These FI ELISA kits are immunodetection tools for measuring the levels of FI in biological samples. FI is an alias of the human CFI gene, which encodes the protein, complement factor I. Notably, FI is known to play a role in innate immune responses and proteolysis, among other functions. The CFI protein is described to be 583 amino acid residues in length and 65.8 kilodaltons in mass. It is known to be a secreted protein. In terms of tissue specificity, it is reported to be expressed in the liver by hepatocytes. This protein is known to be glycosylated. Other names for this target antigen include AHUS3, ARMD13, and C3BINA. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.