Human Complement Component 1, Q Subcomponent A (C1qA) ELISA Kit

The A-chain polypeptide of C1q (C1qA) forms the recognition subunit that initiates the classical complement cascade, and this colorimetric immunoassay from Assay Genie delivers quantitative measurement of human C1qA protein in research samples. C1q bridges innate and adaptive immunity by opsonizing antibody-antigen complexes and activating downstream complement components, so quantifying C1qA supports studies in autoimmune disease, immune-complex deposition, lupus nephritis, and primary complement deficiencies.

This 96-assay kit is configured for a standard microplate workflow and is intended for research use only, suitable for immunology, rheumatology, transplant research, and clinical biomarker investigations. The assay is validated for human sample matrices including serum specimens and plasma-derived material, and ships with all reagents required to run the protocol. Each plate delivers a single-use strip layout that accommodates both small pilot studies and larger cohort experiments.