Human C4 (alpha chain) ELISA Kit (HUFI07987)

Complement component 4 (C4) is a central protein of the classical and lectin complement activation pathways, where proteolytic cleavage generates the alpha chain fragment that remains covalently attached to target surfaces during opsonization. Quantitative measurement of this alpha chain fragment supports research into immune complex disease, complement-mediated inflammation, autoimmune conditions such as systemic lupus erythematosus, and infectious disease pathogenesis. The Assay Genie Human C4 (alpha chain) ELISA Kit is configured as a 96 Assays kit intended for use with human serum or plasma-type specimens. Researchers studying lupus, rheumatoid arthritis, hereditary angioedema, or transplant rejection commonly investigate C4 status alongside downstream complement effectors such as C3 and the membrane attack complex. Reagents supplied in the kit are sufficient to perform 96 Assays, and components should be stored refrigerated between uses to preserve calibration curve performance across multiple runs.