If you want a single answer to "which PLAB 1 resource is best", the honest reply is that the question is under-specified. The right resource depends on how many weeks you have, what you can spend, and which part of the applied-knowledge test is actually failing you. This article is a decision tree for PLAB 1: measure your profile first, then follow the branch that fits. It is written for international medical graduates preparing for the General Medical Council's Part 1, and it treats iatroX as the measurement input, not the answer.
Start here: measure before you choose
Every good PLAB 1 decision starts with a number you can trust. Before you buy anything, sit one fresh, timed, mixed block of 50 to 60 unseen single-best-answer items at exam pace, roughly a minute per item, drawn across the content map rather than from your favourite systems. That gives you four measurable inputs the rest of this tree runs on: your blueprint-coverage gap (which areas of clinical practice you have barely touched), your unseen-score trend (are fresh, timed blocks rising, flat or falling across two to three weeks), your weeks-to-exam, and your dominant error type (a genuine knowledge gap, a misread stem, UK-context management, pacing, or careless slips). Do not skip this. Buying a resource before you have measured yourself is how candidates end up owning three overlapping banks and still leaking marks on the applied, next-best-step questions that were never their strength.
The minimum PLAB 1 stack
Most candidates need far less than they buy. The minimum viable stack is four things, and often you can omit the last two:
- One primary question bank, worked to a measured target rather than to 100 per cent completion.
- The GMC's official calibration material: the PLAB 1 guidance, the published sample questions and the Medical Licensing Assessment content map (updated January 2026, applying from September 2026). This is free and non-negotiable, because it is the only source that shows you the real format, the real blueprint and the GMC's own idea of a fair question.
- One teaching or reference source, and only where an area is genuinely unfamiliar rather than merely rusty.
- One modality tool for a specific weakness — for example, focused UK-prescribing or ethics practice if that is where your errors cluster.
If you already know your medicine and simply need reps, pace and UK-context calibration, the last two are noise. Adding resources you will not finish is a cost, not a hedge.
Segment yourself first
Six profiles cover almost everyone. Find yours before you look at platforms.
- First attempt, sound foundations. You need volume, timing and blueprint breadth, not teaching. Branch: one bank plus GMC material plus unseen measurement.
- Retaker. Your priority is diagnosing why you missed the mark last time. If your unseen-score trend was flat, the problem is usually coverage, pace or UK-context management, not effort. Branch: targeted areas plus timed mixed mocks, not a fresh cover-to-cover pass of a new bank.
- International graduate strong on content but new to UK conventions. You know the medicine but not how the exam expects it applied: NICE and CKS thresholds, safety-netting, consent and capacity, GMC ethics, and NHS referral norms. Branch: a UK-mapped bank plus GMC ethics and prescribing material, with the emphasis on convention rather than facts.
- Weak foundations or long time out of acute practice. You genuinely need teaching first. Branch: a teaching or textbook source for four to six weeks, then convert to retrieval.
- Strong knowledge, poor pacing. Your accuracy is fine untimed and collapses at exam speed. Branch: timed blocks and full 180-item mocks only; more content will not help.
- Strong at recall, weak on applied management. You answer factual items well but stumble on the next-best-step, prioritisation and "most appropriate" stems that PLAB 1 favours. Branch: management-weighted question practice against current UK guidance — and note that if your real gap is clinical or practical skills rather than written decisions, that belongs to PLAB 2 and the clinical and professional skills assessment, not to more PLAB 1 tools.
Budget bands (verify every price on the day you buy)
Prices below are vendor-reported and were checked on 19 July 2026; confirm the current figure on each product page before purchase, because PLAB vendors change tiers and currencies between windows.
- Free or low-cost. The GMC's PLAB 1 guidance, sample questions and MLA content map cost nothing and are the format and blueprint gold-standard. iatroX free UK-core practice gives you unseen, timed, MLA-mapped items for measurement. Several vendors also publish free sample sets and trials. For a candidate with sound foundations and eight-plus weeks, this plus one modest paid bank is often enough.
- One premium resource. Pick a single bank matched to your weakest need. As vendor-reported examples on 19 July 2026: Quesmed listed a PLAB 1 plan around £30 for three months and pairs the bank with a "Complete PLAB Textbook"; MedRevisions listed adaptive PLAB 1 and UKMLA AKT access from about US$10.83 per month; PLABable and Pastest price separately — verify the current tier on each page.
- Comprehensive stack. One teaching source plus one bank plus GMC material plus an unseen measurement bank. The guardrail here is discipline: buying two or three banks that all test the same common presentations wastes money and destroys the comparability of your scores.
