USMLE Step 1 Exam Guide 2026: FREE Pass/Fail Plan + May 14 Format

Key Facts

USMLE Step 1 has been reported as pass/fail only since January 26, 2022; examinees no longer receive a numeric score, only Pass/Fail plus a performance profile if failed.
Step 1 administrations on or after May 14, 2026 use 14 blocks of 30 minutes with up to 20 questions per block, replacing the legacy 7-block x 60-minute format.
Total Step 1 items (up to 280) and 8-hour session length are unchanged in 2026; only the block structure and tutorial/break allotments change.
The 2026 USMLE Step 1 exam fee is $695 for US/Canadian MD/DO candidates; IMGs pay the same plus a $210 international surcharge and separate ECFMG fees.
NBME limits candidates to 4 total attempts per USMLE Step with no more than 3 attempts per 12-month period across all Steps; 4 failures equals permanent ineligibility.
USMLE Step 1 weights physician tasks at 60-70% Medical Knowledge, 20-25% Patient Care: Diagnosis, 6-9% Communication and Interpersonal Skills, and 4-6% Practice-based Learning (USMLE).
USMLE Step 1 has 11 weighted system categories, ranging from Human Development at 1-3% to Reproductive & Endocrine Systems at 12-16% (USMLE content specifications).
USMLE Step 1 gives Biostatistics & Epidemiology/Population Health 4-6% of exam content, roughly 11-17 of up to 280 items (USMLE content specifications).
Most candidates invest 1,500-2,500 hours across M1-M2 plus a 6-8 week dedicated period; 2024-2025 first-time pass rates are 89-91% US MD, 86-89% US DO, 70-75% IMG.
USMLE is jointly sponsored by the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME).

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USMLE Step 1 in 2026: The Only Guide You Need

The USMLE Step 1 (United States Medical Licensing Examination, Step 1) is the foundational science licensing exam that every US-trained MD and IMG must pass to progress toward medical licensure and residency in the United States. Since January 26, 2022 , Step 1 has been reported as pass/fail only — a seismic shift that reshaped how medical students study, how residencies select applicants, and how the entire preclinical curriculum is sequenced.

This guide covers the 2026 Step 1 at full depth: the pass/fail transition and what it means, eligibility for US MD/DO and IMG candidates, the exam blueprint (Physician Tasks x Organ Systems), deep per-organ-system high-yield pathology, pharmacology, and microbiology, biostatistics and behavioral science points, the 6-12 month longitudinal plan plus the 6-10 week dedicated period, the consensus resource stack (First Aid, UWorld, Pathoma, Sketchy, B&B, Anki, NBMEs), test-day pacing, common pitfalls, and the Step 1 -> Step 2 CK -> residency pipeline. Every detail is cross-referenced against usmle.org and the 2026 USMLE Bulletin of Information.

Start with FREE practice now: Jump into our free USMLE Step 1 practice questions — exam-style vignettes across every organ system with detailed rationales. No signup, no paywall.

USMLE Step 1 At-a-Glance (2026)

Detail Information
Sponsoring Bodies FSMB + NBME (jointly sponsor USMLE)
Exam Delivery Prometric test centers
Total Items Up to 280 multiple-choice (vignette-based)
Block Structure (before May 14, 2026) 7 blocks of 60 min x up to 40 Qs (legacy)
Block Structure (on/after May 14, 2026) 14 blocks of 30 min x up to 20 Qs (NEW)
Tutorial + Break (legacy) 15-min tutorial + 45-min minimum break
Tutorial + Break (new, May 14+) 5-min tutorial + 55-min minimum break
Total Session 8 hours (unchanged across both formats)
Scoring Pass/fail only (since January 26, 2022; passing standard 196)
Exam Fee (US/Canada MD/DO via NBME) $695
Exam Fee (IMG via ECFMG) $695 + $210 international test delivery surcharge (outside US/Canada) + ECFMG fees
Eligibility LCME MD or COCA DO enrollment/graduate, or ECFMG-eligible IMG
Attempt Limit Max 4 attempts; max 1 per 12 months; max 3 Steps per 12 months
Retake Wait Must wait until 12 months after most recent attempt
Typical Timing End of M2 (after preclinical curriculum)
Dedicated Prep 6-10 weeks, typically 6-8
Content Organization Physician tasks x 11 system categories; pathology 45-55%, physiology 30-40%
FREE Step 1 Prep: Practice Before You Pay

Before committing $695 (or $695 + ECFMG fees + $210 international surcharge as an IMG) plus months of dedicated time, prove to yourself you can reason through Step 1 vignettes. The single most predictive behavior of passing is consistent question-bank performance in the weeks before exam day.

Our free USMLE Step 1 practice question bank covers every organ system with clinical vignettes in the exact stem-lead-question-choices format of the real exam. Every rationale explains the mechanism, not just the right answer.

Claim your free practice: Start USMLE Step 1 practice questions now . No card, no email gate, no paywall.

May 14, 2026: Major Step 1 Format Change

This is the single biggest logistical change to Step 1 since pass/fail in January 2022. Since May 14, 2026, every USMLE Step 1 exam uses new test delivery software with a restructured block format (Step 2 CK switched on May 7, 2026). Set your pacing, break strategy, and practice simulations to the 14-block format.

Before May 14, 2026 (Legacy Format)
7 blocks of up to 40 questions each
60 minutes per block (~90 seconds per question)
15-minute optional tutorial
Minimum 45 minutes of break time (you manage across blocks)
Legacy test delivery interface
On or After May 14, 2026 (New Format)
14 blocks of up to 20 questions each
30 minutes per block (same ~90 seconds per question pacing)
5-minute optional tutorial (shorter — the interface is more familiar)
Minimum 55 minutes of break time (you manage across blocks)

New test delivery software with updated interface design, improved keyboard navigation, per-image contrast controls, and a settings menu

Same 8-hour total session; same up to 280 items total
What Does NOT Change
Total items (up to 280)
Total session length (8 hours)
Pass/fail-only scoring
Content outline (Physician Tasks x Organ Systems)
$695 fee
Difficulty of items
Score reporting timeline
Strategic Implications

Practice on the right simulator. If you are testing on or after May 14, 2026, your UWorld, NBME, and Free 120 simulators should match the 14-block / 30-minute / 20-question rhythm.

