Human Glycoprotein 39, Cartilage (GP39) ELISA Kit

This Assay Genie immunoassay supports quantitative measurement of human Glycoprotein 39, also known in the literature as YKL-40 or chitinase 3-like 1 (CHI3L1), a secreted glycoprotein linked to cartilage turnover, extracellular matrix remodeling, and chronic inflammation. Designed for plasma-based specimen input, the kit ships in a 96 assays format with pre-coated microplate wells, biotinylated detection antibody, streptavidin-HRP conjugate, lyophilized reference standard, wash buffer, and substrate sufficient for a complete analytical run. Researchers studying osteoarthritis biomarker profiles, rheumatoid arthritis disease activity, hepatic fibrosis staging, or tumor microenvironment biology frequently treat YKL-40 as a candidate indicator, and the plate layout supports standard-curve plus unknown determinations in parallel. Reconstitution of the calibrator is performed at the start of the assay, and all kit components are equilibrated to room temperature before initiating the protocol. The format is well matched to clinical research laboratories, biomarker validation studies, and translational projects that require reproducible quantification of GP39 across human patient cohorts.