Time bands: what to omit, not what to add
- Under four weeks. Omit new teaching courses and any fresh cover-to-cover bank. Do timed mixed blocks, the GMC sample questions, at least one full 180-item timed mock, and misses only. The goal is calibration and pace, not new coverage.
- Four to twelve weeks. Work one bank to a blueprint target, space your misses, run one full timed mock roughly weekly in the back half, and drill your weakest area. Add teaching only for a topic you genuinely do not know.
- More than twelve weeks. Spend the first four to six weeks on foundations if you need them, then shift decisively to retrieval and timed mocks. Introduce a second, unseen bank late, purely to measure transfer, not to double your reading.
The platform-to-job decision matrix
Each PLAB 1 resource has a job it does best. Match the job to your gap; do not buy the whole toolbox.
| Resource | Best job for PLAB 1 | Watch-out |
|---|---|---|
| PLABable | High-volume, PLAB-specific bank with an active candidate community and recall-informed items | No adaptive engine; verify current count and price on the page |
| Quesmed | Bank plus an integrated "Complete PLAB Textbook" for candidates who want teaching in one place | Textbook time competes with retrieval hours; verify current count and price |
| MedRevisions | Adaptive analytics and an AI readiness signal on MLA-mapped SBAs | Adaptive percentages need an unseen check; verify tiers and currency |
| Pastest | Established UK bank with mocks and analytics; familiar interface | Confirm current PLAB 1 coverage, count and price on the page |
| GMC sample questions + MLA content map | Format and blueprint calibration; the free gold-standard | Finite volume — cannot carry your whole revision |
| iatroX | Unseen, timed, mixed, MLA-mapped measurement; the transfer layer | Does not replace a full teaching course or the GMC's own materials |
Cannibalisation guardrail
This article is the exam-level hub for one decision: which resource, for whom. It deliberately does not re-run the detailed evidence for each platform. For a component-by-component look at coverage, counts, analytics and price, follow the narrow child audits and the side-by-side view on the iatroX comparison hub rather than expecting this page to duplicate them. Keep the hub for the decision and the children for the detail; that division stops the same platform description being rewritten five times and keeps your reading honest.
Three worked candidate profiles
Ahmed, first attempt, eight weeks out, strong clinical knowledge, new to UK conventions, budget for one premium resource. His baseline shows solid accuracy on factual items but recurrent errors on safety-netting, referral thresholds and consent stems. He does not need a second content bank. Weekly allocation: four timed mixed blocks of about 50 items each plus full explanation review, one focused session on UK ethics and prescribing against GMC material, and one full 180-item timed mock in weeks six and eight. Exit criteria: unseen-score trend flat-or-rising for two weeks and his UK-convention error rate halved. Cost: one premium bank plus free GMC material.
Grace, retaker, five weeks out, plateaued unseen score, pacing plus two weak areas. The temptation is to buy a new bank and start again. Her measured problem is pace and two areas of clinical practice, so a fresh cover-to-cover pass would waste the five weeks. Weekly allocation: daily 20-minute timed sprints to fix pace, targeted study of the two weak areas only, and two full timed mocks per week for transfer. Exit criteria: comfortably under one minute per item on mixed blocks and both weak areas at her cohort mean on unseen items. Cost: keep the existing bank; add nothing but unseen measurement.
Ravi, long out of acute practice, fourteen weeks out, weak foundations across several systems, needs structure. He genuinely needs teaching, so he runs a comprehensive stack. Weeks 1 to 6: a teaching or textbook source plus one bank at a gentle pace to build coverage. Weeks 7 to 12: convert to retrieval, spacing misses and adding weekly timed mocks. Weeks 13 to 14: unseen measurement and full mocks only. Exit criteria: blueprint-coverage gap closed to fewer than three under-tested areas and a rising unseen trend. Cost: comprehensive, but sequenced so the teaching stops when retrieval starts.
