Non-Specific Binding from Elevated Incubation Temperature (Immunohistochemistry (High Background))

Question

Accepted Answer

Increased background staining when primary antibody incubation is performed at room temperature, as higher temperatures promote non-specific antibody-tissue interactions. Common causes: 1) Room temperature incubation increases non-specific antibody binding 2) Higher kinetic energy at elevated temperatures promotes unwanted interactions 3) Insufficient optimization of incubation temperature for specific antibody 4) Antibody binding kinetics favor non-specific interactions at warmer temperatures Solutions: 1) Incubate primary antibody overnight at +4°C instead of room temperature 2) Reduce incubation temperature to minimize non-specific binding kinetics 3) Optimize incubation time when switching from room temperature to +4°C 4) Maintain consistent cold temperature throughout primary antibody incubation