Endocrine Abstracts

Total vitamin D levels are decreased in obese patients probably due to an increased volume of distribution mechanism. Recently introduced direct assays allow the measurement of free-vitaminD3 levels (fvitD3). Few data are available regarding fvitD3 levels in obese people and the effect of bariatric surgery upon its circulating concentration. We aimed to evaluate fvitD3 in a cohort of obese patients before and after bariatric surgery treatment and its relationship to phosphocal...