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Avidin/Biotin Blocking Kit (SP-2001)

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Avidin/Biotin Blocking Kit blocks all endogenous biotin, biotin receptors, and avidin binding sites present in tissues.  This kit is designed for use with avidin detection systems such as the VECTASTAIN® ABC Kits if avidin or biotinylated reagents bind non-specifically to tissues or proteins.

This blocking kit consists of 18 ml of Avidin D and 18 ml of biotin in convenient dropper bottles.


Unit Size1 kit
ApplicationsImmunohistochemistry / Immunocytochemistry, Immunofluorescence, In situ hybridization, Blotting Applications, Elispot
Blocking ActionEndogenous Biotin or Avidin/Streptavidin Binding Proteins

Product FAQs

These kits were developed to prevent non-specific binding of avidin or streptavidin based detection reagents primarily to endogenous biotin in cell and tissue IHC and IF applications. It is generally recommended to match the blocking and detection reagent such as using an avidin/biotin blocking kit with an avidin based detection system. In most cases, however, these kits can be used interchangeably, except in circumstances where avidin or streptavidin may bind to inherent non-biotin associated structures (see: Alon, R., et al {1992}, Eur. J. Cell Biol. 58:271-279).

If the primary antibody is unconjugated, then the avidin/biotin blocking kit reagents can be applied at any time prior to the application of the biotinylated secondary antibody. If the primary antibody is biotinylated, then we would recommend applying the avidin/biotin blocking kit reagents before primary antibody incubation.


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