If you are preparing for the Diploma in Occupational Medicine (DOccMed) and wondering whether you have done enough questions, this is the hub article for that single decision. It is a checklist, not a study timetable. It tells you the minimum evidence you should be able to show — across coverage, format, recency and unseen performance — before you conclude you have covered the blueprint and can safely stop drilling new items. Child articles about individual DOccMed platforms link up to this page; this is the shared standard they measure against.
The short answer: what "covered" actually means for DOccMed
You have covered DOccMed when you can produce four things, not one. First, a blueprint coverage table showing you have attempted and reviewed questions across every syllabus domain, not just the ones you enjoy. Second, evidence of deliberate practice in the exam's actual format — best-fit single-best-answer items under time. Third, a recency check confirming your knowledge of guidance-sensitive topics is current and UK-specific. Fourth, and decisively, a stable first-attempt accuracy on unseen, timed, mixed blocks. A high overall bank percentage is none of these; it is often just familiarity with items you have already seen. Until you can show all four, you have not covered the blueprint — you have practised part of it.
The DOccMed exam snapshot (verified)
The DOccMed is run by the Faculty of Occupational Medicine (FOM). It has two assessed components plus a prerequisite approved training course, so "covering the blueprint" for the MCQ is necessary but not sufficient for the diploma as a whole.
The MCQ paper, per the current FOM regulations (verify on fom.ac.uk, checked 21 July 2026), typically comprises around 80 best-fit questions — stems with up to five options, select the best possible fit — over 1 hour 45 minutes, with no negative marking. The portfolio and oral component requires two written reports totalling about 1,500–2,000 words (one clinical case, one workplace assessment) plus a 20-minute oral with two examiners, passed at an aggregate of 50% or more. MFOM Part 1 exempts the MCQ. There is an important honesty point for planning: the FOM does not publish a full specimen MCQ paper. It publishes a short set of illustrative "best fit" example questions (a handful of items, dated November 2023) and a portfolio template — useful for understanding the format, but far too few to use as a mock. That scarcity is precisely why a coverage checklist matters: you cannot outsource the judgement of "have I covered it?" to an official paper, because none exists.
Build a blueprint coverage table
The single most useful artefact in DOccMed preparation is a coverage table you maintain yourself. The FOM does not publish numeric per-topic weightings for the DOccMed MCQ, so the weights below are a planning estimate derived from the published syllabus, the FOM recommended reading and the structure of approved courses — not an official blueprint. Treat them as your own map, and adjust to your training.
| Domain | Your planning weight | Questions attempted | First-attempt accuracy | Last reviewed | Confidence (H/M/L) |
|---|---|---|---|---|---|
| Fundamentals of OH practice (the OH consultation, records, report writing, confidentiality) | ~10% | ||||
| Law and ethics (Equality Act 2010, HSWA 1974, COSHH, RIDDOR, Management Regs, consent) | ~15% | ||||
| Fitness for work and pre-placement assessment (incl. safety-critical and driving standards) | ~15% | ||||
| Effects of work on health: physical, chemical, biological, ergonomic and psychosocial hazards | ~15% | ||||
| Effects of health on work: chronic disease, mental health, rehabilitation, sickness absence, return to work | ~12% | ||||
| Health surveillance and biological monitoring (audiometry, spirometry, skin, HAVS, sensitisers) | ~10% | ||||
| Occupational disease recognition and notification (asthma, dermatitis, cancers, RIDDOR, IIDB) | ~8% | ||||
| Risk assessment, exposure limits and the control hierarchy | ~6% | ||||
| Immunisation, infection at work and travel (sharps, blood-borne viruses, food handlers) | ~5% | ||||
| Health promotion, workplace wellbeing and OH service governance | ~4% |
Fill every cell before you decide you are finished. Empty rows are your content gaps made visible; a domain with high attempts but low accuracy is a competence gap, not a coverage gap, and needs teaching rather than more questions.
Ten domain-level blind spots self-selected practice hides
When you choose your own questions, you drift toward what you already half-know. These ten areas are the ones most likely to remain hidden — verify each with exam-specific clinician review before you conclude you have covered them:
- The precise duties and limits of the Equality Act 2010 in a fitness-for-work opinion (adjustments versus restriction versus redeployment).
- RIDDOR reportability — which diseases and events are reportable, by whom, and in what timeframe.
