Vitamin D status is universally assessed by measuring circulating total 25-hydroxyvitamin D
[25 (OH) D] 3, the sum of 25 (OH) D3 and 25 (OH) D2. However, despite the widespread …

Abstract Background: Measuring serum 25 (OH) D concentration is common in clinical
practice despite the questionable reliability of assays. Aims: The aim of the present study …

In recent years it has been shown that vitamin D deficiency is associated with an increased
incidence as well as the progression of a broad range of diseases including osteoporosis …

Vitamin D is a fat-soluble vitamin that is synthesized in the skin with exposure to sunlight or
is ingested from dietary supplements or food. There has been a dramatic increase in …

The growing interest in vitamin D has stimulated intensive research activities aiming to
address unresolved analytical, clinical and physiological aspects of vitamin D [1–4]. This …

The precursor of the active form of vitamin D, 25-hydroxyvitamin D (25 (OH) D), is
recognized as the optimal indicator of vitamin D status. Vitamin D3 undergoes conversion …

Despite the improvement in the analytical imprecision between methods and laboratories
over the last years, the reported prevalence of vitamin D deficiency in a given population still …

Abstract BACKGROUND 24, 25-Dihydroxyvitamin D [24, 25 (OH) 2D] in serum may be both
a nuisance and nutritionally valuable. METHODS We investigated the impact of 24, 25 (OH) …

(DBP). Why should this interest the readers of JBMR? Clinicians and even laypeople are
very familiar with the use of serum 25OHD concentrations as the most reliable marker of the …

There is widespread concern about the high prevalence of vitamin D deficiency amid
evidence to support that such a state may increase the risk of a wide range of adverse health …