Normalized vitamin D metabolite concentrations are better correlated to pharmacological effects than measured concentrations.

ABSTRACT:

Background

Vitamin D deficiency has been associated with a multitude of diseases, ranging from fractures to cancer. Nearly 99% of vitamin D metabolites are bound to proteins, altering the relationship between concentration and activity.

Methods & results

Normalized concentrations were calculated and validated using published data regarding the correlation of 25-hydroxyvitamin D with bone mineral density. In addition, healthy and kidney disease subjects were recruited for preliminary investigations. Use of the normalizing equations resulted in statistically significant improvements in the relationship between vitamin D metabolites and several markers of health status.

Conclusion

Normalized concentrations are similar to clinically reported values and are easier to inter

SUBMITTER: Mason D 

PROVIDER: S-EPMC5137860 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature