questions
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Exam overview and details

USMLE Step 1 examination covering basic science foundations including anatomy, biochemistry, physiology, pharmacology, microbiology, and pathology for medical students. Administered by National Board of Medical Examiners. Key domains include Microbiology, Pharmacology, Genetics, Biostat (cross-cutting), Behavioral Health and Nervous System, Cardiovascular and Endocrine, Reproductive, Pregnancy.

Sample Questions

Choose an answer and explore the explanation to see how practice works.

Practice-Based Learning, Communication, Professionalism

A candidate has a USMLE Step 1 testing appointment scheduled for 8:00 AM. What is the earliest recommended arrival time at the test center to ensure smooth check-in?

Multisystem Processes & Disorders

A candidate reviewing the format of the traditional multiple-choice items on the USMLE Step 1 wants to know how many response options accompany the single question linked to each patient-centered vignette. Which description is correct?

Pulmonary

An investigator is designing a study to evaluate acupuncture for pediatric headache and enrolls 60 participants. Which of the following best characterizes the participants recruited for this study?

Practice-Based Learning, Communication, Professionalism

A physician who failed Step 2 CK requests a score recheck, hoping the recheck will involve an examiner manually re-reading the exam questions and her recorded answers. What does the recheck process actually provide?

Practice-Based Learning, Communication, Professionalism

A 16-year-old presents alone seeking contraception counseling and asks that her parents not be informed. The physician should be familiar with which of the following considerations before proceeding?

Exam insights and study advice

Mastery of the material tested on Step 1 is not merely an academic hurdle; it forms the essential scientific bedrock for all clinical decision-making. A deep understanding of pathophysiology, pharmacology, and microbiology, for example, directly informs accurate diagnosis, effective treatment planning, and patient safety. The exam's focus on foundational principles ensures that future physicians can adapt their knowledge to new diseases, evolving treatments, and complex patient presentations throughout their careers.

What this exam covers

Use the published domain weights to plan your study. Practice results do not predict your certification exam score.

01Microbiology, Pharmacology, Genetics, Biostat (cross-cutting)

13%

02Behavioral Health and Nervous System

10%

03Cardiovascular

9%

04Endocrine, Reproductive, Pregnancy

9%

05GI System

9%

06Hematology, Immune, Lymphoid

9%

07Pulmonary

9%

08Multisystem Processes & Disorders

5%

09Musculoskeletal, Skin, Connective

5%

10Practice-Based Learning, Communication, Professionalism

5%

11Renal/Urinary

5%

Frequently Asked Questions

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