Intra-assay: 4.2%;
Inter-assay: 5.7%
GM-CSF is a hematopoietic growth factor secreted by macrophages, T cells, mast cells, natural killer cells, endothelial cells and fibroblasts that functions as a cytokine. GM-CSF stimulates the development of neutrophils and macrophages, and promotes the proliferation and development of early erythroid megakaryocytic and eosinophilic progenitor cells. GM-CSF binds to receptor heterodimers consisting of a GM-CSF-specific alpha chain and the common beta chain that is shared by the high-affinity receptors for IL-3 and GM-CSF.
Standard curve
Example of human GM-CSF standard curve in Assay Diluent #1.
Linearity
The concentrations of GM-CSF were measured and interpolated from the target standard curves and corrected for sample dilution.
#1 sample is undiluted samples are as follows: human PBMC cells stimulated with 10ug/ml PHA for 5days (100%). The interpolated dilution factor corrected values are plotted. The mean target concentration was determined to be 95 pg/mL in stimulated human PBMC supernatant.
Leading Competitor comparison
Protocol Diagram