The highest-yield PLAB 1 domains are acute and emergency medicine, cardiology, respiratory medicine, endocrinology, gastroenterology, infectious disease, prescribing and pharmacology, and the ethics, law and safety topics that thread through every paper. These reflect both the weighting of the 2026 MLA content map and the conditions a UK Foundation Year 2 doctor manages most often. "High-yield" means most-frequently-tested and decision-relevant — not a complete syllabus, so treat the list below as a prioritisation guide, not a shortcut.
Key takeaways
- High-yield = weighted heavily in the MLA content map and common in real F2 practice.
- Acute/emergency, cardiology, respiratory, endocrine, GI, infectious disease and prescribing dominate.
- Ethics, law, capacity and safeguarding appear across the whole paper — don't treat them as a niche.
- High-yield is a prioritisation aid, not the full syllabus — the exam can test anything on the content map.
- An adaptive bank surfaces your weak high-yield topics, which is more useful than a generic list.
How is "high-yield" defined here?
Two things make a topic high-yield. First, its weighting in the GMC's 2026 MLA content map — the blueprint of 430 conditions and the presentations and themes the exam is built from. Second, clinical frequency: PLAB 1 is pitched at the level of an F2 doctor, so the conditions you'd actually meet on an acute take or in a GP surgery come up disproportionately. A topic that is both heavily mapped and clinically common is where your early revision hours pay off most.
The honest caveat: high-yield is not exhaustive. The exam can draw from anywhere on the content map, and over-narrowing your revision is a real risk. Use the high-yield domains to sequence your prep — strong foundations first — not to decide what you're allowed to skip.
The high-yield domains
| Domain | Why it's high-yield | Examples |
|---|---|---|
| Acute & emergency medicine | Decision-heavy, safety-critical, F2-relevant | Sepsis, anaphylaxis, the acutely unwell patient |
| Cardiology | High map weighting, common presentations | ACS, heart failure, atrial fibrillation |
| Respiratory | Common acute and chronic disease | Asthma, COPD, pneumonia, PE |
| Endocrinology & metabolic | Frequent, with classic emergencies | Diabetes, DKA, thyroid disease |
| Gastroenterology | Common presentations and emergencies | GI bleed, liver disease, IBD |
| Infectious disease | Cross-cutting and topical | Sepsis, common infections, antimicrobial choice |
| Prescribing & pharmacology | Tested throughout, safety-focused | Dosing, interactions, contraindications |
| Psychiatry | Significant map weighting | Depression, risk assessment, dementia/delirium |
| Ethics, law & safeguarding | Threads through every paper | Capacity, consent, confidentiality, safeguarding |
How to drill these without neglecting the rest
Sequence, don't tunnel. Build a solid foundation across the high-yield domains first, then widen to full content-map coverage in your volume phase. Two practical rules: review every wrong answer until the reasoning is clear, and for prescribing questions get into the habit of checking the underlying reference — clinicians use the BNF for UK medicines guidance, while exam explanations should ground the answer in the relevant NICE, CKS or SIGN recommendation. The aim is to learn the UK pathway, not just the fact.
How a question bank surfaces your high-yield gaps
A generic high-yield list is a starting point; what actually moves your score is knowing which high-yield topics you are weak on. That's where an adaptive bank earns its place: rather than working through a fixed order, it concentrates your time on the high-yield areas you're getting wrong.
iatroX does this directly — its adaptive engine surfaces your weak high-yield topics, its Socratic Tutor works through the clinical reasoning rather than just the answer, and Ask iatroX lets you confirm management against UK guidance (NICE, CKS, SIGN and the SmPC). Its explanations are mapped to the 2026 MLA content map, and you can drill specific systems through the UKMLA Academy. iatroX covers PLAB 1 and UKMLA on one subscription (£29/month or £99/year), with free sample questions.
Frequently asked questions
What are the most high-yield topics for PLAB 1? Acute and emergency medicine, cardiology, respiratory, endocrinology, gastroenterology, infectious disease, prescribing and pharmacology, and ethics/law/safeguarding. These are both heavily weighted in the MLA content map and clinically common at F2 level.
Does PLAB 1 test the same topics as the UKMLA AKT? Yes. Since the GMC aligned both to the MLA content map, the high-yield topics are the same — the exam is the same standard whether you sit it as PLAB 1 or the UKMLA AKT.
Can I just revise the high-yield topics and pass? It's risky. High-yield topics are where to start, but the exam can test anything on the content map, so narrow your revision at your peril. Use high-yield to sequence your prep, then aim for full coverage.
How do I know which high-yield topics I'm weak on? A practice bank with performance tracking shows you; an adaptive bank goes further and automatically resurfaces the high-yield topics you're getting wrong, which is more efficient than guessing.
Is prescribing heavily tested in PLAB 1? Yes. Prescribing and medicines safety are tested throughout — dosing, interactions, contraindications and appropriate first-line choices — so build the habit of checking the underlying guidance for every prescribing question.