- The distinction between statutory health surveillance and general health screening, and when each is lawfully required.
- Workplace exposure limits and the hierarchy of control applied to a named hazard, not recited in the abstract.
- Fitness standards for safety-critical roles (driving, working at height, confined spaces) and how a specific condition maps to them.
- Consent, confidentiality and the boundaries of the OH report to an employer.
- Occupational asthma versus work-exacerbated asthma — recognition, investigation and the medico-legal consequences of the label.
- Biological monitoring interpretation (for example, blood-lead or urinary metabolites) and the action a result triggers.
- Pregnancy and new/expectant mothers at work — the specific risk-assessment obligations.
- Ill-health retirement and pension-scheme criteria, which candidates rarely rehearse until they meet them in the exam.
Format checklist: legislation, surveillance, ethics, risk assessment
Coverage of a topic is not the same as coverage in the exam's format. Confirm you have done deliberate, timed, best-fit practice specifically on: UK occupational legislation applied to a vignette (not recalled as a list); health surveillance scenarios where you choose the correct modality and interval; workplace ethics dilemmas where two options are defensible and one is best; and risk-assessment items where you apply the control hierarchy to a concrete exposure. These four categories carry disproportionate marks and are exactly where knowledge that feels secure in prose collapses into a wrong best-fit choice under time.
Interpretation checklist: images, data and calculations
DOccMed is predominantly applied-knowledge MCQ rather than image-heavy, but do not assume interpretation is absent. Confirm you can handle: audiogram and spirometry patterns and the surveillance action they prompt; simple exposure or dose calculations and unit handling; laboratory trends in biological monitoring; and the numerical and ethical reasoning behind screening decisions (sensitivity, specificity and the harm of false positives in a workforce). Where a topic genuinely does not appear in the DOccMed blueprint, mark it "not applicable" rather than leaving it ambiguous — an explicit "not tested" is part of a defensible coverage record.
Recency checklist: guidance-sensitive topics
Occupational medicine sits on shifting legal and clinical ground. For every guidance-sensitive topic, record the date and jurisdiction of the source you learned it from, because an out-of-date rule is worse than a gap — it is a confident wrong answer. Flag and re-verify: current fitness-to-drive standards; the latest fitness and adjustment guidance; any updated exposure limits; immunisation schedules and post-exposure protocols; and the current statutory framework, all confirmed against UK sources. For any medicines detail, use the SmPC/eMC and NICE/CKS rather than memory. If your notes cannot tell you when and where a fact came from, treat it as unverified until you re-source it.
Performance checklist: unseen, timed, mixed
This is the section that actually decides whether you can stop. Confirm all of the following on genuinely unseen items: a stable first-attempt accuracy at or above your target on timed, mixed blocks; pacing comfortably inside the exam's rate of a little over a minute per question; no cluster of high-confidence errors (the most dangerous pattern, because you will not slow down for answers you are sure of); retention across a one-to-two-week gap, not just same-day recall; and calibration against whatever official material exists — here, the FOM's small example set for format, and your own unseen mocks for volume. Your overall bank percentage is not on this list on purpose; as the companion article explains, it is not your exam score.
The stop/continue decision tree
Use the measured gap, not novelty or how many questions remain, to choose your next action:
- Continue doing new questions if any domain row is empty or below its accuracy floor. You have a coverage gap; close it with unseen items.
- Consolidate (stop adding, start reviewing) if coverage is complete but you carry repeat errors on the same principles. You do not need more questions; you need to fix the recurring fault.
- Simulate if coverage and accuracy are adequate but pacing is slow or nerves dominate. Sit full-length, timed, mixed mocks under exam conditions.
- Seek teaching if a domain shows high attempts and stubbornly low accuracy. More questions will not teach you a concept you have never understood; a supervisor, course or textbook will.
- Rest if performance is stable at target across the blueprint and further drilling is anxiety management. Protect the retention you have earned.
The one-page checklist (copy this)
Print or copy the following and tick each before you stop doing new DOccMed questions:
- Coverage table complete: every domain has attempts, accuracy and a last-reviewed date.
- No empty rows and no domain below its first-attempt accuracy floor.
- Deliberate, timed, best-fit practice done on legislation, surveillance, ethics and risk assessment.
- Interpretation items (audiometry, spirometry, calculations, biological monitoring) attempted or marked not-applicable.
- Every guidance-sensitive fact carries a date and a UK jurisdiction.
