Overlap between MRCEM MSRA and MRCS exams

TL;DR. If you are sitting two of MRCEM Primary, MRCS Part A and the MSRA in the same recruitment cycle, the only meaningful syllabus overlap is between MRCEM Primary and MRCS Part A, and it sits almost entirely in regional anatomy and applied physiology. The MSRA shares almost nothing with the basic-sciences content of either postgraduate exam; the only loose crossover is the broad clinical knowledge tested in the MSRA Clinical Problem Solving paper, which leans on FY-level medicine and prescribing. Recycle revision time where you can, but do not sit all three unless your career plan genuinely demands it.

flowchart TD
    Shared([Shared topics]) --> S1[Acute presentations
Sepsis, shock, ALS]
    Shared --> S2[Trauma basics
ATLS principles]
    MRCEM([MRCEM unique]) --> M1[EM-specific SBAs
OSCE clinical skills]
    MSRA([MSRA unique]) --> M2[Professional dilemmas
Clinical problem solving]
    MRCS([MRCS unique]) --> M3[Applied basic science
Surgical skills]

Why this question keeps coming up

F2, IMT-1 and CT1 doctors are often asked to commit to a specialty before they have actually decided. The result is a familiar pattern: a doctor applies to GP, Anaesthetics or Psychiatry through the MSRA as a backstop, sits MRCEM Primary because EM looks attractive, and books MRCS Part A because surgery is still on the table. Three exam fees, three revision plans and an exhausting twelve months. The honest question is not whether you can do all three; it is whether the syllabuses overlap enough to make doing two of them a sensible bet.

What does each exam actually test?

The three exams sit in different educational traditions and it shows in the blueprints.

• MRCEM Primary is a 180-question SBA paper sat over 3 hours. Anatomy and physiology each take roughly a third of the paper, with pharmacology, microbiology, pathology and a small evidence-based medicine slice making up the remainder. It is a basic-sciences exam mapped to the RCEM Basic Sciences Curriculum and the EM 2021 Curriculum.
• MRCS Part A is a 5-hour, two-paper SBA assessment sat on the same day. Paper 1 (3 hours) is Applied Basic Sciences and Paper 2 (2 hours) is Principles of Surgery in General. Anatomy is the single largest component and the paper expects deeper regional and operative anatomy than MRCEM Primary, alongside pathology, physiology and surgical principles.
• MSRA is a 170-minute computer-based exam in two parts. The Clinical Problem Solving paper (75 minutes, 97 questions) covers 12 broad clinical specialties at FY-grade depth, with the assessed competencies being investigation, diagnosis, emergency recognition, prescribing and non-prescribing management. The Professional Dilemmas paper (95 minutes, 50 questions) is a situational judgement test scored across empathy and sensitivity, coping with pressure, and professional integrity. There is no anatomy, no detailed physiology and no basic pharmacology theory.

Do MRCEM Primary and MRCS Part A overlap?

Yes, and this is where the time saving lives. Both exams test applied basic sciences at postgraduate depth, and a candidate who has revised one is already part-way through the other. The strongest overlap is regional anatomy: upper limb, lower limb, thorax, abdomen, head and neck, and central nervous system are core to both blueprints. Physiology overlaps too, particularly cardiovascular, respiratory, renal and gastrointestinal modules, although MRCEM Primary asks slightly more about acute and resuscitation physiology and MRCS Part A asks slightly more about perioperative physiology, fluid balance and surgical haematology.

The honest mismatch is in emphasis. MRCS Part A wants you to know operative and surface anatomy in detail (think safe approaches, danger zones, named branches). MRCEM Primary wants you to know anatomy at the level of an EM SHO clerking a trauma call or doing a nerve block. The base material is the same; the framing differs.

Does MSRA prep help with MRCEM Primary?

Hardly at all for the Primary. The MSRA Clinical Problem Solving paper is closer in feel to a UK final medical school MCQ than to a basic-sciences paper, and the Professional Dilemmas paper is a situational judgement test. Neither will move the needle on anatomy, physiology or basic pharmacology. The one direction this does work is the reverse: a doctor who has passed MRCEM Primary often finds the small pharmacology and microbiology questions on the MSRA CPS straightforward, simply because they have just done the basic-science grind.

If you are sitting MSRA for ACCS-EM, your MRCEM Primary preparation is best treated as a separate workstream, not as MSRA revision in disguise.

Does MSRA prep help with MRCS Part A?

The same answer applies, with an extra caveat. MRCS Part A Paper 2 (Principles of Surgery in General) tests perioperative care, trauma assessment, critical care, common surgical presentations and the management of surgical patients, and a small amount of this maps onto MSRA CPS clinical scenarios. It is a marginal benefit. The basic-sciences paper (Paper 1) will not be helped by MSRA prep at all.

Overlap mapping table

The table below maps the main knowledge domains across the three exams and gives a rough recyclability score (how much revision time spent on that domain for one exam carries over to another).

