The USMLE Step 1 is the first of the three United States Medical Licensing Examination exams, and as of 2026 it is a one-day, pass/fail test of the basic sciences that underpin medicine. You answer up to 280 multiple-choice questions across 14 half-hour blocks in an eight-hour appointment at a Prometric test center.
Nearly every US medical student has to pass it to move on to clinical training, and international graduates take it as part of qualifying for US residency. Since January 2022 there is no three-digit score anymore, only a pass or fail. This guide walks through the format, what Step 1 actually tests, how it is scored, who is eligible, what it costs in 2026, and where it sits in the licensing path, all checked against the official Step 1 page at usmle.org.
- Step 1 is a one-day, pass/fail exam covering the basic sciences behind clinical medicine, taken mostly by US MD and DO students and international medical graduates.
- The format is up to 280 questions split into 14 blocks of 30 minutes, inside an eight-hour appointment. This block structure took effect May 14, 2026.
- Scoring is pass/fail only since January 26, 2022. The minimum passing standard is 196 on the old three-digit scale, but that number is no longer reported to you.
- The 2026 registration fee is $695, plus a $210 region fee for testing outside the US and Canada.
- Step 1 is step one of three: Step 1, then Step 2 CK, then Step 3, each taken at a different stage of training.
USMLE Step 1 at a glance, current for 2026. Source: usmle.org (verified July 2026).
What is the USMLE Step 1?
The USMLE Step 1 is the first exam in the sequence US physicians must pass to become licensed. It checks whether you understand and can apply the sciences basic to the practice of medicine, with emphasis on the principles and mechanisms behind health, disease, and treatment, according to the USMLE Step 1 overview.
The word most people miss is "apply." Step 1 is not a straight memorization quiz. The content outline says the majority of questions require you to interpret graphs and tables, identify normal and abnormal specimens, and solve problems using basic science principles. Questions are built from an integrated outline organized along two dimensions, system and process, so a single item can pull together physiology, pathology, and pharmacology inside one clinical vignette.
Step 1 is co-sponsored by the National Board of Medical Examiners (NBME) and the Federation of State Medical Boards (FSMB), and it is delivered at Prometric test centers. It is the exam students usually mean when they talk about "boards," and for years it carried enormous weight in residency selection. That changed when it went pass/fail, which we cover below.
How many questions are on USMLE Step 1?
Step 1 has up to 280 multiple-choice questions, and no single form will exceed that number. As of the software update effective May 14, 2026, those questions are split into 14 blocks of 30 minutes, with no more than 20 questions per block, per the USMLE test-delivery update.
The whole appointment runs about eight hours. Beyond testing time you get a minimum of 55 minutes of break time and a 5-minute optional tutorial. Finishing a block or the tutorial early rolls the leftover time into your break bank, so working efficiently buys you more rest later. One rule catches people off guard: once you close a block, you cannot go back to it. You can flag and review items inside the block you are on, but previous blocks are locked.
That structural change is the biggest recent format shift, and a lot of third-party articles still quote the old seven-block layout. The content, the item cap, and the length are the same; only the block sizing moved.
What does USMLE Step 1 test?
Step 1 organizes its content around organ systems, physician tasks, and academic disciplines. You are not tested on trivia in isolation; you are tested on foundational science in the context of disease. Here is roughly how the exam weights the organ systems, from the official content specifications:
| Content area (system) | Share of exam |
|---|---|
| Reproductive & Endocrine Systems | 12–16% |
| Respiratory & Renal/Urinary Systems | 11–15% |
| Behavioral Health & Nervous Systems | 10–14% |
| Blood & Lymphoreticular/Immune Systems | 9–13% |
| Cardiovascular System | 7–11% |
| Biostatistics & Epidemiology | 4–6% |
Foundational science is not a separate section. It is spread across every organ system based on the disease process being tested. On top of the systems, each question is tagged to a physician competency. The biggest by far is Medical Knowledge, applying foundational science concepts, at 60–70% of the exam, followed by Patient Care: Diagnosis at 20–25%.
By traditional discipline, Step 1 leans heaviest on pathology (45–55%) and physiology (30–40%), with pharmacology, microbiology, anatomy, biochemistry, immunology, and genetics filling in the rest. Because items are deliberately integrative, one question is often classified under several disciplines at once, which is why the discipline percentages add up to more than 100. The practical takeaway: broad, connected understanding beats narrow fact-cramming, because the test rewards pulling concepts together.
How is USMLE Step 1 scored?
Step 1 is reported as pass or fail only. There is no three-digit score for exams taken on or after January 26, 2022, per the USMLE scoring page. Behind the scenes, the passing standard is 196 on the old scale, but your report simply states whether you cleared it.
This is the single most important thing to understand about modern Step 1. Because there is no number to maximize, residency programs shifted the weight they used to put on Step 1 onto Step 2 CK, which is still scored. Passing Step 1 is now a gate you clear, not a trophy you chase. That does not make it easy, though. First-time pass rates actually fell after the switch, and you can see the full breakdown in our data study on USMLE Step 1 pass rates, where 2024 first-time rates were 91% for US MD students, 86% for US DO students, and 73% for international graduates. Results are typically available two to four weeks after your test date.
Who takes USMLE Step 1, and who is eligible?
