The CPST is worth 10% of your final ranking in the ICGP's GP training selection process, but that figure is easy to misread. Unlike the SJT, the CPST is a pass or fail hurdle first: fall short of the Ebel-set pass mark and your score is never calculated at all, whatever the rest of your application looks like. Most candidates prepare for the CPST as though it works like the SJT, weighting their effort to the ranking percentage, when the real priority is clearing the hurdle itself.
This guide assumes you already know roughly what the CPST is (50 single best answer questions, 60 minutes, five options each, sat immediately after the SJT), covered in the full format and standard guide if you need that first. What follows is how to actually prepare: a diagnostic built around the three official question types, how much time this genuinely deserves, the standard you're tested against, three study timelines, a worked practice example, and the mistakes that quietly cost marks every cycle.
Key takeaways
- There's no compensation between the two tests. A high SJT score can't rescue a failed CPST, which is why the pass mark deserves real study time despite the modest 10% weighting.
- Diagnose by question type, not topic. The three official item types (diagnostic, investigation, management) each fail for a different reason, and a short diagnostic shows which one is actually costing you marks.
- The CPST is set at intern level, not GP or membership level. Studying MRCGP or MICGP material is a common, costly mistake since it targets a standard years above what's tested.
- Timing discipline matters as much as knowledge. At 72 seconds a question, a firm 90-second bail rule beats chasing one hard question at the cost of two easy ones later.
- GP Journey's 1,500+ question CPST bank mirrors the real single best answer format with full explanations, sorted by question type to match whatever your diagnostic turns up.
The CPST rewards breadth at intern level, not depth in any one specialty. A candidate who reliably recognises and safely sequences a response to common presentations across the board will consistently outscore someone who has gone deep on a handful of topics they find interesting. Build your plan around coverage first, difficulty second.
How Much Time Do You Actually Need?
Most candidates prepare successfully for the CPST in three to six weeks of focused practice, considerably less runway than the SJT usually gets. That's not because the CPST matters less. It's because clinical knowledge revision compounds faster than judgement-based reasoning does, and because the CPST rewards breadth over depth: reliable coverage of common intern-level presentations, not deep knowledge in a handful of areas.
Below are three real starting points. For the 2027 intake, the SJT and CPST are sat across Wednesday 4 and Thursday 5 November 2026, taken consecutively in the same sitting, so run your CPST preparation in parallel with your SJT preparation rather than after it.
Start With a Diagnostic
Before you commit to a timeline, spend 20–30 minutes finding out where you actually stand, and diagnose by question type rather than by medical topic. Attempt 10–15 CPST-style questions untimed, then mark each miss against which of the three official item types it was.
Diagnostic items, where you identify the most likely diagnosis and the trap is missing the one discriminating detail buried in the stem. Investigation items, where you choose the most appropriate next investigation and the trap is picking something reasonable but not immediate. Management items, where you choose the most appropriate immediate step and the trap is usually getting the sequencing wrong, treating before stabilising, or deciding before escalating.
This matters more for the CPST than a topic-based breakdown would. Two candidates can both correctly diagnose the same condition and still lose marks in completely different ways once the question asks what to do next. Knowing which of the three types is actually costing you marks tells you what to drill, not just what to read.
1,500+ CPST questions. Real single best answer format. Full explanations.
Now that you know which question type is costing you marks, GP Journey's CPST bank mirrors the real 50-question, single best answer format, sorted by diagnostic, investigation and management items, with a full expert explanation for every option, so you can drill exactly where your diagnostic showed the gap.
HSE TSS eligible · most Irish hospitals cover the full costWhat "Intern Level" Actually Means
The single most avoidable mistake in CPST preparation is studying at the wrong standard. The ICGP sets the CPST at the level of a current intern, not a GP, not a registrar, and not MRCGP or MICGP membership level. Questions describe common presentations a recently qualified doctor might encounter and test whether you can diagnose, investigate and manage them safely, not whether you can manage them the way an experienced GP would in a community setting.
Candidates routinely reach for membership-level resources on the theory that preparing above the standard adds a safety margin. It doesn't. Membership material is pitched years above what's tested, built around general practice rather than intern-level hospital medicine, and it burns time that would move your score further if spent on CPST-style single best answer practice instead.
A useful mental check: if a question feels like something you could have been asked on a ward round during your intern year by a registrar who was teaching rather than testing, that's the right level. Common presentation, clear decision point, five plausible options, one that's clearly the most appropriate next step.
