How to pass the OPRA exam
There's no shortcut, but there is a method. Here's how successful candidates prepare for the OPRA exam (formerly KAPS) — and the mistakes that cost people a re-sit.
The five things that matter most
- Know the format — 120 questions, blueprint-weighted across five domains
- Study by yield — Therapeutics is the biggest slice, so start there
- Drill calculations from week one — they're the most common failure point
- Sit full timed mocks — pacing and stamina are skills you have to practise
- Review every wrong answer's reasoning, not just the correct key
Common mistakes
Leaving calculations until the end. Doing endless untimed questions but never a full timed mock. Memorising answers instead of the underlying method. Studying every domain equally instead of weighting effort toward the largest ones.
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Start freeFrequently asked questions
How hard is the OPRA exam?
It's a demanding, scenario-based knowledge exam — but very passable with structured preparation across the five domains and consistent calculation practice.
How long should I prepare?
Most candidates study over roughly 8–12 weeks, depending on background and available time.