Transdermal sampling of vitamin D
3 and 25-hydroxyvitamin D
3.
Bioanalysis 2018;
11:61-72. [PMID:
30475076 DOI:
10.4155/bio-2018-0138]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM
Transdermal analysis is proposed for vitamin D3 and its hydroxylated metabolite to overcome problems associated with blood analysis.
METHODS
Vitamin D3 was extracted directly from skin with solid patches and liquid phases. Deuterium-labeled vitamin D3 was added to the extraction solutions to compensate for variability and accurately determine the rate of transdermal transfer. Of the different extraction solvents tested, 50:50 octanol:isopropanol showed the best results, with an accuracy of 115% and reproducibility better than 30%.
CONCLUSION
The research shows that transdermal route can be used for analysis of vitamin D3 in porcine skin. When microneedles are used, accurate measurements were obtained in 1 h. With intact skin, the highest accuracy was obtained when extraction was done for 2 h.
Collapse