Included with your account · Works offline
USMLE Step 1 Practice Exam — with an explanation for every answer
Original questions mapped to the official exam content outline. Answer each question and see immediately why the right answer is right — and why each wrong answer is wrong.
30
verified questions
4
outline chapters
5
quizzes + final
100%
answers explained
Study by chapter
Work through the exam's official outline one chapter at a time, then prove it on the final test.
Chapter 1
Cardio-Pulm-Renal
Cardiovascular, Respiratory & Renal/Urinary Systems
8 questions · 1 chapter quiz · ~12 min
Chapter 2
GI-Endo-Repro-Nutrition
Gastrointestinal, Reproductive, Endocrine & Nutrition
8 questions · 1 chapter quiz · ~12 min
Chapter 3
Heme-Immune-MSK-Multisystem
Blood/Immune, Musculoskeletal/Skin & Multisystem Pathology
8 questions · 1 chapter quiz · ~12 min
Chapter 4
Neuro-Behavioral-Biostats
Nervous System, Behavioral Science, Development & Biostatistics
6 questions · 1 chapter quiz · ~9 min
Final test · 30 questions
Full USMLE Step 1 diagnostic
Every chapter, weighted like the real exam, with your score broken down by domain.
Final test
Loading…
AI practice — drill where you're weak
Every quiz you take teaches the drill where you're leaking points. It picks each next question live — your missed questions and weakest domains first.
AI weak-spot drill
10 questions, chosen live: the drill reads every USMLE Step 1 quiz you've taken, finds the domains where you miss, and serves you more questions exactly there — re-testing old misses first.
Flying soon? Save every live course to this device and study without internet.
About this diagnostic
The real USMLE Step 1 exam: Up to 280 items in 7 blocks · one day · reported pass/fail. This diagnostic samples every domain of the official outline in its real proportions, so your score breakdown shows where to focus first.
Every question is original, written from the published outline and public primary sources, and human-reviewed before publication — PrepTempo never reproduces actual exam content.
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME), neither of which is affiliated with this site or endorses this product.