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- W4289525518 abstract "We report a new sensitive label-free electrochemical immunosensor to detect Vitamin D3 (25-OHD3) in untreated serum samples. To this aim, a graphite screen printed electrode (SPE) was modified using cysteamine (CYM) functionalized core-shell magnetic nanoparticles (Au@MNPs) then, the 25-OHD3 antibody (AbD) was immobilized via glutaraldehyde crosslinking. The several steps involved in the immunosensor development and 25-OHD3 analysis were monitored by using differential pulse voltammetry (DPV). The developed immunosensor showed a LOD of 2.4 ng mL-1 and a linear range between 7.4 and 70 ng mL-1. The effectiveness of the immunosensor in human serum analysis was assessed by comparing the results obtained with the chemiluminescence-immunoassay (CLIA) reference method. The high sensitivity and excellent agreement with the reference method suggest its potential use as a POCT to monitor hypovitaminosis 25-OHD levels." @default.
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- W4289525518 date "2023-01-01" @default.
- W4289525518 modified "2023-10-14" @default.
- W4289525518 title "ASu@MNPs-based electrochemical immunosensor for vitamin D3 serum samples analysis" @default.
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- W4289525518 doi "https://doi.org/10.1016/j.talanta.2022.123755" @default.
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