Abstract
The prevalence of vitamin D deficiency in the general population has become a major public health problem. Vitamin D deficiency might have significant consequences not only to bone health but possibly to autoimmune-, infectious and cardiovascular disease. This has resulted in increased clinical testing for 25-hydroxyvitamin D (25(OH)D) in serum, as circulating 25(OH)D is regarded as the best indicator of adequate exposure to sunlight and dietary intake of vitamin D. There are reportedly over 50 vitamin D metabolites of which 25(OH)D and 1,25(OH)2D are well known to provide clinical information. More recently, there is increasing interest in measuring the C3-epimer of 25(OH)D, which has shown to contribute significantly to the 25(OH)D concentration, particularly in infant populations, and in 24,25(OH)2D, a major catabolite of 25(OH)D metabolism. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is an analytical tool that allows the specific determination of all relevant vitamin D metabolites, with the potential of performing multiple analyte analysis in a single experimental setting, creating a vitamin D profile. This article reviews recent advances in the quantification of vitamin D metabolites using LC-MS/MS.
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Abbreviations
- 1,25(OH)2D:
-
1,25-dihydroxyvitamin D
- 24R,25(OH)2D3 :
-
24R,25-dihydroxyvitamin D3
- 25(OH)D:
-
25-hydroxyvitamin D
- 3-epi-25(OH)D:
-
3-epi-25-hydroxyvitamin D
- APCI:
-
Atmospheric pressure chemical ionisation
- APPI:
-
Atmospheric pressure photo ionisation
- CV:
-
Coefficient of variation
- DBS:
-
Dried blood spots
- DEQAS:
-
Vitamin D external quality assessment scheme
- ESI:
-
Electrospray ionisation
- GC-MS:
-
Gas chromatography mass spectrometry
- ID:
-
Isotope dilution
- LC-MS/MS:
-
Liquid chromatography tandem mass spectrometry
- LLE:
-
Liquid liquid extraction
- LLOQ:
-
Lower limit of quantification
- MRM:
-
Multi reaction monitoring
- NIST:
-
National Institute of Standards and Technology
- PFP:
-
Pentafluorophenyl
- PTH:
-
Parathyroid hormone
- PTAD:
-
4-phenly-1,2,4-triazoline-3,5-dione
- RIA:
-
Radio immunoassay
- RRA:
-
Radio receptor assay
- SPE:
-
Solid phase extraction
- SRM:
-
Standard reference material
- VDBP:
-
Vitamin D binding protein
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van den Ouweland, J.M.W., Vogeser, M. & Bächer, S. Vitamin D and metabolites measurement by tandem mass spectrometry. Rev Endocr Metab Disord 14, 159–184 (2013). https://doi.org/10.1007/s11154-013-9241-0
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DOI: https://doi.org/10.1007/s11154-013-9241-0