AnKing v12 — Step 1 Coverage Audit
The AnKing Step 1 deck is enough for the high-yield core of USMLE Step 1 — and then some. Its high-yield core coverage is Comprehensive, its breadth across the full Step 1 outline is Comprehensive, and its depth is Deep, meaning it drills each concept across many cards rather than giving you a single pass and moving on. If you want one deck to carry you through Step 1, this is the one the medical school Anki community has converged on for good reason.
The AnKing Step 1 (Overhaul) Deck is a collaboratively maintained, ~33k-card Anki deck built on top of the Zanki and Lightyear foundations and continuously updated by a team of medical students through AnkiHub. It's designed as a comprehensive primary deck — not a quick review tool. Students who commit to it get deep drilling on every major system. It is strongest in Biochemistry, Immunology, Microbiology, General Pathology, and General Pharmacology, where coverage is thorough and the card density reflects the weight those subjects carry on the actual exam. Where it runs lighter — including Social Determinants of Health, Evidence-Based Medicine, NSTEMI Risk Stratification and Timing, Takotsubo Cardiomyopathy, β-Blocker and Calcium Channel Blocker Overdose, Schizophreniform Disorder, Illness Anxiety Disorder, Fracture Healing Stages, Minoxidil, and Costochondritis — the gaps are narrow and targetable, not systemic.
This page offers the only independent audit of the AnKing Step 1 deck mapped against the full USMLE Step 1 content outline at the subtopic level. If you want to know exactly where the deck is comprehensive, where it runs lighter, and what to pair it with to shore up those areas, you're in the right place.
High-yield core = how fully the must-know concepts are covered. Breadth = how much of our 915-subtopic Step 1 outline the deck spans. Depth = cards per concept — a study-style signal (deep drilling vs. a fast single pass), not a quality score. Step 1 cards counts cards mapping to our outline (off-exam excluded); rounded estimate. High-yield designations are calibrated against First Aid, UWorld, Pathoma, Boards & Beyond, AMBOSS, and community deck tags. Methodology →
Coverage by area
| Area | Coverage | Depth |
|---|---|---|
| Biochemistry | comprehensive | Deep |
| Immunology | comprehensive | Deep |
| Microbiology | comprehensive | Deep |
| General Pathology | comprehensive | Deep |
| General Pharmacology | comprehensive | Deep |
| Cardiovascular | comprehensive | Deep |
| Endocrine | comprehensive | Deep |
| Gastrointestinal | comprehensive | Deep |
| Hematology and Oncology | comprehensive | Deep |
| Musculoskeletal, Skin, and Connective Tissue | comprehensive | Deep |
| Neurology and Special Senses | comprehensive | Deep |
| Psychiatry | comprehensive | Moderate |
| Renal | comprehensive | Deep |
| Reproductive | comprehensive | Deep |
| Respiratory | comprehensive | Deep |
| Public Health Sciences | comprehensive | Moderate |
| Total | Comprehensive breadth | Deep · ~36 cards/concept |
Two different axes. Coverage is how much of the area the deck touches (comprehensive / solid / lightly covered). Depth is how hard it drills what it covers — cards per concept, a study-style signal, not a quality score. A small area can be fully covered yet lightly drilled, so the two columns move independently. Shapes rather than precise figures — the mapping is probabilistic.
Coming from another deck?
Most Step 1 decks overlap heavily — they cover the same exam — so switching rarely changes which concepts you see. What actually differs is how hard each deck drills a concept (depth) and, occasionally, how much ground it covers (area level). Both, per deck:
| If you've used | How AnKing v12 compares |
|---|---|
| vs Soze Step 1 | Drills deeper ~36 vs ~5 cards/concept + covers Public Health Sciences, Respiratory more fully |
| vs Mnemosyne | Drills deeper ~36 vs ~16 cards/concept |
| vs Lightyear | Drills deeper ~36 vs ~16 cards/concept |
| vs Zanki | Drills deeper ~36 vs ~22 cards/concept |
Depth is cards per concept (study style, not quality); coverage differences are reported at the area level — the card-to-concept mapping is reliable in aggregate but not precise enough to call out individual missing topics. Compare any two Step 1 decks →
Coverage by official USMLE system
The same coverage, re-grouped against the official NBME content outline (organ systems) rather than our study-resource areas. Every subtopic is mapped to its NBME system.
| NBME system | Coverage |
|---|---|
| Multisystem (foundational) | comprehensive |
| Cardiovascular | comprehensive |
| Immune | comprehensive |
| Respiratory | comprehensive |
| Gastrointestinal | comprehensive |
| Female Repro & Breast | comprehensive |
| Nervous & Special Senses | comprehensive |
| Pregnancy & Childbirth | comprehensive |
| Blood & Lymphoreticular | comprehensive |
| Endocrine | comprehensive |
| Musculoskeletal | comprehensive |
| Renal & Urinary | comprehensive |
| Skin & Subcutaneous | comprehensive |
| Behavioral Health | comprehensive |
| Male Repro | comprehensive |
| Social Sciences | comprehensive |
| Biostatistics & Epidemiology | comprehensive |
Omitted (too few mapped subtopics to characterize): Human Development.
Where AnKing v12 runs lighter
Concepts our outline flags as lightly covered here — ranked by how heavily Step 1 tests them, so what's worth supplementing sits at the top. Lighter coverage isn't a defect; a focused deck deliberately spends its cards elsewhere.
- Social Determinants of HealthPublic Health Sciences
- Evidence-Based MedicinePublic Health Sciences
- high-yieldNSTEMI Risk Stratification and TimingCardiovascular
- Takotsubo (Stress) CardiomyopathyCardiovascular
- β-Blocker and Calcium Channel Blocker OverdoseGeneral Pharmacology
- Schizophreniform DisorderPsychiatry
- Illness Anxiety Disorder (Hypochondriasis)Psychiatry
- Fracture Healing StagesMusculoskeletal, Skin, and Connective Tissue
- Minoxidil (Topical and Systemic)Reproductive
- CostochondritisMusculoskeletal, Skin, and Connective Tissue
- Autoimmune HepatitisGastrointestinal
- Roflumilast (PDE4 Inhibitor)Respiratory
- Meconium Aspiration SyndromeRespiratory
- Inhalant Use DisorderPsychiatry
- Body Dysmorphic DisorderPsychiatry
- plus others lower on the priority list
AnKing's #HighYield tagging
AnKing classifies every reviewed card into one of five yield levels. Here's how the 27,498 Step 1 cards in the deck break down.
| Tag | Cards | Share | Subtopics covered |
|---|---|---|---|
1-HighYield | 7,122 | 26.0% | 805/915 (88%) |
2-RelativelyHighYield | 5,753 | 21.0% | 815/915 (89%) |
3-HighYield-temporary | 3,120 | 11.0% | 729/915 (80%) |
4-LowerYield | 2,822 | 10.0% | 757/915 (83%) |
5-LowYield | 1,948 | 7.0% | 499/915 (55%) |
Untagged | 6,733 | 24.0% | 808/915 (88%) |
About 24.0% of cards are untagged — AnKing's yield system is applied to most but not all of the deck. "Untagged" doesn't mean low priority.
Where AnKing's #HighYield concentrates
Subtopics with the most cards tagged 1-HighYield or 2-RelativelyHighYield.
- 189 cardsHerpesvirus Family (HSV-1/2, VZV, EBV, CMV, HHV-6/7/8)Microbiology
- 117 cardsWater-Soluble Vitamins (B-complex and C)Biochemistry
- 116 cardsAntiarrhythmics (Class I-IV + Others)Cardiovascular
- 101 cardsViral Structure, Genome, and Replication (Survey)Microbiology
- 100 cardsVaccine Types and ContraindicationsImmunology
- 98 cardsInheritance PatternsBiochemistry
- 96 cardsOther Important RNA Viruses (Rabies, Rotavirus, Parvovirus, Norovirus, Zika, Dengue)Microbiology
- 94 cardsBrachial PlexusMusculoskeletal, Skin, and Connective Tissue
- 93 cardsCell Wall Synthesis InhibitorsMicrobiology
- 91 cardsAntiplatelets and AnticoagulantsCardiovascular
Subtopics with cards in the deck but no #HighYield-tagged cards
Topics covered in AnKing where none of the cards carry a 1-HighYield or 2-RelativelyHighYield tag. Filtering to #HighYield skips these.
- 99 cardsDevelopmental Milestones (Infant and Child)Psychiatry
- 68 cardsBurns and Rule of 9sMusculoskeletal, Skin, and Connective Tissue
- 30 cardsSkin Lesion TerminologyMusculoskeletal, Skin, and Connective Tissue
- 28 cardsParasomnias — Sleepwalking, Night Terrors, REM Behavior DisorderPsychiatry
- 22 cardsMeasurement and Information BiasPublic Health Sciences
- 19 cardsLichen PlanusMusculoskeletal, Skin, and Connective Tissue
- 18 cardsSuicide Risk Assessment and Risk FactorsPsychiatry
- 16 cardsAPGAR ScoreReproductive
- 15 cardsCOPD — Chronic ManagementRespiratory
- 14 cardsCRISPR and Gene Therapy ConceptsBiochemistry
What AnKing v12 users lapse on most
Subtopics with the highest median lapse rate across Step 1 students who uploaded their decks to Lacunos. These are the cards the cohort keeps forgetting — likely worth extra drilling whatever deck you use.
