Do MDCAT questions actually repeat from past papers?
The short answer
Some do, but far fewer than the phrase "most repeated MCQs" implies. What repeats reliably in MDCAT is not the question, it is the concept the question tests: the same chapters, and often the same handful of ideas within them, are examined year after year while the wording and the numbers change. TestUstad counts the actual repeats in the papers it holds and publishes the figure at most repeated MDCAT MCQs rather than asserting one.
Where does the "80% repeated" claim come from?
It comes from nowhere checkable, which is the point worth noticing. Search for repeated MDCAT MCQs and you will find a percentage attached to almost every result, usually a round one, usually with no statement of how many papers were compared, which papers they were, or what counted as a repeat.
Those three details are the entire claim. Without them a percentage is a slogan. A file titled "500 most repeated MDCAT MCQs" is, in most cases, 500 MCQs on common chapters, which is a different and much weaker statement than 500 questions that have actually appeared more than once.
The question to ask any repeated-MCQ resource
Which papers did you compare, and how many were there? A resource that can answer that is doing analysis. One that cannot is selling a filename.
What is the difference between a repeated question and a repeated concept?
This distinction is the whole guide, and getting it wrong is what makes students study repeated-MCQ files instead of the syllabus.
| A repeated question | A repeated concept | |
|---|---|---|
| What it means | The same stem and options appear in two different exam years | The same idea is examined again with different wording or numbers |
| How common | Uncommon, and countable | Very common, and the basis of the paper |
| What it is worth to you | A mark, if that exact question returns | Every mark that idea is ever worth |
| How to study it | Recognition. Fragile, and useless if the paper changes | Understanding. Transfers to any version of the question |
A student who memorises 500 exact questions has 500 facts. A student who understands the twenty ideas those questions keep testing can answer any of the 500 and the ones nobody has seen yet. The second student scores higher in every year the paper is not an exact rerun, which is every year.
How does TestUstad count repeats?
By comparing the solved past papers it actually holds, question by question, and treating a repeat as the same question appearing in two or more different exam years. Everything downstream of that is arithmetic on a corpus you can open and check.
The corpus, the number of papers, the number of questions in them and the number of genuine repeats are all stated on the MDCAT paper analysis page, along with the subjects the evidence does not reach. That last part matters more than it sounds: the honest version of this analysis has to say where it runs out, and most published versions do not.
The number is smaller than the marketing, deliberately
Our repeat count is lower than the figures circulating elsewhere. The difference is not that we found less; it is that a repeat here has to be a question that genuinely appeared twice in papers we hold, rather than a question that resembles one.
So how should you actually use repetition?
As a ranking of what to study, not as a list of what to memorise. Repetition tells you where the examiner's attention has consistently been, and that is genuinely useful information about how to spend a limited number of study hours.
Start from chapter weight, not from a question list
The most important MDCAT topics pages rank chapters by their measured share of real papers. That ranking is a revision order, and it is more reliable than any individual question because it is built from thousands of them.
Read the repeated questions for the pattern, not the answer
When you look at most repeated MDCAT MCQs, the useful observation is not that this question came twice. It is what the examiner keeps choosing to test inside that chapter, which is usually narrower than the chapter itself.
Then practise the whole chapter anyway
Because the paper will restate the idea rather than reprint the question. Practice the full chapter bank under the subject, then come back to the repeats as a check.
Never let a repeat list replace the syllabus
The chapters that repeat least still appear on the paper. A student who studies only high-yield material is choosing to concede those marks, which is a reasonable trade only when time has genuinely run out.