# What are the USMLE Vault MCQs and why are they so important?

> The USMLE Vault MCQs are 2,938 questions mapped to First Aid page by page, across 16 systems. Not a competitor to UWorld but its augmenter: the only MCQs that prepare you for UWorld, so it isn't the first time you see the concept.

URL: https://drmarishasudani.com/vault-mcqs
Canonical: https://drmarishasudani.com/vault-mcqs

## Questions this guide answers

- **What are the USMLE Vault MCQs?** 2,938 MCQs mapped to First Aid page by page, across 16 systems, inside the First Aid Guide. They are A tier on the qbanks list: not a competitor to UWorld but its augmenter, the only MCQs that prepare you for UWorld. You test each First Aid page the moment you read it, so UWorld isn't the first time you see the concept. 48% cold becomes 70% primed.
- **Are the USMLE Vault MCQs better than USMLE Rx?** For the job of preparing you for UWorld, yes. The Vault MCQs are page by page through First Aid, across 16 systems. USMLE Rx is topic by topic, doesn't cover every page of First Aid, and tests First Aid without teaching it. Before the Vault I recommended Rx; it wasn't as good as I wanted, so I built the Vault MCQs.

## Page text

USMLE Vault · Step 1 · Qbanks
What are the USMLE Vault MCQs, and why are they so important?
For IMGs who are scared of UWorld before they've even opened it.
By Dr. Marish Asudani · Published 26 October 2026
What are the USMLE Vault MCQs?
2,938 MCQs mapped to First Aid page by page, across 16 systems, inside the First Aid Guide. On my qbanks tier list they're A tier: not a competitor to UWorld, but its augmenter. They're the only MCQs that prepare you for UWorld, so UWorld isn't the first time you see the concept. 48% cold becomes 70% primed.
Read this first Most of the time, students are scared of UWorld's MCQs. And they have a reason: most students open UWorld on day 1, get 40%, and spiral.
That's not a UWorld problem. It's a sequence problem. UWorld is a learning and assessment tool, not a first-pass resource. The Vault MCQs are the step that comes before it.
1
What they are MCQs under the First Aid page you just read
First Aid was written to remind, not to teach. The First Aid Guide decodes it page by page, and at the bottom of the page comes Test Yourself : MCQs on that exact page . You read the page, then you test it, before you move on.
2,938 MCQs (as of October 2026), across 16 systems, mapped to First Aid page by page.
Every MCQ is a clinical vignette with 4 options. Tap to reveal the answer and its explanation.
Every MCQ has a trap box: why the tempting wrong option is tempting, so you learn the trap, not only the answer.
A Rule out button on every option strikes it through, the way you eliminate on UWorld. It isn't saved or scored. It's there to practise elimination.
MCQs per system · First Aid pages
Renal (free) 158 MCQs · pp. 596–628
Biochemistry 182 MCQs · pp. 32–92
Immunology 136 MCQs · pp. 94–119
Microbiology 302 MCQs · pp. 122–200
General Pathology 59 MCQs · pp. 202–225
General Pharmacology 69 MCQs · pp. 228–254
Public Health Sciences 97 MCQs · pp. 256–277
Cardiovascular 234 MCQs · pp. 284–328
Endocrine 185 MCQs · pp. 330–361
Gastrointestinal 246 MCQs · pp. 364–408
Heme-Onc 235 MCQs · pp. 410–448
Musculoskeletal 202 MCQs · pp. 450–498
Neurology 291 MCQs · pp. 500–569
Psychiatry 149 MCQs · pp. 570–594
Reproductive 235 MCQs · pp. 630–676
Respiratory 158 MCQs · pp. 678–706
Try the renal MCQs: renal is free All 158 renal MCQs, under the First Aid pages they test. Read a page, then test it.
Open renal →
Students who did this
Real students, in their own words, on the exact tools in this guide. Tap to play.
Dr. Rana · Passed Step 1 An honest review of USMLE Vault
Karthik · Passed Step 1 An honest review of USMLE Vault
Try a free 3-day trial → usmlevault.com · no card needed
2
Why they matter An augmenter, not a competitor
UWorld is the gold standard, and it stays your main qbank. The Vault MCQs don't compete with it. In my words: they are the only MCQs that prepare you for your qbank, which is UWorld . Not a competitor to the gold standard, but an augmenter.
They prepare you for the difficulty of UWorld's MCQs. Because you've already tested the system page by page, UWorld isn't the first time you see the concept.
Same block, same brain: 48% cold becomes 70% primed.
That's why they're A tier on the qbanks list, right under UWorld. The qbanks tier list →
3
How to use them Read the page, test the page, then UWorld
The MCQs aren't a separate qbank you open on a free afternoon. They're the last step of reading a page.
Read 1 page in the First Aid Guide: Focus On, the concept walkthrough, the ELI5, the page itself. Understand it, don't memorise it.
Do that page's Test Yourself MCQs straight after, then move to the next page.
End every day on the MCQs for that day's pages, the same night, not on a video. Target 70%+.
On a Sketchy Micro day, do that day's micro MCQs the same night.
Then the rest of the system: Mehlman, the FA Foundation Anki, and UWorld for that system in tutor mode, blocks of 20, solved with RPSR.
By the time you open UWorld, you've attacked the system from 4 angles. You're not starting UWorld cold.
How to read First Aid → · Renal in 6 days → · The RPSR method →
4
Why I built them Before the Vault, I recommended USMLE Rx
Before the Vault, I used to recommend USMLE Rx. It turned out Rx wasn't as good as I wanted it to be, so I created my own resource .
Vault MCQs vs USMLE Rx
Order Vault: page by page. Rx: topic by topic.
Coverage Vault: mapped to First Aid page by page, across 16 systems. Rx: doesn't cover every page of First Aid.
Teaching Vault: the page is taught right above its MCQs. Rx: tests First Aid without teaching it.
That's why Rx is C tier: too expensive for not even being your primary qbank, and for the job it does, there's a better alternative. 4 resources I'd never use again →
5
What they are not Not a replacement for UWorld
The Vault MCQs get you ready for UWorld. They don't replace it. UWorld is still your main qbank : system by system, tutor mode, never cold, blocks of 20, at least 2 blocks a day.
Biostats and ethics: AMBOSS, not UWorld. Biostats and ethics →
Measuring where you are: the NBMEs, offline, in blocks of 20. NBMEs offline →
Open the First Aid Guide First Aid taught page by page, with the MCQs underneath. Free for your first 3 days.
Open the MCQs →
Every page's MCQs, on a schedule
Want a day-by-day schedule that tells you exactly what to study next? The Vault builds it around your exam date.
Build my schedule on usmlevault.com/schedule →
2,938 MCQs, page by page through First Aid.
Read the page, test the page, walk into UWorld ready. Renal is free.
Open the First Aid Guide →
usmlevault.com · free for your first 3 days
Read next
The qbanks tier list — UWorld, AMBOSS, the Vault, Rx.
What the First Aid Guide is — every page, decoded.
ELI5, Test Yourself and Rule out — how every page teaches.
The RPSR method — how to do UWorld.
Renal, start to finish, in 6 days — the free system, run properly.
USMLE Vault · What are the USMLE Vault MCQs · Created 2026-10-26
USMLE Vault
Try the Vault free for 3 days Start free trial

## Source

USMLE Vault — https://usmlevault.com
Author: Dr. Marish Asudani

Updated: 2026-10-26