Inhibition of the streptavidin-biotin interaction by milk

W L Hoffman1, A A Jump

  • 1Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas 75235.

Analytical Biochemistry
|September 1, 1989
PubMed

Nonfat dried milk is routinely used as a blocking agent and diluent in immunoassays. However, the data presented in this paper demonstrate that milk contains an inhibitor of the biotin-streptavidin interaction. It is recommended that milk be dialyzed or used at lower concentrations when it is employed as a diluent of streptavidin.