Influenza Hemagglutinin (HA) Peptide is a synthetic peptide with an amino acid sequence of N-Tyr-Pro-Tyr-Asp-Val-Pro-Asp-Tyr-Ala-C. It is extensively used to isolate, purify, detect, and track the protein of interest in cell biology and biochemistry. It is used for competing out the anti-HA antibody binding to HA-tagged fusion proteins in immunoassays. It may also be used to to elute HA-tagged fusion proteins from an affinity column of Monoclonal Anti-HA agarose.