Rapid Analysis of 25-Hydroxyvitamin D2and D3by Liquid Chromatography–Tandem Mass Spectrometry and Association of Vitamin D and Parathyroid Hormone Concentrations in Healthy Adults
- 1 July 2010
- journal article
- research article
- Published by Oxford University Press (OUP) in American Journal of Clinical Pathology
- Vol. 134 (1), 148-156
- https://doi.org/10.1309/ajcppia7dfbt4gks
Abstract
Measurement of 25-hydroxyvitamin D (25OH-vitD) is used to assess vitamin D status. We developed a high-sensitivity measurement method for 25OH-vitD and assessed the relationship between 25OH-vitD and parathyroid hormone (PTH) in healthy adults. Aliquots (100 μL) of serum were spiked with internal standard, proteins were precipitated, and samples were analyzed by liquid chromatography–tandem mass spectrometry using 2-dimensional chromatographic separation. Total imprecision was less than 10%, and the limit of quantitation was 1.0 ng/mL. We determined the distribution of concentrations of 25OH-vitD2 and 25OH-vitD3 in healthy adults using samples collected during winter and summer and evaluated the association between 25OH-vitD and PTH. The difference between median concentrations of 25OH-vitD in samples collected during winter and summer was 11 ng/mL (27 nmol/L). Statistically significant differences in concentrations of PTH were observed between groups of samples with 25OH-vitD less than 11 (27 nmol/L) and 11 to 15 ng/mL (27–37 nmol/L) and between groups with 25 to 30 (62–75 nmol/L) and more than 40 ng/mL (100 nmol/L). Among the advantages of this method are its high sensitivity and specificity.Keywords
This publication has 33 references indexed in Scilit:
- Blood biomarkers of osteoporosis in mild cognitive impairment and Alzheimer’s diseaseJournal of Neural Transmission, 2009
- Immunomodulatory effects of Vitamin D in multiple sclerosisBrain, 2009
- Crohn’s disease: The hot hypothesisMedical Hypotheses, 2009
- Cyclic Changes of Vitamin D and PTH are Primarily Regulated by Solar Radiation: 5-Year Analysis of a German (50° N) PopulationHormone and Metabolic Research, 2009
- Vitamin D for the prevention and treatment of pancreatic cancerWorld Journal of Gastroenterology, 2009
- Vitamin D and autoimmune rheumatic diseasesRheumatology, 2008
- Serum 25-Hydroxyvitamin D Levels and Risk of Multiple SclerosisJAMA, 2006
- Resurrection of vitamin D deficiency and ricketsJCI Insight, 2006
- Vitamin D: Its role in cancer prevention and treatmentProgress in Biophysics and Molecular Biology, 2006
- Vitamin D and prevention of colorectal cancerThe Journal of Steroid Biochemistry and Molecular Biology, 2005