Break strategy changes. Instead of allocating a few big breaks across 7 blocks, you will plan a denser pattern of shorter breaks across 14 blocks — more opportunities to reset, but less time per break.

Fatigue profile changes. Many examinees report the shorter blocks reduce cumulative fatigue late in the exam. But you also hit more context-switches.

Tutorial is shorter. The 5-minute tutorial cannot be skipped to bank as much break time. Practice the new interface through the updated USMLE Official Free 120 before test day.

Practice one format. Every Step 1 date now uses the 14-block format, so run every full simulation as 30-minute blocks of up to 20 questions.

Always verify current format rules in the 2026 USMLE Bulletin of Information and the "Test Delivery Software Updates" page at usmle.org before test day.

The Pass/Fail Transition: What Changed January 2022

Before January 26, 2022, USMLE Step 1 was reported on a 3-digit scale from approximately 1-300 with a passing score of 194. The passing standard was raised to 196 effective January 26, 2022. That number followed you through residency applications, and programs used it as the single dominant quantitative screen — applicants below program-specific cutoffs were often auto-filtered out of ERAS review.

On January 26, 2022, USMLE changed Step 1 score reporting to pass/fail only . The underlying scaled score is still computed (to determine pass/fail) but is no longer reported. Examinees who fail receive a performance profile by content area.

Why the Change?

The USMLE announcement cited three primary drivers:

Reducing over-emphasis on a single number. Residency programs had turned Step 1 into a primary screening gate, distorting the preclinical curriculum into a board-prep arms race.

Addressing well-being and equity concerns. Students from under-resourced backgrounds showed persistent gaps on Step 1 scores despite equivalent clinical performance.

Refocusing medical education on foundational competency. Step 1 should demonstrate you can safely practice medicine — not rank order medical students.

What It Means for You in 2026

Pass = sufficient. There is no "doing better" on Step 1. A pass is a pass.

Step 2 CK is now the dominant residency metric. Still numerically scored (currently out of approximately 300 with a passing score of 218). Directors screen by Step 2 CK instead.

Failing Step 1 is still catastrophic. A fail on your transcript is visible to residency programs forever, requires explanation, and narrows the range of programs that will rank you.

Don't under-study. Some students misread pass/fail as "easier" and reduce effort. Pass rates have not moved substantially — the exam is the same difficulty. You still need to master the blueprint.

Who Should Take USMLE Step 1

Everyone pursuing a US medical license or US residency via ACGME-accredited programs must pass all three USMLE Steps (1, 2 CK, 3). Step 1 is the first gate.

Candidate Type Body Primary Path
US/Canadian MD NBME USMLE Step 1 (required)

US DO NBOME COMLEX-USA Level 1 primary; USMLE Step 1 optional (but historically taken by many DO students seeking ACGME residency). With Step 1 pass/fail, the share of DO students taking both has declined but remains substantial.

IMG (international medical graduate) ECFMG USMLE Step 1 required for ECFMG certification + ERAS residency application

US medical student in research year NBME Often scheduled end of M2; can be moved to M3 or M4 depending on school

Step 1 is not for pre-medical students, medical assistants, or other healthcare professionals — it is strictly for matriculated medical students and graduates of LCME/COCA/ECFMG-eligible schools.

Eligibility: US MD/DO and IMG Pathways
US and Canadian MD Students (LCME-Accredited)

Officially enrolled in, or a graduate of, a US or Canadian LCME-accredited MD-granting program, AND

In good academic standing per your school's Step 1 eligibility policy (most schools clear you after completing preclinical coursework).

US DO Students (COCA-Accredited)

Register through the NBOME for COMLEX-USA Level 1 (the required DO licensing exam). To take USMLE Step 1 in addition, register through the NBME with documentation from your COCA-accredited DO school. With Step 1 now pass/fail, a growing share of DO students take only COMLEX — check with your school's dean and target residencies before deciding.

International Medical Graduates (IMGs)

Apply for ECFMG certification via the online application at ecfmg.org.

Verify that your medical school is listed in the World Directory of Medical Schools as meeting ECFMG eligibility requirements.

Submit school verification of enrollment/graduation through ECFMG's EPIC or direct channels.

Pay ECFMG application fee ($580) + credential verification ($220 for graduates) + $695 USMLE Step 1 exam fee + $210 international test delivery surcharge if testing outside the US and Canada.

Schedule through Prometric domestically or at an international test center for the additional $210 surcharge.

IMGs complete all three USMLE Steps, pass the ECFMG certification requirements (including OET English or equivalent English-language proof), and then apply to US residency via ERAS.

Attempt Limits (Strict)

USMLE policy: maximum 4 total attempts per Step , no more than 1 attempt per 12-month period , and no more than 3 attempts across all Steps per 12-month period . After 4 failed attempts at Step 1, you are permanently ineligible . Treat every attempt like your only attempt.

Step 1 Content Outline: Physician Tasks x Organ Systems

USMLE Step 1 uses a 2-axis blueprint. Every item has a physician task/competency and an organ system/content domain .

