Clinical trials: 25-Hydroxyvitamin D Concentration
25-hydroxyvitamin D Serum Concentrations
Trial of Vitamin D Fortified Milk
Prevalence of VDD is high worldwide, even in sunbathed equatorial regions where it had not been suspected before. The most cost-effective method for reducing population-wide VDD is through fortification of commonly consumed…
- Trial name
- NCT01909622
- Testing
- Vitamin D, No vitamin D
- Where
- 2 sites in Colombia
- Volunteers
- 80 people
- Sponsor
- University of Michigan
Serum 25-hydroxyvitamin D Concentrations (25OHD)
Dietary Requirement for Vitamin D in Adolescents Aged 14-18 Years
It is known that low vitamin D status is a very common problem in the UK. It is also known that a lack of vitamin D availability has potentially serious health implications, especially with respect to bone and muscle function.
- Trial name
- NCT02150122
- Testing
- Vitamin D3
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- University of Surrey
Vitamin D Deficiency, Musculoskeletal Diseases
Vitamin D in School Children
The primary purpose of this study it to investigate total circulating 25-hydroxyvitamin D (25(OH)D) in school children (aged 4-11years) in Northern Ireland; thereby establishing the prevalence of vitamin D status (deficiency…
- Conditions
- Vitamin D Deficiency, Musculoskeletal Diseases, Cognitive Delay, Mild
- Trial name
- DVinCHI (NCT05018988)
- Testing
- Oral vitamin D spray
- Where
- United Kingdom
- Volunteers
- 118 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Infant, Premature, Diseases
Calcium (ca),Phosphorus( P) and 25-hydroxyvitamin D(25OHD)] in Infants Born ≤ 32 PMA Gestational Weeks (GA)
It has not yet been established the optimal dose of vit. D for preterm infants in Poland. It is not known what dose of vit. D will provide the correct concentration of vit.
- Trial name
- Ca-P (NCT03691896)
- Testing
- Cholecalciferol 400, Cholecalciferol 800, Cholecalciferol 1200
- Where
- Poland
- Volunteers
- 200 people
- Sponsor
- Centre of Postgraduate Medical Education