Rat Catestatin PharmaGenie ELISA Kit (SBRS0121)

Catestatin is a 21-amino-acid bioactive peptide generated by proteolytic cleavage of chromogranin A, the pro-hormone that is co-stored with catecholamines in chromaffin cell secretory granules. This Assay Genie competitive ELISA kit is formatted for 96 assays and is calibrated to quantify endogenous rat catestatin across cell culture supernatant, plasma, and serum samples using a colorimetric readout. It is intended for in vitro research use only, supporting studies of cardiovascular physiology, sympathoadrenal activity, hypertension models, and metabolic regulation where CST serves as a surrogate marker of chromaffin granule exocytosis. The kit ships with a pre-coated microplate and the reagents needed to run a standard curve alongside unknowns in parallel, so circulating catestatin levels can be tracked in rat specimens. Repeated freeze-thaw cycles of standards and sample aliquots are best avoided to preserve peptide integrity across assay runs.