Can the labeling reaction tolerate the presence of BSA or gelatin?
FAQ from Biotium
Labeling IgG free of BSA or gelatin stabilizer gives the best results. However, IgG containing BSA or gelatin can be labeled with good results using a larger sized kit and our modified Mix-n-Stain protocol. See the Mix-n-Stain Kit Selection Guide below to select the appropriate kit size and protocol.