Human Insulin Like Growth Factor Binding Protein 4 (IGFBP4) ELISA Kit

Quantify human IGFBP4 with this in vitro immunoassay kit from Assay Genie, intended for research use only. Insulin-like Growth Factor Binding Protein 4 is a 237-residue secreted glycoprotein that modulates the bioavailability of IGF-1 and IGF-2, with documented roles in bone remodeling, fetal growth regulation, and altered expression profiles reported in several malignancies. The kit supports studies in endocrinology, oncology, and developmental biology where circulating IGFBP4 levels serve as a biomarker of IGF-axis activity. Samples are processed on a microplate format and the assay is calibrated against recombinant human IGFBP4 standards. Each kit provides reagents sufficient for 96 determinations and includes a detailed protocol with recommended dilution series for various sample matrices. Reagent components are stored at 4°C until first use, and the assay has been characterized for use with cell culture supernatants, expanding its utility to conditioned media studies and tissue explant experiments.