< 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
No significant interference observed with available related molecules.
The QuantiGlo Human IL-8 Chemiluminescent Immunoassay is a 5 hour solid phase ELISA designed to measure human IL-8 levels in cell culture supernates, serum, and plasma. It contains the 72 amino acid variant of human IL-8 derived from E. coli as well as antibodies raised against this recombinant factor. This immunoassay has been shown to accurately quantitate recombinant human IL-8. Results obtained using natural human IL-8 showed linear curves that were parallel to the standard curves obtained using the QuantiGlo kit standards. These results indicate that this kit can be used to determine relative mass values for natural human IL-8.
Intra-Assay Precision (Precision within an assay) Four samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Four samples of known concentration were tested in separate assays to assess inter-assay precision.
The recovery of IL-8 spiked to three different levels throughout the range of the assay in various matrices was evaluated.
Average % Recovery
Cell Culture Media (n=4)
Citrate Plasma (n=4)
EDTA Plasma (n=4)
Heparin Plasma (n=4)
To assess the linearity of the assay, samples spiked with high concentrations of IL-8 in various matrices were diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Preparation and Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
CXCL8/Interleukin-8 is a chemokine that is upregulated at sites of inflammation where it promotes neutrophil infiltration and activation. CXCL8 can form homodimers and heterodimers with CXCL4/PF4. Its bioactivity is regulated by proteolytic truncations, citrullination, and the decoy receptor DARC. CXCL8 signals through CXCR1/IL-8 RA, which is also used by CXCL6, and through CXCR2/IL-8 RB, which is used by multiple CXC chemokines. CXCL8 also binds to Serpin A1/alpha-1 Antitrypsin which prevents CXCL8 interaction with CXCR1.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.