USMLE Step 1 Paper Pattern 2026
USMLE Step 1 is a paper of 100 MCQs to be attempted in 480 minutes, set by NBME / FSMB (ECFMG for international graduates), with no negative marking. It covers 6 subjects: Pathology, Physiology, Pharmacology, Microbiology, Biochemistry and General Anatomy.
100
MCQs
on the paper
480
Minutes
total time
288
Seconds per MCQ
if paced evenly
No
Negative marking
guessing is free
USMLE Step 1 subject weightage 2026
How many MCQs each subject contributes to the USMLE Step 1 paper. This is the order to revise in. Pathology is worth 25 MCQs against General Anatomy's 12, so an hour spent fixing a weak chapter in Pathology is worth more marks than the same hour anywhere else on the paper.
- USMLE Step 1 Pathology25 MCQs · 25%
- USMLE Step 1 Physiology20 MCQs · 20%
- USMLE Step 1 Pharmacology17 MCQs · 17%
- USMLE Step 1 Microbiology13 MCQs · 13%
- USMLE Step 1 Biochemistry13 MCQs · 13%
- USMLE Step 1 General Anatomy12 MCQs · 12%
| Subject | MCQs | Share | Free MCQs here |
|---|---|---|---|
| USMLE Step 1 Pathology MCQs | 25 | 25% | 289 |
| USMLE Step 1 Physiology MCQs | 20 | 20% | 437 |
| USMLE Step 1 Pharmacology MCQs | 17 | 17% | 476 |
| USMLE Step 1 Microbiology MCQs | 13 | 13% | 452 |
| USMLE Step 1 Biochemistry MCQs | 13 | 13% | 393 |
| USMLE Step 1 General Anatomy MCQs | 12 | 12% | - |
| Total | 100 | 100% | 2,047 |
USMLE Step 1 marking scheme 2026
Every USMLE Step 1 MCQ carries one mark, for a total of 100 marks, one per question. Nothing is deducted for a wrong answer, so an unanswered question and a wrong answer score exactly the same: zero. That makes leaving anything blank a pure loss. Attempt all 100 MCQs, and in the last few minutes fill in every remaining bubble even if you are guessing outright.
USMLE Step 1 time per subject
480 minutes across 100 MCQs is about 288 seconds a question. Split by weightage, that is the time each subject is worth. Going over on one subject is borrowed from another, not from spare time, because there is none.
| Subject | MCQs | Minutes |
|---|---|---|
| Pathology | 25 | 120 |
| Physiology | 20 | 96 |
| Pharmacology | 17 | 82 |
| Microbiology | 13 | 62 |
| Biochemistry | 13 | 62 |
| General Anatomy | 12 | 58 |
How to prepare for the USMLE Step 1 2026 pattern
The pattern tells you where the marks are, not where you are losing them. Start with Pathology, because it carries 25 percent of the paper and a weak chapter there is the most expensive weak chapter you can have. Inside each subject, work chapter by chapter and stay on a chapter until you are consistently above 80 percent before moving on.
Then practise at the real pace. Untimed revision hides the problem that actually costs marks in the hall, which is spending three minutes on a question worth 288 seconds and running out of paper before you run out of time. Sit full papers under the clock, and mark them honestly.
USMLE Step 1 paper pattern: common questions
What is the USMLE Step 1 paper pattern 2026?
USMLE Step 1 is a 100 MCQ paper of 480 minutes set by NBME / FSMB (ECFMG for international graduates), with no negative marking. It is split across 6 subjects: Pathology 25, Physiology 20, Pharmacology 17, Microbiology 13, Biochemistry 13, General Anatomy 12.
How many MCQs are there in USMLE Step 1?
100 MCQs in total, to be attempted in 480 minutes. The heaviest subject is Pathology at 25 MCQs, which is 25 percent of the paper.
Is there negative marking in USMLE Step 1?
No. USMLE Step 1 has no negative marking, so a wrong answer costs you nothing more than an unanswered one. Never leave a question blank: attempt every one of the 100 MCQs, even the ones you are guessing on.
How much time do you get per MCQ in USMLE Step 1?
480 minutes for 100 MCQs works out at about 288 seconds per question. That is the pace to practise at, and it is why timed practice matters more than untimed revision in the last month.
Which subject has the most weightage in USMLE Step 1?
Pathology, at 25 of the 100 MCQs, which is 25 percent of the paper. A weak topic in the heaviest subject costs you more marks than a weak topic anywhere else, so the weightage order on this page is the order worth revising in.