Three Study Plans, by Timeline
Each plan follows the same shape: cover the breadth of intern-level presentations, build volume by question type, tighten under time pressure, and taper before test day. Each one is compressed to fit however many weeks you actually have.
| Timeline | Early stretch | Middle stretch | Final days |
|---|---|---|---|
| 6 weeks out | Revise the common intern-level presentations broadly: acute chest pain, sepsis, GI bleeding, and similar core topics | 30–40 questions/week rising, mixed across all three item types, timed blocks from week 3 | One or two full timed 50-question sets, review fully, then stop |
| 3 weeks out | Skip broad revision. Go straight to daily single best answer practice, 15–20/day, sorted by item type | One full timed 60-minute set every 2–3 days, review every explanation the same day | One final timed set, light review, protect sleep over extra volume |
| 1 week out | Skip topic revision entirely. Go straight to a daily timed 50-question set | Review the same day, every time, focused on whichever item type is weakest | One final light review session, no new questions |
A shorter runway means less revision, not less review. Reviewing by item type is what actually closes the gap.
Building any of these three plans by hand is optional. GP Journey's adaptive Study Planner generates the week-by-week schedule for you, alongside your SJT plan on the same timeline, and adjusts as your weak item types shift.
The Techniques That Actually Move Your Score
Volume alone plateaus quickly. These are the specific habits that keep scores climbing past that plateau, one per question type plus the timing discipline that ties them together.
Four habits worth building
- Read for the discriminator, not the vibe. On diagnostic items, two options will usually fit the general picture. One specific detail in the stem, a timeline, an age, a vital sign, separates them. Find that detail before you commit.
- Notice the word "next." On investigation items, several listed options would be reasonable at some point in the patient's workup. Only one is right as the immediate next step. An investigation that's appropriate later is still the wrong answer now.
- Do the safe thing first. Management items frequently hinge on sequencing: resuscitation before diagnosis, stabilisation before referral, senior escalation before definitive treatment. Recognising an unwell patient and getting help is a correct answer far more often than candidates expect.
- Keep the 90-second bail rule. Fifty questions in 60 minutes gives you about 72 seconds each. If a question isn't yielding within 90 seconds, pick your best option and move on. Two minutes spent rescuing one uncertain answer routinely costs two straightforward marks later in the paper.
What an Actual Practice Session Looks Like
"Do more questions" isn't specific enough to act on. Here's what one good rep actually looks like, step by step:
One practice rep, five steps
- Read the stem cold. No skimming ahead to the options. Form your own read of the case before anything else influences it.
- Identify the item type. Is this asking what's wrong, what to do next to find out, or what to do right now? Each demands different reasoning.
- Find the discriminator or the trap. The detail that separates two plausible options, on diagnostic and investigation items, or the correct sequencing, on management items.
- Answer within the pace, then submit. Aim for 72 seconds. Bail at 90 if it isn't yielding.
- Read every explanation, then log the gap. Including the options you didn't pick. One line in your error log if you got it wrong: the item type, what you picked, what was right, why.
A worked example of a management item: a patient presents with signs consistent with sepsis, a fast heart rate, low blood pressure, and a fever with a likely infection source. The tempting-but-wrong option is often waiting for blood culture results before starting antibiotics, since that feels thorough and evidence-led. The correct sequencing is the opposite: give fluids and antibiotics immediately, and send cultures alongside that treatment rather than before it. Delaying treatment to confirm a diagnosis is exactly the sequencing trap these items are built to catch.
Answer for safety and correct sequencing, not for what feels most thorough or clinically interesting. The College's stated purpose for this test is clinical safety, and safe sequencing is what safety looks like in a single best answer question. Commit to the most likely diagnosis given all the information, not the most dangerous one you can imagine, and take escalation options seriously rather than assuming a more hands-on answer is always the stronger one.
Mistakes That Quietly Cost Marks
None of these are dramatic. They're small, easy-to-miss habits that add up over 50 questions.
What to avoid
- ×Studying at membership or GP level. Covered above, but it's the single most common and most costly gap in self-directed CPST prep.
- ×Ignoring one item type because it feels less interesting. A candidate who is strong on diagnosis but weak on management sequencing still loses the same marks as one who is weak on diagnosis.
- ×Chasing a hard question past 90 seconds. The pace is unforgiving. Time spent rescuing one answer is time taken from questions you'd otherwise get right.
