USMLE Vault · Step 1 · Renal
Renal, Start to Finish, in 6 Days
33 First Aid pages · 11 organisms · 3 drug groups · 6 days. Every renal page is free on USMLE Vault. Here is exactly what to do with it.
Why this page exists.
Dr. S always struggled with renal. He told me so himself. This week he sent me two UWorld renal blocks.
85%
Block 1 · average on that block 64%
95%
Block 2 · average on that block 62%
"I've always struggled with renal, so I'm really happy that it's becoming much clearer and easier for me to recall, and I'm seeing better scores. Your method really works and I will keep moving forward."
This is the method he used. Every step, in order.
The 6 days at a glance
Renal is done in one fixed order: the organisms and drugs first, then active reading, then active application, then active recall, and only then UWorld. Every step hits the same 33 pages of First Aid from a different angle.
| Day | What | With |
|---|
| Day 1 | Micro + Pharm of renal | The Micro and Pharm pills on Renal · WRWRT and FWRT |
| Day 2 | Active reading · pp. 596–611 | First Aid Guide · embryology to acid-base |
| Day 3 | Active reading · pp. 612–628 | First Aid Guide · glomerular disease to diuretics |
| Day 4 | Active application | Mehlman Medical renal videos |
| Day 5 | Active recall | FA Foundation Anki · Renal, page by page |
| Day 6 | UWorld renal | The RPSR method · 20-question tutor blocks |
This is the RPSR method, spread over 6 days. Read = Days 2–3.
Pre-solve = Days 2–5 (page MCQs, Mehlman, Anki).
Solve and
Review = Day 6. Full method:
The RPSR Method.
Day 1
Micro and Pharm of renal — from the pills
Open the First Aid Guide → Renal. You will see two pills: Micro and Pharm. Each opens the exact renal list, and nothing else. Do both today.
🦠
Micro · 11 organisms · the WRWRT method. Watch the sketch at 1x with no notes →
Recall the whole story in your head, in order →
Watch again only the gaps at 1.5–1.75x →
Read the Sketchy PDF for that organism →
Test with the First Aid Guide MCQs for that organism.
01 · E. coli
02 · Staph. saprophyticus
03 · Proteus mirabilis
04 · Klebsiella pneumoniae
05 · Enterococcus
06 · Pseudomonas aeruginosa
07 · Serratia marcescens
08 · Strep. agalactiae (Group B)
09 · BK virus
10 · Schistosoma haematobium
11 · Candida
Open Renal Micro → 💊
Pharm · 3 drug groups · the FWRT method. Find the resource (already done:
all 3 are Sketchy) →
Watch each video
twice, back to back →
Read the High-Yield Pharmacology PDF after all 3 and highlight only what did not survive →
Test in First Aid Guide → Renal → Pharmacology.
- 01 · Loop diuretics
- 02 · Thiazides
- 03 · Spironolactone and the K-sparing diuretics
Open Renal Pharm → Why micro and pharm first: when you reach cystitis and pyelonephritis on p. 619 and the diuretics on pp. 625–627, you meet them as old friends, not new facts. Never done Sketchy? Do the same lists from First Aid and the First Aid Guide alone. The list does not change, only the source.
Before Day 2: what the First Aid Guide is, and why you read it
First Aid was written to remind you, not to teach you. Every line assumes you already understand it. That is why students spend 3 hours on one page, Google half of it, and still retain nothing.
The First Aid Guide on usmlevault.com puts the teaching back into the page. Every renal page (pp. 596–628) has:
🎯
Focus On. What on this page is high-yield, and what to skip. On p. 596, the embryology timeline is low-yield; Potter sequence is the one concept that matters.
🧭
Concept Walkthrough. The page in the order you should think about it, so the box of text becomes a sequence.
🧠
ELI5. Each heading in plain English: the big idea, the story, the bridge to USMLE, and
the trap the exam sets.
What ELI5 is → ❓
How is this tested? Common Confusion → Core Concept → The Trap → Your Approach.
See a real page → ✅
Test Yourself MCQs on that exact page. 158 MCQs across renal, with a Rule-out button to practise elimination like UWorld.
Why it works: you understand the page, then prove it with MCQs in the same minute. 60–70% of UWorld traces straight back to First Aid lines, so a page you truly understood is a UWorld question you already own.
Days 2–3
Active reading — First Aid pp. 596–628
This is not reading. Active reading means that for every page you explain it, understand it, and do it. You do not move to the next page until all three are done.
1
Read Focus On for the page. Now you know what matters.
