An enzyme immunoassay for determining epidemal growth factor (EGF) in human serum samples using an ultramicroanalytical system.

Journal of immunoassay & immunochemistry(2017)

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Abstract
Human epidermal growth factor is a small peptide consisting of 53 amino acid residues, which stimulates cell proliferation and is associated with several human carcinomas. A simple sandwich-type ultramicroELISA assay (UMELISA), based on the advantages of high affinity reaction between streptavidin and biotin has been developed for the measurement of EGF in human serum samples. Strips coated with a high affinity monoclonal antibody directed against EGF are used as solid phase, to ensure the specificity of the assay. The EGF assay was completed in 18 hours, with a measuring range of 39-2500 pg/mL. The intra- and inter-assay coefficients of variation were 4.4-7.3 % and 0-5.1 %, respectively, depending on the EGF concentrations evaluated. Percentage recovery ranged from 96-104 %. Regression analysis showed a good correlation with the commercially available Human EGF Immunoassay Quantikine(®) ELISA kit (n= 130, r=0.92, p<0.01). The analytical performance characteristics of our UMELISA EGF endorse its use for the quantification of EGF in human serum samples.
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Key words
CIMAVax-EGF®,Epidermic Growth Factor,SUMA Technology,ultramicroELISA
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