Free diagnostic
USMLE Step 3 Diagnostic Exam
30 questions drawn from the USMLE Step 3 question bank, weighted the way USMLE weights the real exam. You have 45 minutes. When you finish, you get your score, a breakdown by system, and the topics to study first.
No account. Your progress is saved in this browser, so you can leave and come back.
30 questions
45 minutes
12 systems
Free
Before you start
- The clock starts when you press the button and keeps running if you close the tab.
- Answer in any order. Flag a question to come back to it.
- There is no feedback until the end, the same as exam day.
- No calculator or reference is needed. Every question here has one correct answer and five choices, like a real Step 3 item. The case simulations are left out.
- This set covers 12 of the 14 systems. Renal, Urinary and Male Reproductive Systems and Human Development are the ones it skips.
All questions
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Your diagnostic report
0%
Score by system
Bars show your score in this set. The right column is the share of the real exam that comes from each category.
Study these first
Ranked by how much of the exam the area carries and how far below full marks you landed.
Turn the weak areas into points
PassExams has hundreds more USMLE Step 3 questions with worked solutions, and a study plan that starts from your weakest areas. The free tier gives you ten questions a day.
No card needed for the free tier
Review every question
Open any question to see your answer, the correct answer, and the worked solution. One question stays open at a time.
Questions people ask
Is this diagnostic the same length as the USMLE Step 3 exam?
No. The real exam runs over two days, with 412 questions in 21 blocks of 30 minutes plus 13 to 14 case simulations. This set has 30 questions in 45 minutes, which works out to about 2 minutes per question, the same pace as a real block.
How are the 30 questions chosen?
They come from the free sample of the PassExams USMLE Step 3 bank and follow the USMLE weights for each system. Areas that carry more questions on the real exam get more questions here.
Does a score here predict whether I will pass?
No single set of 30 questions can. Use it to find the areas that need work, then take it again after a few weeks of practice and compare the two reports.
Do I need an account?
No. Your answers stay in this browser and nothing is uploaded. You can save the report as an image when you finish.