- Unseen, timed, mixed-block accuracy stable at target across at least two sittings.
- Pacing inside exam rate; no cluster of high-confidence errors.
- Retention confirmed across a one-to-two-week gap.
- Portfolio and oral progressing separately against the FOM template (the MCQ checklist does not cover them).
A worked example (illustrative data)
Consider a GP, twelve weeks out, whose overall bank percentage is a comforting 82%. The numbers here are invented to show the method. Their coverage table reveals the catch: law and ethics sits at 61% first-attempt accuracy, health surveillance at 58%, and the immunisation row is empty. The 82% is carried by fundamentals and fitness-for-work, where they are strong and have done most of their volume. The checklist verdict is clear: they have not covered the blueprint, despite the high headline. The action is not "keep doing questions" in general; it is targeted — unseen blocks in the two weak domains, first-exposure work on immunisation, then a return to mixed, timed conditions to confirm the fix held. Two weeks later their overall percentage has barely moved, to 84%, but their unseen mixed-block accuracy in the weak domains has climbed from the high 50s to the low 70s. That second number, not the first, is the one that says they are closer to ready.
Frequently asked questions
How do I know whether I have covered the full DOccMed blueprint? You know when your coverage table has no empty rows and no domain below its accuracy floor, because there is no official specimen paper to tell you for you — the FOM publishes only a short set of example questions, not a mock. The table is the substitute: it forces you to confront the domains you have been avoiding. Until every row carries attempts, first-attempt accuracy and a last-reviewed date, "covered" is an assumption, not evidence, however high your overall percentage looks.
Can one question bank be enough for DOccMed? A single, well-built bank can carry the bulk of your learning, but it cannot honestly measure you, because once you have worked through it every item is a memory test. The DOccMed market is small and no bank publishes a validated blueprint mapping, so relying on one source also risks inheriting its blind spots. Use a primary bank to learn and a second, unseen source to measure — the two-Q-bank rule — with no overlapping items between them, so your readiness number comes from questions you have never seen.
What should I measure instead of my overall Q-bank percentage for DOccMed? Measure first-attempt accuracy on unseen, timed, mixed blocks, broken down by domain; pacing against the exam's rate; the size and location of your high-confidence error cluster; and retention across a one-to-two-week interval. These tell you what you would score on the day; your cumulative bank percentage tells you mostly how many questions you have re-seen. The distinction is the whole point of the companion article, "Your Q-Bank Percentage Is Not Your Exam Score."
When should I stop doing new DOccMed questions? Stop when the performance checklist is fully satisfied on unseen items — stable accuracy at target across every domain, clean pacing, no high-confidence error cluster and confirmed retention — and not before, even if it feels like you have "done loads." Equally, do not keep going purely because unanswered items remain; drilling a blueprint you have already mastered is sunk-cost behaviour that trades useful rest for the illusion of progress. The trigger to stop is measured adequacy, in both directions.
Which DOccMed resource should I use for my weakest component? Match the resource to the gap type. For a coverage gap, use unseen questions across that domain from a bank you have not exhausted. For a competence gap — high attempts, low accuracy — go to teaching: an approved course, a supervisor, or the FOM recommended reading, because more questions cannot install a concept you have never grasped. For the portfolio and oral, which no MCQ bank reproduces, work from the FOM portfolio template with your workplace supervisor. Then confirm the fix with a fresh, unseen block.
Editorial notes and references
Written by Dr Kolawole Tytler, NHS GP and founder of iatroX. Last checked 21 July 2026. The domain weights in the coverage table are a planning estimate derived from the published FOM syllabus and recommended reading, not an official FOM blueprint; the FOM does not publish numeric per-topic weightings or a full specimen paper for the DOccMed MCQ. All exam-format facts should be verified on fom.ac.uk. The worked-example figures are invented to illustrate method. Disclosure: iatroX operates a competing UK question bank and an unseen-measurement layer; here its role is confined to supplying the unseen, timed blocks the coverage and performance checklists require, and it does not reproduce the DOccMed portfolio or oral. Corrections are welcome via the feedback route on iatrox.com.
References: FOM DOccMed diploma, regulations and recommended-reading pages (fom.ac.uk); Your Q-Bank Percentage Is Not Your Exam Score; the two-Q-bank rule; question-bank completion is not coverage; the iatroX comparison hub and UK question bank.