Axis 1: Physician Tasks (approximate weights — verify at usmle.org)

Task/Competency Official Range
Medical Knowledge: Applying Foundational Science Concepts (mechanisms, concepts, principles) 60-70%
Patient Care: Diagnosis (history, physical examination, and most likely diagnosis) 20-25%
Communication and Interpersonal Skills 6-9%
Practice-based Learning & Improvement (biostats, EBM, study design critique) 4-6%
Axis 2: Organ Systems / Content Domains

# System Official Range
1 Human Development (normal age-related findings, care of the well patient) 1-3%
2 Blood & Lymphoreticular/Immune Systems 9-13%
3 Behavioral Health & Nervous Systems/Special Senses 10-14%
4 Musculoskeletal, Skin & Subcutaneous Tissue 8-12%
5 Cardiovascular System 7-11%
6 Respiratory & Renal/Urinary Systems 11-15%
7 Gastrointestinal System 6-10%
8 Reproductive & Endocrine Systems 12-16%
9 Multisystem Processes & Disorders 8-12%
10 Biostatistics & Epidemiology/Population Health 4-6%
11 Social Sciences: Communication and Interpersonal Skills 6-9%

Human Development replaced the old General Principles category in USMLE's 2024 outline update; biochemistry, cell biology, genetics, pharmacology principles, and microbial biology are now tested inside the organ systems. Discipline ranges overlap because one item can test several disciplines: pathology 45-55%, physiology 30-40%, nutrition 15-20%, and gross anatomy & embryology, microbiology, and pharmacology 10-20% each. Check the current Step 1 Content Outline and Specifications at usmle.org.

The Integration You Actually Need

For every organ system, master the integrated package :

Embryology — developmental origins, malformations
Anatomy + Histology — structure-function
Physiology — normal function
Biochemistry + Genetics — molecular pathways and inherited disorders
Pathology — disease mechanisms, morphology, clinical features
Microbiology + Immunology — organisms causing disease, host response
Pharmacology — drug mechanisms, side effects, interactions

Step 1 vignettes routinely integrate 3-5 of these subjects in a single question. A 28-year-old presents with X symptoms; labs show Y; biopsy reveals Z; which drug mechanism treats the underlying defect? That is the standard form.

Organ System Deep Dives: High-Yield Step 1 Content

The next sections go deep into the per-organ-system high-yield content that dominates Step 1. This is not exhaustive — that is what First Aid, UWorld, and Pathoma are for — but these are the anchor topics that appear on virtually every exam form.

Practice these topics now: Drill high-yield Step 1 vignettes across every organ system with detailed mechanism rationales.

1. Cardiovascular System

The classic Step 1 CV vignette: older adult with chest pain, risk factors, ECG/enzyme changes, and a twist (complication, mechanism, or drug).

Myocardial Infarction Complications Timeline (memorize cold)

Time Post-MI Complication Mechanism
0-24 hours Ventricular arrhythmia (VFib/VTach), sudden cardiac death Ischemic myocardium, re-entry
1-3 days Fibrinous pericarditis Transmural inflammation

3-5 days Free wall rupture -> tamponade; papillary muscle rupture -> acute MR; IV septal rupture -> VSD Peak macrophage activity, collagenolysis

5-10 days Pump failure, cardiogenic shock Extensive myocardial loss
Weeks to months LV aneurysm, mural thrombus -> stroke Scar remodeling
Weeks Dressler syndrome (autoimmune pericarditis) Anti-heart antibody response
Heart Murmur Quick Map

Systolic: Aortic stenosis (crescendo-decrescendo, radiates to carotids), mitral regurgitation (holosystolic, radiates to axilla), mitral valve prolapse (mid-systolic click), tricuspid regurg, VSD, HOCM

Diastolic: Aortic regurgitation (early decrescendo), mitral stenosis (opening snap + rumble), tricuspid stenosis

Pharmacology Pearls

Beta-blockers: decrease HR, BP, O2 demand; cardioselective (metoprolol, atenolol — B1) vs non-selective (propranolol)

ACE inhibitors / ARBs: decrease afterload, reduce mortality in HFrEF; "-pril" / "-sartan"; watch cough (ACE -> bradykinin) and hyperkalemia

Statins: HMG-CoA reductase inhibitors; rhabdomyolysis risk, LFT monitoring

Digoxin: inhibits Na/K ATPase -> increased intracellular Ca -> positive inotrope; toxicity = yellow vision, AV block, hyperkalemia in acute overdose

Antiarrhythmics (Vaughan-Williams): Class I (Na blockers — IA quinidine, IB lidocaine, IC flecainide), II (beta-blockers), III (K blockers — amiodarone, sotalol), IV (Ca blockers — diltiazem, verapamil)

2. Respiratory System
Obstructive vs Restrictive Lung Disease

Feature Obstructive Restrictive
Examples Asthma, COPD, bronchiectasis, CF Pulmonary fibrosis, sarcoid, pneumoconioses, NM disease
FEV1/FVC Decreased (<0.7) Normal or increased
TLC Increased (air trapping) Decreased
DLCO Decreased in emphysema Decreased in fibrosis; normal in NM/chest wall
Lung Cancer Map
Small cell: central, neuroendocrine, paraneoplastic (SIADH, ACTH/Cushing, Lambert-Eaton), smoker
Squamous cell: central, cavitates, hypercalcemia (PTHrP), smoker
Adenocarcinoma: peripheral, most common in non-smokers and women, EGFR/ALK mutations
Large cell: peripheral, poor prognosis
Carcinoid: low-grade, carcinoid syndrome (flushing, diarrhea — elevated 5-HIAA)
Classic Micro Organisms by Setting

Community-acquired pneumonia: Strep pneumoniae (rusty sputum), Mycoplasma (young, bullous myringitis), Legionella (hyponatremia, diarrhea, from water towers), H. flu

Hospital-acquired: Pseudomonas, Staph aureus, Enterobacter
HIV/immunocompromised: Pneumocystis jirovecii (CD4 <200, ground-glass, TMP-SMX), TB, CMV
Aspiration: anaerobes (Peptostreptococcus, Bacteroides, Fusobacterium)
3. Gastrointestinal System
Liver Pathology High-Yield
Hepatitis A: fecal-oral, acute only, no chronic

Hepatitis B: DNA virus, sexual/blood/perinatal, partial-dsDNA with reverse transcriptase — know the serology panel (HBsAg, anti-HBs, anti-HBc IgM/IgG, HBeAg, HBV DNA)

Hepatitis C: RNA flavivirus, blood-borne, high chronicity rate, HCC risk, curable with DAA regimens

Wilson disease: autosomal recessive ATP7B mutation, copper accumulation, Kayser-Fleischer rings, low ceruloplasmin, treat with penicillamine/trientine + zinc

Hemochromatosis: HFE gene, iron overload, bronze diabetes, cardiomyopathy, cirrhosis, HCC risk; phlebotomy

Cirrhosis: ascites, portal HTN (varices, caput medusae, splenomegaly), hepatic encephalopathy (ammonia, lactulose treatment), coagulopathy

GI Pharmacology
PPIs: irreversibly inhibit H/K ATPase; "-prazole"; long-term risks = C. diff, osteoporosis, B12 deficiency
H2 blockers: "-tidine"; cimetidine has antiandrogen effects, CYP450 inhibition
Sucralfate: physical ulcer coating
Bismuth: ulcer protection, H. pylori quad therapy
4. Renal and Urinary System
Renal Tubule Physiology (master this — heavily tested)

Segment Major Transport Drug Target

Proximal convoluted tubule Reabsorbs Na, glucose, amino acids, HCO3; H+ secretion Acetazolamide (carbonic anhydrase); SGLT2 inhibitors

Thick ascending loop of Henle NKCC2 reabsorbs Na/K/2Cl; creates medullary gradient Loop diuretics (furosemide)
Distal convoluted tubule Na/Cl cotransporter Thiazides

Cortical collecting duct Principal cells: Na reabsorption + K secretion (ENaC); Intercalated cells: H secretion K-sparing: amiloride (ENaC), spironolactone (aldosterone receptor)

Glomerular Diseases (Nephritic vs Nephrotic)

Nephritic syndrome (hematuria, HTN, mild proteinuria):

Post-streptococcal GN: 2-4 weeks post-infection, subepithelial humps on EM, C3 low, hump-like IF
IgA nephropathy (Berger): synpharyngitic hematuria, mesangial IgA deposits
Alport: type IV collagen defect, hearing loss, ocular abnormalities
Anti-GBM (Goodpasture): pulmonary-renal, linear IgG on IF
Rapidly progressive GN: crescents

Nephrotic syndrome (massive proteinuria >3.5g/day, edema, hypoalbuminemia, hyperlipidemia):

Minimal change: kids, podocyte effacement on EM, responds to steroids
FSGS: HIV, heroin, AA adults
Membranous: adults, subepithelial immune complexes ("spike and dome"), PLA2R antibodies
Membranoproliferative (MPGN): tram-track BM
Diabetic nephropathy: Kimmelstiel-Wilson nodules
Amyloid: apple-green birefringence with Congo red
5. Nervous System
High-Yield Neuroanatomy Tracts

Dorsal column (fine touch, vibration, proprioception): 1st-order neuron synapses in medulla, 2nd-order crosses in medulla, 3rd-order in thalamus -> cortex

Spinothalamic (pain, temperature, crude touch): 1st-order synapses in spinal cord, 2nd-order crosses at that level, 3rd-order in thalamus

Corticospinal (motor): crosses at the medulla (pyramidal decussation)

Brown-Sequard (spinal cord hemisection) classic presentation: ipsilateral dorsal column loss + ipsilateral UMN weakness below + contralateral spinothalamic loss below.

Neurotransmitters + Pathway Pathology

Disorder Neurotransmitter Change Location
Parkinson disease Dopamine decreased Substantia nigra pars compacta

Huntington disease ACh and GABA decreased; dopamine relatively increased Caudate atrophy; CAG trinucleotide repeat, anticipation

Alzheimer disease ACh decreased Basal nucleus of Meynert; amyloid plaques + NF tangles
Depression NE, serotonin, dopamine decreased —
Anxiety GABA decreased; NE and serotonin increased —
Schizophrenia Dopamine increased (mesolimbic); glutamate decreased —
Dementia Workup
Alzheimer (most common): insidious, hippocampal atrophy, amyloid plaques + tau tangles
Vascular: stepwise decline, infarcts
Lewy body: visual hallucinations, parkinsonism, fluctuating cognition, alpha-synuclein
Frontotemporal (Pick): personality/behavior first, tau or TDP-43
Normal pressure hydrocephalus: wet, wobbly, wacky — ventriculomegaly without increased pressure
6. Musculoskeletal, Skin, and Connective Tissue
Autoimmune vs Infectious Joint Disease

Rheumatoid arthritis: symmetric small joints, morning stiffness >1 hour, RF + anti-CCP, HLA-DR4, pannus formation

Lupus (SLE): ANA (sensitive), anti-dsDNA + anti-Smith (specific), malar rash, serositis, young women
Psoriatic arthritis: asymmetric DIP, sausage digits, nail pitting, HLA-B27
Ankylosing spondylitis: axial, bamboo spine, HLA-B27, young men
Reactive arthritis: can't see (uveitis), can't pee (urethritis), can't climb a tree (arthritis), HLA-B27
Septic arthritis: S. aureus most common; N. gonorrhoeae in young sexually active

Gout: negatively birefringent needle crystals (uric acid); allopurinol, febuxostat (chronic); colchicine/NSAIDs (acute)

Pseudogout: positively birefringent rhomboid crystals (calcium pyrophosphate)
7. Blood and Lymphoreticular
Anemia Workup Algorithm

Start with MCV:

Microcytic (MCV <80): iron deficiency, thalassemia, anemia of chronic disease (late), lead poisoning, sideroblastic

Normocytic: acute blood loss, hemolytic (intrinsic — membrane defects, enzyme defects, hemoglobinopathies; extrinsic — autoimmune, mechanical), anemia of chronic disease (early), aplastic

Macrocytic (MCV >100): megaloblastic (B12, folate — hypersegmented neutrophils), non-megaloblastic (liver disease, alcohol, hypothyroid)

