Human Carboxypeptidase A4 (CPA4) ELISA Kit

Carboxypeptidase A4 (CPA4) is a zinc-dependent metallocarboxypeptidase studied in oncology and reproductive biology, where altered expression has been linked to prostate cancer aggressiveness, breast tumor progression, and placental tissue remodeling. The enzyme cleaves C-terminal residues from peptide substrates, a function that researchers have connected to processing of bioactive peptides and to tumor microenvironment remodeling. This quantitative immunoassay from Assay Genie is built for research laboratories measuring native CPA4 protein in human-derived samples and supports investigations into peptide hormone processing pathways and extracellular protease activity. The kit contains the components required to run a standard enzyme-linked immunosorbent workflow, including pre-coated plate wells, reference standards, detection reagents, wash buffer, and chromogenic substrate solution, formatted for use with conventional microplate readers. Researchers typically load diluted specimens alongside a calibration curve, develop with the included substrate, and record absorbance to interpolate CPA4 concentration against the standard line. Each kit is intended for in vitro research use only; reagents should be stored refrigerated until first use and protected from light to preserve antibody binding activity and enzyme conjugate stability.