LC–MS/MS based 25(OH)D status in a large Southern European outpatient cohort: gender- and age-specific differences

Abstract

Average serum 25(OH)D in South Tyrol is higher than in other parts of Europe. 25(OH)D and PTH show a continuous inverse relationship. Seasonal variation of serum 25(OH)D is an important aspect in young and middle-aged adults, but becomes less relevant in elderly subjects. 25(OH)D₂ is of minor practical importance in South Tyrol.