Leukemias/Lymphomas (memorize age-organism-marker)
ALL: kids, CD10+, TdT+, Down syndrome risk
AML: adults, Auer rods (M3 APL with t(15;17) — treat with ATRA), myeloperoxidase
CLL: elderly, smudge cells, CD5+ CD19+, B cell
CML: Philadelphia chromosome t(9;22) BCR-ABL, treat with imatinib
Hodgkin lymphoma: Reed-Sternberg cells (CD15+ CD30+), contiguous spread, bimodal age
Non-Hodgkin (Burkitt): t(8;14) c-MYC, starry sky histology, EBV in African variant
8. Endocrine System
Thyroid Map
Hashimoto: hypothyroidism, anti-TPO and anti-thyroglobulin, HLA-DR3, risk of thyroid lymphoma
Graves: hyperthyroid, TSH receptor antibody, exophthalmos, pretibial myxedema
Subacute (de Quervain) thyroiditis: post-viral, painful, granulomatous
Papillary thyroid cancer: most common, Orphan-Annie nuclei, psammoma bodies, good prognosis
Medullary thyroid cancer: C cells, calcitonin, MEN 2A/2B, RET mutation
Adrenal

Cushing syndrome: cortisol excess — exogenous steroids (most common), Cushing disease (pituitary ACTH), ectopic ACTH (small cell lung)

Addison: primary adrenal insufficiency, hyperpigmentation (ACTH -> MSH), hyponatremia, hyperkalemia
Pheochromocytoma: 10% rule, urinary metanephrines, MEN 2, alpha-block before beta
Diabetes Pharm
Metformin (first-line T2DM): biguanide, decreases hepatic gluconeogenesis, lactic acidosis risk
Sulfonylureas (glipizide): close K-ATP channel on beta cells, hypoglycemia risk
GLP-1 agonists ("-tide" — liraglutide, semaglutide): delay gastric emptying, weight loss
DPP-4 inhibitors ("-gliptin"): prolong GLP-1 action
SGLT2 inhibitors ("-gliflozin"): glucosuria, CV benefit, UTI/euglycemic DKA risk
Insulin: regular, NPH, long-acting (glargine, detemir), rapid (lispro, aspart, glulisine)
9. Reproductive System
Testicular Tumor Markers
Seminoma: beta-hCG may be elevated; AFP NEVER; radiosensitive, best prognosis
Yolk sac (endodermal sinus): AFP elevated
Choriocarcinoma: beta-hCG markedly elevated, hemorrhagic
Embryonal carcinoma: AFP + beta-hCG both can be elevated
Ovarian Tumor Markers
Epithelial (serous, mucinous): CA-125 (serous)
Germ cell (dysgerminoma — AFP neg, LDH pos; yolk sac — AFP pos; choriocarcinoma — hCG pos)
Sex cord stromal (granulosa — inhibin, estrogen excess; Sertoli-Leydig — androgens)
Pregnancy Complications
Ectopic: beta-hCG positive without IUP on ultrasound, abdominal pain
Preeclampsia: >20 weeks, HTN + proteinuria, risk eclampsia (seizures) and HELLP
Gestational diabetes: OGTT screen, large for gestational age, shoulder dystocia risk
10. Behavioral Health and Psychiatry
DSM-5-TR Major Categories for Step 1
Major depressive disorder: 5+ symptoms x 2 weeks with depressed mood or anhedonia (SIGECAPS)
Bipolar I: at least one manic episode (DIGFAST); bipolar II: hypomania + depression

Schizophrenia: 6 months of symptoms with 1 month active (positive — hallucinations, delusions; negative — flat affect)

Anxiety disorders: GAD, panic, social anxiety, specific phobia
OCD: obsessions + compulsions, 1st-line SSRI + CBT
PTSD: >1 month post-trauma, re-experiencing, avoidance, hyperarousal, negative cognition
Borderline PD: splitting, instability, parasuicidal; dialectical behavior therapy
Antisocial PD: violates rights, conduct disorder history
Psych Pharm

SSRIs (first-line for depression/anxiety): fluoxetine, sertraline — GI, sexual SE, serotonin syndrome if combined with MAOI

SNRIs: venlafaxine, duloxetine
TCAs: amitriptyline — anticholinergic, cardiac toxicity in overdose
MAOIs: hypertensive crisis with tyramine

Antipsychotics: typical (D2 block — EPS, tardive dyskinesia, NMS); atypical (clozapine — agranulocytosis; olanzapine — weight gain)

Lithium: narrow therapeutic index, nephrogenic DI, hypothyroid, teratogenic (Ebstein anomaly)
Integrated Topics: Biostatistics, Ethics, and Social Sciences

Biostatistics & Epidemiology/Population Health (4-6%) and Social Sciences: Communication and Interpersonal Skills (6-9%) together make up about 10-15% of Step 1 and are the highest-yield per study hour. These are straight-memorization points that disciplined students crush.

Biostatistics Must-Knows
2x2 Table Measures

Disease + Disease -
Test + TP FP
Test - FN TN
Sensitivity = TP / (TP + FN) — intrinsic, prevalence-independent; SN-Out (rule out)
Specificity = TN / (FP + TN) — intrinsic, prevalence-independent; SP-In (rule in)
PPV = TP / (TP + FP) — prevalence-dependent (drops when prevalence drops)
NPV = TN / (FN + TN) — prevalence-dependent (rises when prevalence drops)
LR+ = sensitivity / (1 - specificity)
LR- = (1 - sensitivity) / specificity
NNT = 1 / ARR (absolute risk reduction)
NNH = 1 / attributable risk
Study Design Hierarchy (low to high evidence)
Case report / case series
Cross-sectional (prevalence, snapshot)
Case-control (retrospective, odds ratio, good for rare diseases)
Cohort (prospective, relative risk, good for rare exposures)
RCT (randomized controlled trial — gold standard for intervention)
Meta-analysis / systematic review
Bias Types
Selection bias (non-representative sample; e.g., Berkson, healthy worker)
Recall bias (case-control, retrospective)
Observer/interviewer bias -> blinding
Measurement bias -> calibration
Confounding -> stratification, matching, multivariate regression
Effect modification (not bias — a true interaction)
Lead-time bias, length-time bias (screening)
Ethics and Professionalism Frameworks

The four principles: autonomy, beneficence, non-maleficence, justice.

