Predictive Questionnaire for Vitamin D Insufficiency in Healthy Adults
Predictive Questionnaire for Vitamin D Insufficiency in Healthy Adults
The purpose of this clinical study is to evaluate the metrological properties of a
 questionnaire that aims to identify the vitamin D status in reference to a vitamin D blood
 dosage.
Each subject will perform only one visit (visit V1). The study duration per subject will last
 about 2 hours. During this visit V1, the subjects will perform a medical exam in order to
 check their eligibility (general statement and check of inclusion / non-inclusion criteria).
 The eligible subjects will fill up a study questionnaire and will perform a blood sampling
 for a dosage of serum vitamin D.
Inclusion Criteria:

 -  Male and female volunteers

 -  Subject able to communicate with the investigator and the study team, able to read and
 write and follow all study instructions.

 -  Written informed consent provided and signed prior screening, after receiving and
 understanding the subject information.

 -  Registered with the French Social Security, in agreement with the French law on
 biomedical experimentation.

 Exclusion Criteria:

 -  Subject with diagnosed osteoporosis, osteopenia or osteomalacia.

 -  Subject with known disease that contributes in osteoporosis: Rheumatoid arthritis,
 Malabsorption syndrome, Inflammatory bowel disease, Hyperthyroidism,
 Hyperparathyroidism.

 -  Subject with known hepatic impairment.

 -  Subject with known liver impairment or with a history of renal transplantation.

 -  Subject with history of cancer.

 -  Subject with history of bariatric surgery.

 -  Subject taking or having taken osteoporosis inducing treatment, or treatment with an
 effect on calcium and phosphorus metabolism during the 3 months prior the visit:
 Corticosteroids, Enzyme inducing anticonvulsants, Heparin.

 -  Subject requiring vitamin D supplementation for a diagnosed pathology.

 -  Pregnant or breastfeeding Female.

 -  Subject with history of alcohol or drug abuse.

 -  Participation to any other clinical trial simultaneously and/or not having ended the
 exclusion period of another clinical trial.

 -  Subject of legal age unable of giving consent.

 -  Subject deprived of liberty by judicial or administrative decision.

 -  Subject of legal age under legal protection.

 -  Subject having received over 4500 Euros for clinical trial participation within the
 prior year including the indemnity for the present study.