Human CXCL9/MIG (C-X-C motif chemokine 9) Pre-Coated ELISA Kit

This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti- Human CXCL9 antibody was pre-coated into 96-well plates. Biotin conjugated anti-human CXCL9 detection antibody was used. Standards, test samples and biotin conjugated detection antibody were added to the wells subsequently. Wash buffer was used to wash any non-specific binding. HRP conjugated Streptavidin was used as secondary antibody. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the Human CXCL9 amount of samples captured in the plate. Optical Density (O.D) can be read at absorbance 450 nm in a microplate reader. Concentration of Human CXCL9 can be calculated using the standard curve.