MacArthur Capacity (4 criteria)
Understanding the relevant information
Appreciating the situation and its consequences
Reasoning about treatment options
Expressing a choice

A patient can refuse treatment with full capacity — autonomy wins.

Informed Consent

Must include: diagnosis, nature/purpose of treatment, risks/benefits, alternatives (including no treatment), and right to withdraw consent. Exceptions: emergency, incompetence (surrogate), therapeutic privilege (rare), waiver.

Confidentiality Exceptions (Tarasoff and Beyond)
Serious threat to self or identifiable others (duty to warn/protect)
Child/elder abuse (mandatory report)
Certain communicable diseases (public health reporting)
Court order
Patient incompetent + emergency
Social/Behavioral Sciences High-Yield
Defense mechanisms (mature: sublimation, humor, altruism, suppression)
Grief (Kubler-Ross stages; complicated vs uncomplicated)
Pediatric developmental milestones (1, 2, 4, 6, 9, 12, 18, 24 months; 3, 4, 5 years)
Sleep stages and disorders (narcolepsy, sleep apnea, REM behavior)
Sexual dysfunction (DSM criteria, medication-induced)
Cost: The Real Number for 2026

Item US/Canadian MD/DO IMG via ECFMG
Step 1 exam fee (2026) $695 $695
International test delivery surcharge (outside US/Canada) N/A $210
ECFMG Application for Certification (IMG only) N/A $580
ECFMG credential verification fee (IMG graduates) N/A $220
Eligibility period extension fee ~$90 ~$90
Reschedule fee (Prometric) $0-$75 depending on notice $0-$90
Test region change ~$85 ~$90
Prep materials (typical) $1,500-$3,500 $1,500-$3,500
Typical Prep Stack Cost
UWorld Step 1 Qbank (12 months): ~$439 + self-assessment assets
NBME Self-Assessments 25-31 + Free 120: ~$60 each (7 assessments = ~$420)
First Aid for USMLE Step 1 2026 edition: ~$55-$70
Pathoma (textbook + video access): ~$120-$200
Sketchy (Micro + Pharm + Path bundle): ~$300-$500
Boards and Beyond (B&B): ~$400-$700
Amboss (12-month): ~$175-$350
Anki + AnKing v12: free (donation-based)
Divine Intervention podcast: free

Budget $1,500-$3,500 for prep materials alone across M1-M2 plus dedicated.

Registration Walkthrough
US/Canadian MD (NBME)

Log into the NBME USMLE web portal.

Create a USMLE/FSMB ID.

Complete the Step 1 application (school verification may be required directly from your registrar).

Pay $695 exam fee.

Select a 3-month eligibility period (you can reschedule within this window; extensions cost extra).

Receive the scheduling permit (orange slip) by email.

Schedule your appointment at a Prometric test center via the scheduling link on your permit.

Review the Prometric ID rules (government-issued photo ID with matching name) before test day.

IMG (ECFMG)

Apply for ECFMG certification at ecfmg.org.

Upload school transcripts and diploma verification through EPIC or direct medical school channels.

Complete the USMLE Step 1 application through ECFMG's OASIS portal.

Pay the $695 USMLE Step 1 exam fee + $210 international test delivery surcharge (if testing outside US/Canada) + applicable ECFMG application/credential fees.

Receive the scheduling permit.

Schedule at a Prometric center in the selected region or at an OET test center (+$210).

Bring ECFMG-issued scheduling permit + government-issued photo ID on test day.

6-12 Month Longitudinal Study Plan

Step 1 prep is not a sprint — it's the entire M1-M2 curriculum done with board alignment in mind. Here is the consensus 2026 longitudinal framework.

M1 Year (Foundation Building)

Primary resources: class notes + First Aid + Anki deck (AnKing v12, Lightyear, or Dorian) + Boards and Beyond (or Osmosis)

Anki daily: unsuspend cards as you cover topics in class; review daily without fail

UWorld: do not use UWorld heavily yet — you will burn your only fresh pass of the best Qbank. Save UWorld primarily for M2 and dedicated. (Some students do selected UWorld during M1 organ blocks — acceptable in moderation.)

Goal: build the mental scaffold; when dedicated starts, you need to reinforce, not rebuild.

M2 Year (Integration + Question Bank)

Use UWorld Step 1 Qbank extensively — ideally start first pass in early M2, paired with organ systems as you cover them. Do timed 20-question, 30-minute blocks (the current exam block) plus tutor-mode sets while learning.

Sketchy (Micro + Pharm + Path): memorize the pictures — they stick for exam day
Pathoma: chapters 1-3 are free; full course for M2 pathology review
Anki reviews: daily, never skipped — this is the single habit that separates high pass margins from low ones
Weekly NBME self-assessment: optional in late M2 to benchmark readiness before scheduling dedicated
Dedicated Period (6-10 weeks, typically 6-8)
Weeks 1-4: Content Review + UWorld second pass
2-3 organ systems per week, using First Aid as master outline
80-160 UWorld questions per day (timed, random, tutor mode) — aim for 2nd pass or wrong-only pass
Anki: daily reviews of suspended/marked cards + new learning cards
Pathoma chapters 1-3 twice; review high-yield Sketchy videos
First full-length NBME at the end of week 2 or 3 (NBME 25 or 26) to benchmark
Weeks 5-6: NBME Cycle + Weak-Area Targeting
NBME every 5-7 days (NBME 27, 28, 29, 30, 31) on timed mode
Review EVERY wrong answer and every guess deeply
Target weak organ systems with focused Anki + B&B/Pathoma review
Continue 80-160 UWorld daily
Week 7 (Final Week): Free 120 + Consolidation
Take the USMLE Official Free 120 under timed conditions (3-block simulation of the real interface)
Review wrong answers
Light Anki reviews only — no new content
Sleep, hydration, exercise — prep your body for the 8-hour session
Drive to the test center if local; check parking, ID, arrival logistics
When to Schedule

Schedule Step 1 when you are consistently scoring pass-level on NBMEs 30 and 31 plus the Free 120. A pass on NBME 30/31 reliably predicts a pass on the real exam; repeated fails on NBMEs predict a real fail — do not test until the numbers support it.

