Anti-interferon lambda 1 antibodies are used for the immunodetection of the protein encoded by the IFNL1 gene. In humans, the canonical protein has a reported length of 200 amino acid residues and a mass of 21.9 kDa. It is known to be a secreted protein. A member of the Lambda interferon protein family, it is known to be involved with innate immune responses. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include cytokine Zcyto21, interleukin 29 (interferon, lambda 1), interleukin-29, and IFN-lambda-1. Gene orthologs have been identified in the mouse species. A number of interferon lambda 1 antibodies have been mentioned in research publications and have associated citations. ELISA is a widely used application for these antibodies. In addition, Western Blot is also a common application.