Ready-to-use ELISA kits are available for the detection of Interferon, alpha 4, an alias of the protein, interferon alpha 4. The official gene symbol is IFNA4. The protein, with a mass of 21.8 kDa and length of 189 residues, is reported to be secreted. It is a member of the Alpha/beta interferon family and may be known by other names, including: INFA4, interferon alpha-M1, interferon alpha-76, interferon alpha-4B, and IFN-alpha-4.