The Quantikine HS Human IL-1 beta Immunoassay is a 4 hour solid phase ELISA designed to measure human IL-1 beta levels in serum, plasma, and saliva. It contains E. coli-expressed recombinant human IL-1 beta and antibodies raised against the recombinant factor and has been shown to accurately quantitate recombinant human IL-1 beta. Results obtained using natural IL-1 beta showed linear curves that were parallel to the standard curves obtained using the Quantikine HS kit standards. These results indicate that the Quantikine HS Immunoassay kit can be used to determine relative mass values for natural human IL-1 beta. Reports indicate that ELISA kits calibrated using mature IL-1 beta as a standard will detect, but considerably underestimate, the unprocessed IL-1 beta precursor present in samples. In biological samples other than cell lysates, the precursor form of IL-1 beta is usually not the predominant form of IL-1 beta present and, additionally, is not biologically active. Therefore, results obtained using this kit should provide a useful measure of the levels of active IL-1 beta present in serum, plasma, and saliva.

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision

Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in twenty separate assays to assess inter-assay precision. Assays were performed by at least three technicians using two lots of components

The recovery of human IL-1 beta spiked to levels throughout the range of the assay in various matrices was evaluated.

To assess the linearity of the assay, samples containing and/or spiked with high concentrations of human IL-1 beta were serially diluted with calibrator diluent to produce samples with values within the dynamic range of the assay.