2
Run the Concept Walkthrough and the ELI5s. Explain each heading back in your own words. If you cannot say it out loud, you have not understood it.
3
Read the actual First Aid page. It should now read like a summary of something you already know.
4
Solve the Test Yourself MCQs. This is where the knowledge gets applied. Any miss → back to that heading before you turn the page.
Pace: 10–12 minutes a page, 4–6 pages an hour. 16–17 pages a day is one honest study day, not a week. Do not memorise. Understanding is the only job on these 2 days.
Day 2 · pp. 596–611 · structure and physiology (16 pages)
| Pages | Topic |
|---|
| 596–599 | Embryology, Potter sequence, congenital anomalies, VUR, anatomy, fluid compartments, filtration barrier |
| 600–602 | Clearance, GFR, RPF, filtration fraction, FeNa, glucose clearance |
| 603–605 | Nephron transport, tubular defects, PCT concentrations |
| 606–608 | RAAS, JGA, kidney hormones, potassium shifts |
| 609–611 | Electrolytes, acid-base, anion gap, RTA |
Day 3 · pp. 612–628 · pathology and pharmacology (17 pages)
| Pages | Topic |
|---|
| 612–616 | Casts, nephritic vs nephrotic, each glomerular disease, Alport, MPGN |
| 617–619 | Stones, hydronephrosis, incontinence, cystitis, pyelonephritis |
| 620–622 | AKI, AIN, ATN, papillary necrosis, renal failure, osteodystrophy, cysts |
| 623–624 | Renovascular disease, RCC, renal tumours, bladder cancer |
| 625–628 | Diuretics by site, loops, thiazides, K-sparing, ACE inhibitors, ARBs, aliskiren |
Day 4
Active application — Mehlman Medical
You understand renal. Now learn how the exam asks it. Mehlman's renal videos take each high-yield topic and show you which clue rules an answer in, which one rules it out, and how to get from the stem to the answer.
1
Videos, not PDFs. Short ~5-minute videos. The value is the reasoning, and the PDFs do not have it.
2
The full renal playlist, in order, in one day. Not random clips. Watch the walkthrough in the
University section of the Vault first.
3
Watch for how he thinks, not for new facts. Pause before he answers and answer it yourself. Anything that exposes a gap → open that First Aid Guide page and fix it the same day.
Why: active reading gave you the facts.
Active application turns facts into decisions, which is the only thing a UWorld question asks for.
How to use Mehlman →
Day 5
Active recall — FA Foundation Anki, Renal
The FA Foundation Anki deck is First Aid, page by page. The Renal deck is about 140 cards, one high-yield point per card, and the First Aid page number is on every card.
1
Run the whole Renal deck today. Answer before you flip. Recognising a line and pulling it out of memory are different skills, and UWorld tests the second one.
2
Hesitate → open the page. Go to that page number in the First Aid Guide, read the line plus a couple of lines above and below, then return to the card.
Day 6
UWorld renal — the RPSR method
Now you open UWorld. You are not meeting renal here. You are proving you already own it.
| Setting | Choose |
|---|
| Questions | Unused |
| Subjects | All |
| Systems | Renal only |
| Mode | Tutor, untimed |
| Block size | 20 questions |
S
Solve. Do 2 blocks of 20. Bookmark every question you got wrong and every one you got right by guessing. Expect about 10 bookmarks a block.
R
Review in First Aid. For each bookmark, find the exact First Aid line it came from, highlight it, and read a couple of lines around it. No more than 5–6 minutes per question. Then the next 2 blocks.
Target: 65% or above. Dr. S scored 85% and 95% on blocks where the average was 64% and 62%. If your last 2 blocks are under 60%, go back to the Mehlman videos for those topics, then the First Aid pages behind them.
Renal is finished when every renal UWorld question is attempted, every miss is traced to its First Aid page, and your last 2 blocks held above 65%. Not when a date passes. Day 6 starts this; keep going until all three are true.
When is a system actually finished? →
What not to do
Do not open UWorld on Day 1. You will score 40%, decide you are bad at renal, and you are simply in the wrong order.
Do not read First Aid to memorise it. Days 2–3 are for understanding. Memory is Day 5's job.
Do not skip the page MCQs. If you cannot answer them, you read the page. You did not learn it.
Do not split renal across weeks. 6 days in a row. A half-done system behaves like an undone one.
Renal is free. Start with the system you fear most.
33 pages · 158 MCQs · ELI5 and walkthroughs on every page · the Micro and Pharm pills.
Open Renal free →