Research
Micronutrients & recovery
Serum 25-hydroxyvitamin D [25(OH)D] is the best indicator of vitamin D nutritional status, reflecting contributions from diet and dermal production, and should be standardized using programs like VDSP.
To check your Vitamin D status, ask for a serum 25-hydroxyvitamin D [25(OH)D] test. This is the gold standard. Ensure your lab participates in standardization programs like VDSP for accurate results.
StrongSupportsVERY_HIGH confidence
There is a general consensus, also adopted by the ECTS, that the serum/plasma 25(OH)D concentration is the best indicator of vitamin D nutritional status, as it reflects the contributions from diet and dermal production in response to ultraviolet B (UVB) sunlight exposure.
Why this rating
Based on consensus of analytical experts and adoption by major health authorities.
Source
Current vitamin D status in European and Middle East countries and strategies to prevent vitamin D deficiency: a position statement of the European Calcified Tissue Society
Paul Lips et al. · European Journal of Endocrinology · 2019
clinical_guidelineCited 668×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →