Relationship of total and calculated free 25-hydroxyvitamin D to biomarkers and metabolic indices in healthy children

Christine Simpson, Jane Zhang, Dirk Vanderschueren, Lei Fu, Teresita Pennestri, Roger Bouillon, David Cole & Thomas Carpenter
ABSTRACT Context: Vitamin D status is usually assessed by serum total 25-hydroxyvitamin D. Whether free 25-hydroxyvitamin D measures better correlate with various clinical outcomes is unclear. Objective: To identify correlations between total 25-hydroxyvitamin D (t25-OHD), calculated and direct measures of free 25-OHD, and to identify associations of these measures with other outcomes in children, across the 6 common GC haplotypes. Design: Healthy urban-dwelling children underwent measurement of relevant variables. Setting: Academic medical center Participants: Healthy,...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?