assay-development

Biotin vs Direct Coating: Key to Peptide ELISA Success

Biotin-streptavidin immobilization outperforms direct coating in peptide ELISA assays by providing better control over orientation and stability. This method boosts sensitivity, reduces background noise, and minimizes lot-to-lot variation, making it ideal for clinical applications detecting low analyte levels. Direct coating offers simplicity and low cost for initial development but suffers from inconsistent epitope presentation and potential denaturation.