Resource Stack: The 2026 Consensus

Resource Role Priority
First Aid for USMLE Step 1 (Le et al., 2026 ed.) Master outline; annotate from day 1 of M1 Essential
UWorld Step 1 Qbank Gold-standard practice, pass predictor Essential
Pathoma (Sattar) Pathology — chapters 1-3 are foundational; full course for comprehensive path Essential
Sketchy (Micro + Pharm + Path) Visual mnemonics that stick Essential for micro/pharm
Boards and Beyond (Ryan) Video lectures — deep preclinical integration High priority
Anki (AnKing v12 deck) Spaced repetition — the consistency multiplier Essential
NBME Self-Assessments 25-31 Pass predictors during dedicated Essential
USMLE Free 120 Final simulation of the real interface Essential
Amboss Qbank + Library Secondary Qbank + explanations Optional
Kaplan Qbank Secondary Qbank Optional
USMLE-Rx Qbank Aligned with First Aid Optional
Divine Intervention podcasts Free audio high-yield review Free, high value
OnlineMedEd Behavioral, ethics, public health Optional
Anki decks (Lightyear, Dorian, Zanki) Alternative comprehensive decks Pick one
The Truth About "More Resources"

Using 8 resources at 30% each beats no single resource used to 90%. The students who pass are the ones who pick First Aid + UWorld + Anki + Pathoma + Sketchy and finish them — not the ones who dabble in 15 resources.

Benchmark your prep weekly: Take a timed Step 1 practice set on our free question bank and compare performance to your NBME targets.

Test-Day Strategy
Pacing: ~90 Seconds per Question (Both Formats)

Per-question pacing is the same in both formats (~90 s/Q); only block length differs.

Legacy (before May 14, 2026) — 60 min / 40 Q blocks: first pass 60-75 s/Q, flag + best-guess, return on remaining time.

New (on/after May 14, 2026) — 30 min / 20 Q blocks: same ~90 s/Q but half the block length, so less intra-block review time per chunk. Plan to commit decisively on first pass with minimal flag-and-revisit.

Never leave a block blank — there is no guessing penalty. Fill every answer.

Break Strategy

Total break time is NOT specified per block — you manage it. Common allocations:

Legacy 7-block format (min 45 min break):

After block 2: 5-7 min (bathroom, snack)
After block 4: 10-15 min (full lunch — protein + carbs, hydration)
After block 6: 5-10 min (final push reset)

New 14-block format (min 55 min break, starting May 14, 2026):

Short micro-breaks (2-4 min) every 2 blocks during the first half (stretch, hydrate)
Longer lunch break (~15-20 min) after block 6 or 7 (mid-session)
One 5-10 min reset in the final third (before the last 2-3 blocks)

Tutorial time (15 min legacy, 5 min new) is optional — skip only if you've rehearsed the current interface on the USMLE Official Free 120 and the UWorld simulator. Skipping banks the unused time into your break pool.

The Day-Before Checklist

Light review only — no new content. Panic learning hurts more than helps.

Pack: ID (match the name on your permit exactly), scheduling permit, water, snacks (protein bar, banana, nuts), lunch, earplugs (approved types), extra layers.

Set two alarms. Check route. Allow 30 min buffer.

Sleep 7-8 hours.

On Test Day

Arrive 30 min early. Check-in includes biometric ID scan + pocket check.

Use the 5-minute optional tutorial to verify the interface is familiar (skip it to add the unused time to your break pool if comfortable).

Stay fueled. Brain glucose matters across 8 hours.

Between blocks: stand, stretch, hydrate, breathe. Do not obsess over past blocks.

After the last block: walk out. You are done. No amount of post-exam analysis helps.

Common Pitfalls and How to Avoid Them
Pitfall #1: Starting Dedicated Too Late

Candidates who treat M1-M2 as lecture-mode-only then expect to build the scaffold during dedicated universally struggle. Dedicated is for review and question banks — if content is new to you in week 3 of dedicated, the timeline is already broken. Start Anki and First Aid annotations on day 1 of M1.

Pitfall #2: Over-Reliance on a Single Resource

"I'm just going to do UWorld" or "I'm just going to read First Aid" fails. UWorld without First Aid leaves gaps in conceptual integration. First Aid without UWorld leaves you unable to apply mechanisms to vignettes. Pair resources.

Pitfall #3: Poor Anki Habits

Anki works only if you review daily. Missing 2 weeks produces a card backlog that psychologically crushes most students. Set a floor (e.g., 100 cards/day minimum) and maintain it. Quality of cards > quantity — prefer the AnKing or Lightyear community decks over making your own from scratch.

Pitfall #4: Not Simulating NBMEs Under Timed Conditions

NBMEs are your single best pass predictor. Taking them casually, in tutor mode, with interruptions, yields inflated scores and false confidence. Simulate the 4-block timed conditions every time. Your NBME 30 and 31 scores under real conditions are what predict your actual exam outcome.

Pitfall #5: Burning UWorld Early

UWorld is finite — ~3,300 questions. Doing UWorld in M1 on random mode depletes your best review material before dedicated. Many students reserve UWorld primarily for late M2 and dedicated. If you do use UWorld in M1, use discipline — limit to current-organ-system tutor blocks.

Pitfall #6: Under-Studying Because "It's Pass/Fail"

Pass rates have not shifted dramatically post-2022. The exam remains the same difficulty. Students who assume pass/fail means "easy" often fail. Respect the test.

Pitfall #7: Ignoring Biostats and Ethics

Biostats (4-6%) and communication/ethics (6-9%) together are 10-15% of the exam, roughly 28-42 of up to 280 items. These are the highest yield-per-hour on the exam because they are memorizable. A week of dedicated biostats review can be worth 10+ scored items — that can be the margin between pass and fail.

