Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

New study aims to replace costly vitamin d blood tests with a simple questionnaire

NCT ID NCT02822651

Knowledge-focused Sponsor: Hospices Civils de Lyon Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

2,592 people

The number who actually took part.

Started

Sep 2016

Finished

Nov 2017

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: \- Men and women aged 18 to 70 years old Exclusion Criteria: * Participation in a study related to vitamin D * Taking at least 80 000 IU vitamin D in the last 3 months as a single dose * Pregnancy or breast-feeding * Renal failure : severe renal impairment, dialysis, having kidney transplant * Known hepatic impairment * Gastrointestinal disorders: Celiac disease, Crohn's disease, ulcerative colitis, bariatric surgery, gastrointestinal surgery with stoma * Known primary hypo/hyperparathyroidism * Bone cancer/metastases current or in the last 2 years * Treatment with antiepileptics * Long-term treatment with glucocorticoids (\> 3 months) * Treatment with antiretroviral * Legal incapacity or limited legal capacity * Non-recipient of French Social Security

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Vitamin D status are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Vitamin D status

Contacts and locations

Locations

  • Hospices Civils de Lyon - Pôle IMER

    Lyon, 69424, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.