Blockers

Blocking is a necessary step in immunoassays to prevent unwanted binding and resultant false results and high background signals. Our blocking reagents from CANDOR Bioscience saturate free binding sites on plastic or other protein-binding surfaces by covering the surface with a dense layer of molecules without gaps in the layer, effectively avoiding non-specific binding. Multiple blockers are offered:

• The Blocking Solution – a premium, casein-based blocker for highly effective surface blocking and challenging assays requiring high reproducibility and low coefficients of variation.
• SmartBlock™ - efficient, BSA-free peptide-based blocker suitable for a wide range of immunoassays.
• BSA-Block – well-established BSA-based blocker. 
• PlateBlock™ - animal-free and protein-free blocker specifically developed for serological ELISA and antigen-down assays on plastic surfaces. PlateBlock™ is included in the COVID-19 ELISA Sampler Package for antibody test development.

These reagents greatly improve the sensitivity and specificity of the assay.

CANDOR blocking reagents can be used in ELISA, Western blotting, protein arrays, Immuno-PCR, and other immunoassay workflows.

Not sure which blocker is right for your assay? CANDOR Blocking Reagent Sampler Packages allow multiple formulations to be evaluated side-by-side during assay development.

To determine which blocker is appropriate for your application, try the Blocking Reagent Sampler Package or ELISA Blocking Reagent Sampler Package.