Three groups are eligible to sit Step 1, according to the USMLE eligibility rules:
- US MD students and graduates from a school accredited by the Liaison Committee on Medical Education (LCME).
- US DO students and graduates from a school accredited by the Commission on Osteopathic College Accreditation (COCA).
- International medical graduates (IMGs) enrolled in or graduated from a school listed in the World Directory of Medical Schools who meet ECFMG eligibility standards.
You register through a specific entity depending on your school. US MD and DO students apply through NBME; students and graduates of schools outside the US apply through FSMB at usmle.fsmb.org. International graduates still need ECFMG Certification to enter residency and to become eligible for Step 3, so for IMGs, ECFMG certification and the Step exams run in parallel.
Timing varies. Traditionally, US students take Step 1 after their preclinical or foundational-science years, before or during clinical rotations. Attempts are capped: you cannot take a Step more than three times in a 12-month period, and if you have attempted it four or more times, including incomplete attempts, without passing, you become ineligible for the entire USMLE sequence. That four-attempt ceiling is a real reason to treat your first sitting as your best shot.
How much does USMLE Step 1 cost in 2026?
The Step 1 application fee is $695 for 2026 and 2027, whether you apply through NBME or FSMB, per the USMLE application page. If you test outside the United States and Canada, add a $210 region fee, which brings the total to $905. India-based testing carries an additional 18% government tax.
That fee only covers registration and delivery. It does not include prep, which is where most of your real spending goes. NBME co-sponsor programs offer a Fee Assistance option for examinees with demonstrated financial need, which can offset the registration cost. Before you spend on question banks and courses, it is worth mapping the free Step 1 resources first, since several of the tools top scorers rely on cost nothing.
Where does Step 1 fit in the path to medical licensure?
Step 1 is the first of three USMLE exams, and you take them at different stages of training. Step 1 covers foundational science, Step 2 CK covers clinical knowledge, and Step 3 covers the management decisions of an unsupervised physician.
The three-exam USMLE sequence and when each is usually taken. Source: usmle.org (verified July 2026).
In practice, a typical US student passes Step 1 after the basic-science phase, takes Step 2 CK during or after core clinical clerkships, and then sits Step 3 during the first year of residency. Step 2 CK and Step 3 remain scored with three-digit results, which is why Step 2 CK now carries the numeric weight Step 1 used to. For international graduates, ECFMG Certification is required before Step 3. Understanding this order matters for planning: Step 1 is the foundation the later exams build on, so the science you lock down here keeps paying off.
How should you prepare for Step 1?
Because Step 1 rewards applied understanding over rote recall, most students build their plan around a large question bank plus a spaced-repetition and review layer. Every pick below is rated against our documented review methodology, not who pays us.
- A thorough question bank. Working UWorld's Step 1 question bank and reading every explanation is the most reliable readiness driver, because it trains the applied reasoning the exam tests.
- A shared outline. First Aid for the USMLE Step 1 is the reference the whole ecosystem maps to; annotate it as you learn.
- Pathology video review. Pathoma is the standard for the pathology that makes up the largest discipline slice of the exam.
- Spaced repetition. The free AnKing Step Deck keeps thousands of facts from slipping.
- Official practice. Timed NBME practice tests and the Free 120 are the closest read on your real readiness.
If you want the full picture of tools across every category, the USMLE resource hub reviews the main options side by side.
Frequently asked questions
How many questions are on USMLE Step 1?
Step 1 has up to 280 multiple-choice questions. As of May 14, 2026, they are delivered in 14 blocks of 30 minutes, with no more than 20 questions per block. The number of questions per block can vary by exam form, but the total never exceeds 280 items across the day.
Is USMLE Step 1 pass or fail?
Yes. Step 1 has been reported as pass/fail only since January 26, 2022. You do not receive a three-digit score, only a pass or fail outcome. The underlying minimum passing standard is 196 on the old scale, but that number is not shown on your score report.
How long is the USMLE Step 1 exam?
Step 1 is a one-day exam with an appointment of about eight hours. That includes 14 thirty-minute question blocks, a minimum of 55 minutes of break time, and a 5-minute optional tutorial. Finishing blocks or the tutorial early adds the unused time to your available breaks.
How much does USMLE Step 1 cost?
The 2026 and 2027 application fee is $695 through NBME or FSMB. Testing outside the United States and Canada adds a $210 region fee, for a total of $905. That covers registration and delivery only, not prep materials, and does not include any state or local taxes.
Who takes USMLE Step 1?
US MD students from LCME-accredited schools, US DO students from COCA-accredited schools, and international medical graduates from schools in the World Directory of Medical Schools who meet ECFMG standards. US students usually take it after their preclinical years; international graduates take it as part of qualifying for US residency.
Is Step 1 or Step 2 CK more important now?
Both matter, but their roles differ. Step 1 is a pass/fail gate you must clear. Step 2 CK is still scored, so since Step 1 dropped its numeric score, residency programs now put more weight on the Step 2 CK number when comparing applicants.
Sources
- Step 1 Overview (usmle.org)
- Step 1 Content Outline & Specifications (usmle.org)
- Test Delivery Software Updates Coming May 2026 (usmle.org)
- Examination Results & Scoring (usmle.org)
- Apply for Exams and Fees (usmle.org)
- Eligibility (usmle.org)
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