In November 2024, 42% of candidates failed the GPhC Common Registration Assessment. In June 2025, 23% failed. Part 1 calculations alone eliminates roughly 1 in 6 candidates every sitting — and their Part 2 performance becomes irrelevant. With a maximum of 3 lifetime attempts, every sitting matters.
The revision resource landscape for the CRA is remarkably thin. Most platforms offer static question banks — fixed sets of questions served in rotation regardless of what you personally get wrong. None of them know which therapeutic areas you are weakest in, which calculation types cost you the most time, or which law topics you consistently misapply. They give you questions. They do not give you a strategy.
iatroX is different. 1,000+ questions meticulously mapped to the CRA blueprint, in the exact format of the exam — Part 1 numerical free-entry calculations and Part 2 SBAs and EMQs. With a true adaptive engine, BNF/NICE-integrated explanations, and a performance dashboard that tells you exactly where your exam risk lies.
What the CRA Actually Tests
Part 1 — Calculations (40 questions, 120 minutes). Numerical free-entry — you type the number, not select from options. Dose calculations, unit conversions, IV infusion rates, displacement values, concentration expressions, creatinine clearance, paediatric weight-based dosing, quantities to supply, and dilutions. You must pass Part 1 AND Part 2 in the same sitting — no compensation. In June 2025, the Part 1 pass mark was 24/40 and 84% passed. That means 16% failed Part 1 alone.
Part 2 — Clinical Practice (120 questions, 150 minutes). 90 SBAs and 15 EMQ sets. Three content areas: clinical therapeutics (highest volume — cardiovascular, nervous system, endocrine, infection are high-weighted), law governance and regulation (the consistent underperformance area per Board of Assessors feedback), and pharmacy calculations embedded in clinical scenarios. Around 20% of questions involve paediatric patients.
Why Existing Resources Are Not Enough
Most GPhC Q-banks share the same limitation: they are static. You work through questions in a fixed order or random rotation. If you get 8 out of 10 cardiovascular questions right but 3 out of 10 endocrine questions right, the platform serves you the same mix tomorrow. Your weak areas do not get more attention. Your strong areas do not get less. Every candidate sees the same questions regardless of their individual knowledge profile.
This is like revising a textbook by reading every chapter equally — including the chapters you already know — while the chapters you do not know get the same 10 minutes as everything else. It is inefficient, and for an exam with a 42% failure rate and 3 lifetime attempts, inefficiency is a risk you cannot afford.
How the iatroX GPhC Q-Bank Works
iatroX uses a true adaptive engine. After every question, the system updates your proficiency profile across all CRA content areas — every therapeutic domain, every calculation type, every law topic — and selects the next question to target your weakest area specifically.
If your endocrine dosing is weak: More endocrine questions, increasing in difficulty as your accuracy improves.
If your displacement value calculations are slow: More displacement questions, tracked for both accuracy and speed — because Part 1 is a time-pressure exam where method without pace fails.
If your CD prescription validity knowledge has gaps: More law scenarios testing exactly the regulatory provisions you confuse.
The engine does not know what the average candidate needs. It knows what you need. And it concentrates your limited revision time there.
BNF and NICE integration. Every Part 2 explanation references the relevant BNF section or NICE guideline — cited, with context. When the BNF updates a first-line recommendation or NICE revises a treatment pathway, the explanation reflects the current guidance. You are revising from the same sources the exam tests against.
Performance dashboard. Topic-level proficiency across all CRA content areas. You can see at a glance whether your risk is in cardiovascular therapeutics, pharmacy law, paediatric dosing, or concentration calculations. This is the metacognitive awareness that learning science says predicts exam success — knowing what you do not know before exam day, not after.
Mobile app. iOS and Android — the only GPhC Q-bank with a native mobile app. Your commute, your lunch break, your quiet moments in the dispensary — all become targeted revision time. 15 questions in 10 minutes, adaptive, on your phone.
In the exact exam format. Part 1 numerical free-entry calculations. Part 2 SBAs with 5 options. EMQ sets with 8-10 option lists and 2-4 clinical scenarios per set. The format you practise on is the format you sit on.
What Is in the Q-Bank
Part 1 coverage: All 9 CRA calculation types — dose and dose regimen, unit conversions, IV infusion rates, displacement values, concentration expressions, creatinine clearance, paediatric weight-based dosing, quantities to supply, and dilutions. Adaptive difficulty scaling within each type.
Part 2 coverage: High-weighted therapeutic areas (cardiovascular, nervous system, endocrine, infectious disease), medium-weighted areas (GI, respiratory, genito-urinary, immune system, blood and nutrition), law governance and regulation (Medicines Act, Misuse of Drugs Regulations, Human Medicines Regulations, RP Regulations, GPhC Standards, emergency supply), and clinical scenarios involving comorbidities, drug interactions, age-related adjustments, and paediatric patients.
Every high-risk medicine on the CRA framework list: anticoagulants (warfarin and DOACs), insulin types, methotrexate (weekly dosing safety), lithium, aminoglycosides, opioids, and DMARDs.
Pricing and Access
£29/month or £99/year. Available at iatrox.com/quiz-landing?exam=uk-gphc. Online and via the iatroX mobile app (iOS and Android).
MHRA-registered platform. The only adaptive GPhC Q-bank with BNF/NICE integration and a native mobile app.
The CRA is passable with the right approach. The candidates who fail are not the ones who cannot do the work — they are the ones whose revision tools cannot tell them where the work needs to be done. iatroX can.