- ×Treating a reasonable investigation as correct. Reasonable at some point in the workup isn't the same as correct as the immediate next step, and the CPST scores the second, not the first.
- ×Never practising the full 50-question, 60-minute format before test day. Untimed practice teaches you to reason well. It doesn't teach you to reason well at 72 seconds a question. GP Journey's Mock Exam mode replicates the real format exactly, so you build that pace before test day instead of discovering it live.
How GP Journey Helps You Prepare
Every technique above depends on having enough well-explained questions to practise with, a way to see which item type is actually costing you marks, and enough coverage to trust that breadth, not just depth in a few areas. That's the specific gap GP Journey closes.
The bank runs to 1,500+ CPST questions, each a genuine single best answer item with a full expert explanation for every option, not just the correct one, sorted by diagnostic, investigation and management type so you can see exactly which one needs the most work.
Personalised analytics track your performance by item type automatically, so instead of guessing where to focus, you can see it directly and put your remaining study time there. The adaptive study planner then builds your schedule around two things at once: your weak item types, and how many hours you actually have available each week, synced on one timeline with your SJT and interview preparation. It's HSE TSS eligible, so cost isn't a barrier for most candidates either.
You know the standard. Now build the reps.
Start with real ICGP-style single best answer questions, full expert explanations, and a study planner that adapts to your weak item types and your actual hours.
GP Journey · CPST Practice
Frequently asked questions
There isn't a fixed percentage. The ICGP sets the pass mark using the Ebel method, a criterion-referenced approach where a panel judges how a borderline-competent candidate should perform on that specific paper. A harder paper produces a lower pass mark and an easier paper a higher one, which is why chasing a specific percentage is pointless. Reliable coverage of intern-level presentations is what clears the bar, not a target number.
No. The CPST is a separate pass or fail hurdle with no compensation mechanism: applicants who don't reach the required standard are not shortlisted for the Scenario-Based Competency Assessment, whatever their SJT score, and the whole application ends there rather than being carried forward on a strong ranking elsewhere. Clear the pass mark first; the 10% ranking weight only applies once you have.
No, and studying at that level is a common, costly mistake. The ICGP sets the CPST at the standard of a current intern, not a GP, registrar, or MRCGP/MICGP membership level. You need breadth across common presentations a recently qualified doctor meets, particularly recognising an acutely unwell patient and knowing when to escalate, not depth in any specialty or primary care management.
50 single best answer questions in 60 minutes, roughly 72 seconds per question. Each question gives five options and you select the one most appropriate response. It's sat immediately after the SJT in the same sitting.
For the 2027 intake, the SJT and CPST are sat across Wednesday 4 and Thursday 5 November 2026, per the ICGP's own recruitment timeline, taken consecutively in one sitting. Dates may be subject to change, so confirm on icgp.ie closer to test day.
Start with the SJT, since it carries 40% of your ranking against the CPST's 10% and takes longer to build. But don't neglect the CPST while doing that: it's a pass or fail hurdle with no compensation, so it needs real structured time even though the ranking weight is small. Most candidates run both in parallel, with SJT getting the larger early share.
Studying at the wrong standard. Candidates reach for MRCGP or MICGP membership material, assuming a harder resource can only help. It doesn't: that material sits at community-practice depth years past what an intern-level paper asks, and every hour spent on it is an hour not spent drilling single best answer questions at the standard actually being tested.
Aim a little beyond a bare pass, but don't over-invest. Once you clear the pass mark, your actual score still feeds the 10% ranking weight, so there's a modest, genuine reason to push past the minimum. There isn't a reason to treat it like the SJT, where the marginal hour is usually worth more, since the CPST's return per hour above the pass mark is smaller by design.
Before Test Day: A Quick Checklist
Ten questions worth asking yourself
- Have I completed an initial diagnostic by question type?
- Do I know whether diagnostic, investigation or management items are costing me the most marks?
- Am I studying at intern level, not GP or membership level?
- Have I practised the real single best answer format under timed conditions?
- Do I read every explanation, including on questions I got right?
- Do I know the 72-second pace and the 90-second bail rule?
- Have I kept an error log sorted by item type, not just topic?
- Can I explain why the "next" trap catches out investigation items?
- Have I completed at least one full 50-question, 60-minute timed set?
- Is my final stretch focused on review rather than new material?
Yes to most of these means your preparation is already structured around what the CPST actually rewards.