Pitfall #8: Testing on a Bad Readiness Signal

Rule: if your last two NBMEs are not both pass-level, reschedule. Eligibility period extensions cost ~$85 — a trivial price compared to a failed attempt on your transcript plus a mandatory 12-month wait.

Pitfall #9: Neglecting Step 2 CK Preparation

Step 1 prep should leave enough runway that Step 2 CK is not a panic. Many students pass Step 1 then scramble for Step 2 CK 3-4 months later with residency applications looming. Plan the full USMLE sequence.

Pitfall #10: Skipping the Free 120

The Free 120 is the only questions released by USMLE itself in the actual test interface. Always take it in the final week under timed simulation. Your Free 120 score is a strong final predictor.

Step 1 -> Step 2 CK -> Residency Pipeline
USMLE Sequence

Step Content Length Scoring Typical Timing

Step 1 Foundational sciences 8 hours, up to 280 Qs (7 blocks before May 14, 2026; 14 blocks on/after) Pass/fail (since 1/2022) End of M2

Step 2 CK Clinical knowledge (dx + mgmt) 9 hours, 16 blocks of 30 min (since May 7, 2026), up to 318 Qs 1-300 scale (passing 218) M3 or early M4

Step 3 Clinical decision-making (incl. CCS cases) 2 days (~16 hours total) 1-300 scale (passing 200) PGY-1 (intern year)

Residency Application Shift (2026)

With Step 1 pass/fail, residency selection emphasizes:

Step 2 CK score (dominant quantitative metric) — aim for 250+ for competitive specialties; 240+ for most
Clinical grades (M3 clerkship grades, especially in the specialty's core rotations)
Research (publications, posters, ongoing projects)
Letters of recommendation (departmental for competitive specialties)
Away rotations (sub-internships) for surgical and competitive specialties
USMLE Step 1 pass on first attempt — a fail is still a red flag
MSPE (Dean's letter) summary statement
Personal statement + program-specific signals
Career Value After Passing

Passing Step 1 makes you eligible for every downstream step toward US residency and licensure:

Register for ERAS (Electronic Residency Application Service)
Participate in the NRMP Main Residency Match
Progress through M3-M4 clinical years with board eligibility documented
Complete Step 2 CK, Step 3, and ACGME residency training
Obtain state medical licensure (all 50 states require all 3 USMLE Steps)
Pursue board certification in your specialty after residency

Median compensation for physicians varies widely by specialty — BLS and MGMA data show primary care around $240,000-$280,000, general surgery around $400,000+, and high-paying specialties (ortho, derm, plastics, cardiology, GI, anesthesia) frequently $450,000-$700,000+. Step 1 is the first gate to this career.

USMLE Step 1 vs COMLEX-USA Level 1 (for DO Students)

Feature USMLE Step 1 COMLEX Level 1
Sponsoring Body NBME + FSMB NBOME
Required For ACGME residency + MD/DO licensure DO licensure + many ACGME residency programs

Format Up to 280 Qs, 8 hours (7 blocks before May 14, 2026; 14 blocks on/after) 8 blocks, 352 Qs, 7-hour testing

Scoring Pass/fail (since 1/2022) Pass/fail (since 5/2022)
Content Difference Allopathic medicine Allopathic + Osteopathic Manipulative Medicine (OMM/OMT)
Fee (2026) $695 ~$745 (verify at nbome.org)

DO students must take COMLEX. Whether to also take USMLE depends on target residencies — pre-2022, nearly all DOs seeking competitive ACGME spots also took USMLE. Post-pass/fail, fewer DOs double-test because the numeric differentiation is gone. Check target program requirements.

Your Next Steps After Passing Step 1

Start Step 2 CK preparation immediately — many students keep UWorld momentum rolling right into Step 2 CK Qbank; clinical rotations in M3 are your real content exposure.

Build clinical grades — sub-internships, AOA/GHHS if available, strong clerkship performance.

Research pipeline — start or continue projects; aim for publications before ERAS.

Cultivate mentors for specialty decision + letters of recommendation.

Plan Step 3 for intern year (PGY-1) — most programs allow or require it during the first residency year.

State licensure — apply to your state medical board after all three Steps are passed and residency training is documented.

Final CTA: Start Practicing Today

USMLE Step 1 is a pass-able exam with a clear roadmap. The students who pass on the first attempt are the ones who started Anki on day 1, annotated First Aid across M1-M2, did UWorld thoroughly, and respected the NBMEs as their readiness gauge. The students who fail almost always share one of three traits: they started dedicated too late, they over-relied on a single resource, or they tested on a bad NBME signal.

Free USMLE Step 1 practice: Start practicing now . Answer 40 exam-style vignettes, score by organ system, and use the breakdown to see your weakest domains. Every correct answer includes a detailed rationale that explains the mechanism — which is how you learn to reason like a board-passing medical student, not just pattern-match.

The 2026 medical education landscape has normalized pass/fail Step 1, shifted residency selection to Step 2 CK + clinical performance, and elevated biostats/ethics to their highest-ever yield per study hour. 6-10 weeks of disciplined dedicated preparation on top of a Step-aligned M1-M2 curriculum passes this exam. The MD/DO degree is the work. Step 1 is the checkpoint. You can clear it.

Good luck. You earned the right to sit this exam. Now earn the pass.

Official Sources
USMLE home: https://www.usmle.org
USMLE Bulletin of Information (2026): available from usmle.org
USMLE Step 1 Content Description and General Information: https://www.usmle.org/step-exams/step-1
NBME: https://www.nbme.org
FSMB: https://www.fsmb.org
ECFMG (for IMGs): https://www.ecfmg.org
NBOME (for DO students + COMLEX): https://www.nbome.org
Prometric test scheduling: https://www.prometric.com
LCME (MD accreditation): https://lcme.org
COCA (DO accreditation): https://osteopathic.org/accreditation
World Directory of Medical Schools: https://www.wdoms.org

Information current as of April 2026. Always verify specific fees, content outline percentages, attempt rules, and pass/fail policy at usmle.org before applying or registering. Step 1 policies have evolved substantially since 2020 and continue to be updated.