Pierce™ Avidin is used in biotin-based detection methods, including Western blotting or ELISA detection with appropriate enzyme substrates. It is a purified protein from egg whites and it is stable over wide range of pH and temperature.

• Native avidin - glycoprotein from chicken egg whites, 67 kDa, pI = 10
• Glycosylation and isoelectric point renders avidin more soluble than streptavidin
• Significantly less expensive than recombinant streptavidin
• Avidin is usually preferred over streptavidin for avidin-biotin complex (ABC) staining methods in immunohistochemistry (IHC)