New study aims to replace costly vitamin d blood tests with a simple questionnaire
NCT ID NCT02822651
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is developing a clinical score to predict vitamin D deficiency without a blood test. Over 2,500 adults will fill out a questionnaire about sun exposure and diet, then have their vitamin D levels measured. The goal is to create a tool that helps doctors decide who truly needs a blood test, reducing unnecessary healthcare costs.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this could lead to a simple questionnaire that helps doctors identify who really needs a vitamin D blood test, saving time and money.
What could go wrong
This is an observational study, not a treatment trial. The score may not be accurate enough to replace blood tests in all cases.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Hospices Civils de Lyon - Pôle IMER
Lyon, 69424, France