25-HVD2 (25-Hydroxy Vitamin D2) ELISA Kit
25-HVD2 (25-Hydroxy Vitamin D2) ELISA Kit
This 25-Hydroxy Vitamin D2 ELISA kit is based on Competitive ELISA detection method and takes approximately 2 hours. The microplate provided in this kit has been precoated with 25-HVD2. 25-HVD2 in the sample or standard competes with a fixed amount of biotin-labeled 25-HVD2 for sites on a pre-coated antibody specific to 25-HVD2. Free components are washed off. After adding HRP-Streptavidin Conjugate (SABC), biotin specifically binds with streptavidin to form immune complexes. Wash off unbound conjugate. Add TMB substrate solution. Then, TMB was catalyzed by HRP to produce a blue color product that turned yellow after adding a stop solution. Read the O.D. absorbance at 450nm in a microplate reader. Compare OD450 value of sample with the standard curve through curve fitting software to determine the concentration of 25-HVD2 in the sample. The concentration of the target substance is inversely proportional to the OD450 value.
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