Invitrogen™ BlockAid™ Blocking Solution by Thermo Fisher Scientific

Manufacturer Thermo Fisher Scientific  |   Model: B10710
High performance blocking reagent helps minimize background in cell and tissue immunofluorescence applications

Invitrogen™ BlockAid™ Blocking Solution by Thermo Fisher Scientific product image
Invitrogen™ BlockAid™ Blocking Solution

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BlockAid Blocking Solution is an optimized mix of protein-blocking components, which is superior to commonly used blocking reagents such as bovine serum albumin, normal serum, or casein for use with cells or tissue sections. The ready-to-use solution requires no dilution and can be used before the addition of primary antibody or as a diluent for both the primary and secondary antibody. BlockAid Blocking Solution has also been validated for use with streptavidin conjugates and microsphere-protein conjugates.


  • Excellent background reduction—superior to conventional blocking solutions
  • Ready to use—no dilution or stock preparation required
  • Versatile—use with any primary or secondary antibody, streptavidin conjugate, microsphere protein conjugates, or Qdot conjugates