Human CD19 (Cluster of Differentiation 19) ELISA Kit (HUFI04699)

The CD19 antigen is a transmembrane glycoprotein expressed throughout B-cell development, from the pro-B stage through mature B lymphocytes, making it a widely cited surface marker in immunology research and in clinical studies of B-cell malignancies and immune reconstitution. This quantitative immunoassay from Assay Genie is configured as a complete kit in a 96 Assays format, providing the microplate, capture antibody, detection reagent, standards, and buffer concentrates required to measure circulating CD19 levels in human specimens by ELISA.

Intended for research use only, the workflow uses pre-coated wells and a conjugated detection antibody: specimens and prepared standards are incubated in the wells, the detection antibody is applied, and a substrate step produces a measurable absorbance signal on a conventional microplate reader. Unopened kit components should be kept refrigerated and shielded from light until first use, and reconstituted reagents should be aliquoted and stored according to the supplied protocol to preserve activity across multiple freeze-thaw cycles.