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.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hospices Civils de Lyon - Pôle IMER
Lyon, 69424, France
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