The decision table
| If your measured state is… | Follow this branch |
|---|---|
| High bank percentage but flat unseen, timed trend | Switch to timed, mixed, unseen blocks; your percentage is inflated by familiarity |
| Blueprint gap in three or more areas of clinical practice, 12+ weeks | Teaching or textbook first, then retrieval |
| Pace collapse over one minute per item | Timed blocks and full 180-item mocks only |
| Strong recall, weak applied UK management | Management-weighted items mapped to current NICE and CKS, plus GMC ethics material |
| Under four weeks, sound foundations | GMC sample questions plus full timed mocks plus misses; omit new content |
| Your real gap is clinical or practical skills, not written knowledge | That is PLAB 2 and the CPSA — do not over-buy PLAB 1 banks for it |
Reading your results: three mistakes this tree is designed to stop
First, chasing completion instead of coverage. Finishing 100 per cent of a bank tells you nothing if the bank under-samples your weak areas; a blueprint-coverage matrix tells you what is actually untested against the MLA content map. Second, trusting your bank percentage as a score. It is a familiarity-inflated in-app metric, not an exam prediction; your Q-bank percentage is not your exam score. Third, buying a second overlapping bank for reassurance. If two banks test the same common presentations, you have doubled your cost and destroyed the comparability that made a second bank useful; the two-Q-bank rule exists precisely to prevent that.
Evidence hierarchy
Weight your sources in this order. GMC material first, for format and blueprint. Primary UK guidance next — NICE, CKS, SIGN and the SmPC via the electronic medicines compendium — for clinical content and prescribing. Vendor pages third, for product facts, always labelled as vendor-reported and verified on the day. Independent candidate experience last, for usability signals only, never for coverage claims. When two sources disagree, the official body wins.
Bottom line
There is no universal best PLAB 1 resource; there is a resource that fits your weeks, your budget and your measured weakest component. Measure first, buy the minimum stack that closes your specific gap, keep the GMC's own material at the centre, and use an unseen bank to check that your learning is transferring. The decision tree above is the framework; iatroX is where you generate the baseline that tells you which branch to take.
Frequently asked questions
How do I know whether I have covered the full PLAB 1 blueprint? You cannot tell from a completion bar. Build a coverage matrix that lists the MLA content map's areas of clinical practice and presentations down one axis and, for each, records how many unseen items you have attempted and your accuracy on them. Any area with few attempts or below-mean accuracy is an uncovered gap, regardless of your overall percentage. The content map is the authoritative axis, so map to it rather than to a vendor's own topic list.
Can one question bank be enough for PLAB 1? For many well-prepared candidates with sound foundations, yes — one solid bank plus the GMC's sample questions and content map can be sufficient. A second bank earns its place only when it does a job the first cannot: giving you unseen items to measure transfer, or covering an area your primary bank handles thinly. Adding a second bank that tests the same content is duplication, not depth, and it corrupts the comparability of your scores.
What should I measure instead of my overall Q-bank percentage for PLAB 1? Measure accuracy on fresh, timed, mixed, unseen blocks, broken down by area of clinical practice, and track the trend over two to three weeks. Also measure your pace in seconds per item against the roughly one-minute exam target, and your error type — knowledge, misread stem, UK-context management or careless. These predict exam-day performance far better than a cumulative in-app percentage, which is inflated by repeated exposure to items you have already seen.
When should I stop doing new PLAB 1 questions? Stop adding new questions when your unseen, timed accuracy has been stable at or above your target for about two weeks, your pace is comfortably under a minute per item, and your remaining errors are careless rather than knowledge-based. At that point new volume adds little, and rest, light consolidation and a final full mock add more. Doing questions past the point of learning is reassurance-seeking, not preparation.
Which PLAB 1 resource should I use for my weakest component? Match the tool to the measured gap. For thin blueprint coverage, use a high-volume bank worked against the content map. For weak UK-context management, use guideline-mapped question practice plus the GMC's ethics and prescribing material. For pacing, use timed blocks and full 180-item mocks, not more content. And if your weakness is genuinely clinical or practical rather than written knowledge, that is a PLAB 2 and CPSA problem — no PLAB 1 bank will fix it, so do not buy one expecting it to.
Editorial notes and references
Written by Dr Kolawole Tytler, NHS GP and founder of iatroX. Last checked 19 July 2026. Prices, question counts and features quoted here are vendor-reported figures that change between exam windows; verify the current figure on each product page before you buy. Disclosure: iatroX operates a competing PLAB 1 question bank, so this article confines iatroX's role to unseen measurement and baselining — a job the resources above do not claim — rather than ranking it against them. Corrections are welcome via the feedback route on iatrox.com.
References: General Medical Council, PLAB 1 guidance, sample questions and the Medical Licensing Assessment content map (gmc-uk.org); vendor product pages for PLABable, Quesmed, MedRevisions and Pastest (accessed 19 July 2026); iatroX, "Your Q-Bank Percentage Is Not Your Exam Score", "Question-Bank Completion Is Not Coverage" and "The Two-Q-Bank Rule" (iatrox.com/blog); iatroX PLAB 1 hub and comparison pages (iatrox.com/plab-1, iatrox.com/compare).