- 5.5 lapses / 14dHerpesvirus Family (HSV-1/2, VZV, EBV, CMV, HHV-6/7/8)Microbiology
- 3 lapses / 14dCranial Nerves — Functions and LesionsNeurology and Special Senses
- 3 lapses / 14dCell Wall Synthesis InhibitorsMicrobiology
- 3 lapses / 14dVasculitides (Large / Medium / Small Vessel)Cardiovascular
- 2.5 lapses / 14dAntiplatelets and AnticoagulantsCardiovascular
- 2.5 lapses / 14dAntiarrhythmics (Class I-IV + Others)Cardiovascular
That's the cohort. Your lapses cluster differently — find where →
How to pair AnKing v12 with other resources
Most students pair the AnKing Step 1 deck with First Aid as a reading anchor — AnKing's cards are largely tagged to First Aid chapters, so the two resources reinforce each other directly. Pathoma is the standard complement for General Pathology and organ-system pathology depth; even though AnKing covers General Pathology strongly, Pathoma's video explanations build the conceptual scaffolding that makes the cards stick faster. Sketchy covers Microbiology and Pharmacology through visual mnemonics, and because AnKing already runs deep in both of those areas, Sketchy functions as a memorization accelerant rather than a content supplement — many students use Sketchy-based Anki cards integrated into the AnKing deck itself via AnkiHub.
For the areas where AnKing runs lighter, targeted resources make a real difference. Boards & Beyond is the go-to supplement for Evidence-Based Medicine and Social Determinants of Health — two Public Health Sciences topics where AnKing's coverage is thinner and B&B's structured video lectures fill the content efficiently. For the lighter cardiovascular and psychiatry topics — NSTEMI Risk Stratification and Timing, Takotsubo Cardiomyopathy, Schizophreniform Disorder, and Illness Anxiety Disorder — a focused read of the relevant First Aid sections or UWorld question explanations is usually sufficient to close the gap. The lighter musculoskeletal entries like Fracture Healing Stages and Costochondritis are best handled through UWorld exposure rather than building out a parallel card set.
Frequently asked questions
Is AnKing enough for Step 1?
Yes — the AnKing Step 1 deck covers the high-yield core of USMLE Step 1 comprehensively, with broad and deep coverage across every major system. It runs lighter on a handful of topics, most notably Social Determinants of Health, Evidence-Based Medicine, and a few cardiovascular and psychiatry subtopics, which are easy to supplement with Boards & Beyond or First Aid. For the vast majority of students, AnKing is their single primary deck from day one of dedicated prep through exam day.
How many cards are in AnKing?
The AnKing Step 1 deck contains approximately 33,000 cards, making it one of the largest and most comprehensive Anki decks available for USMLE Step 1 preparation. Most students do not attempt every card — they suspend cards outside their current study block and unsuspend as they go, following a system like AnKing's own recommended order. The ~33k figure reflects the full deck before any personal filtering.
Where does AnKing run lighter for Step 1?
AnKing runs lightest on Social Determinants of Health and Evidence-Based Medicine within the Public Health Sciences domain — these are the highest-priority areas to supplement, since they carry real exam weight. It also covers NSTEMI Risk Stratification and Timing, Takotsubo Cardiomyopathy, β-Blocker and Calcium Channel Blocker Overdose, Schizophreniform Disorder, Illness Anxiety Disorder, Fracture Healing Stages, Minoxidil, and Costochondritis more lightly than its strongest areas. A targeted read of First Aid or Boards & Beyond for those topics is usually all it takes.
What is AnKing's strongest subject area for Step 1?
AnKing covers Biochemistry, Immunology, Microbiology, General Pathology, and General Pharmacology most fully — these are the areas where the deck is both comprehensive in breadth and deep in card density. That depth is a deliberate design choice: the deck spends many cards per concept in these high-yield domains, building the kind of durable recall that translates directly to Step 1 performance. Students who are strong in these subjects after AnKing review typically report the highest confidence gains heading into dedicated prep.
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