Read the table this way. If you have already passed MRCEM Primary and you sit MRCS Part A next, expect the top two rows to be largely recycled and the rest to need fresh time. If you have already done MSRA, expect almost no carry-over into either postgraduate exam.

Which order should I sit them in?

There is no universally correct order, but a few rules of thumb apply.

• If you are committed to EM, sit MRCEM Primary first because it is mandatory for progression and the basic-sciences depth makes other exams easier afterwards. Sitting MRCEM Primary before your ST1 interview is reasonable for some candidates and discussed separately.
• If you are committed to surgery, sit MRCS Part A first for the same reason; it is required for progression in Core Surgical Training.
• If you are genuinely undecided between EM and surgery, MRCEM Primary is the cheaper first move because the question style is slightly more forgiving and the anatomy depth required is shallower. MRCS Part A built on top of MRCEM Primary is a smaller incremental step than the reverse.
• The MSRA is dictated by recruitment timing rather than choice. If you apply through a specialty that uses it, you sit it in the January or February window of the application year.

Can I share revision time across all three?

Partially, but not as much as you might hope. A dual MRCEM Primary and MRCS Part A campaign can realistically share anatomy and physiology revision; you would use one anatomy resource (Last’s Anatomy or Gray’s Essentials, plus a regional atlas) and one physiology resource and simply layer exam-specific question banks on top. Pharmacology, microbiology and pathology need exam-specific revision because the framing diverges.

Trying to share with the MSRA mostly does not work. The MSRA rewards rapid pattern recognition from FY-grade medicine plus the SJT mindset; the postgraduate exams reward depth in a narrower body of basic sciences. They are different cognitive tasks. A typical pattern that does work is to finish MRCEM Primary or MRCS Part A first and then run a short, focused 6 to 8 week MSRA campaign using a dedicated question bank in the weeks before the test window.

Sample dual-prep schedule for the genuinely undecided

This is a worked example, not a prescription. Assume a doctor in F2 or IMT-1 who is undecided between EM and surgery, with MRCS Part A booked in late spring and MRCEM Primary booked in summer, with the MSRA already sat in February for a backstop specialty.

1. Weeks 1 to 4. Anatomy foundation. One regional atlas plus one anatomy SBA bank with MRCS-style questions, because they are the more demanding. Topics: upper limb, lower limb, thorax.
2. Weeks 5 to 8. Anatomy continued (abdomen, head and neck, CNS) plus physiology foundation (cardiovascular, respiratory, renal).
3. Weeks 9 to 12. Physiology completion (GI, endocrine, basic cellular) plus pathology for MRCS Part A. Begin MRCS-specific Paper 2 reading (perioperative, surgical infection, trauma).
4. Weeks 13 to 16. MRCS Part A taper. Heavy SBA practice in MRCS-style banks. Sit MRCS Part A at the end of this block.
5. Weeks 17 to 20. Pivot to MRCEM Primary. Pharmacology, microbiology and the EBM slice are now the main targets because anatomy and physiology have already been done. Switch to MRCEM-style SBA banks for question practice.
6. Weeks 21 to 24. MRCEM Primary taper, full mocks, sit the exam.

This schedule recycles roughly 50% of the anatomy and physiology load and treats the rest as exam-specific. Twenty-four weeks is honest for a working doctor; doing it faster usually means doing it worse.

Is sitting all three actually a good idea?

Often it is not. Each exam is a real cost in study time, exam fees, anxiety and opportunity. MRCS Part A and MRCEM Primary are each meaningful undertakings, and the MSRA, while shorter, eats a January and a February of your year. Sitting all three only makes sense if you genuinely have three credible career options on the table and you are using the exams to keep doors open for a known recruitment deadline. Career indecision is normal at this stage and is not a failure mode, but exam-stacking is not the cure for it. A career conversation with an educational supervisor or a postgraduate dean often does more than a third question bank subscription.

If you can narrow to two specialties before you start booking exams, do so. If you cannot, sit the exam that the specialty you would actually take at interview requires, and treat the others as optional.

Practical takeaways

• MRCEM Primary and MRCS Part A genuinely overlap in anatomy and physiology; treat these as shared workstreams if you are doing both.
• The MSRA is a separate cognitive task and should be revised separately, ideally in a short focused block before the test window.
• Order matters: do the exam your committed specialty requires first; if undecided, MRCEM Primary first is usually the cheaper move.
• Do not sit all three out of indecision. Use a career conversation first and an exam booking second.

Authoritative sources

• RCEM — Exam calendar and fees
• Federation of the Royal Colleges of Physicians of the UK — MRCP(UK)
• Intercollegiate Surgical Curriculum Programme (ISCP) — MRCS curriculum and exam information
• Intercollegiate MRCS — Part A and Part B information
• NHSE / MSRA — Multi-Specialty Recruitment Assessment
• Health Education England — Medical recruitment
• Oriel — NHS recruitment portal (specialty applications)

Facts last verified 30 May 2026.

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