Lateral Flow Assay for NGAL Detection Using CysteamineModified Gold Nanoparticles
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Abstract
Neutrophil gelatinase-associated lipocalin (NGAL) is a promising biomarker of chronic kidney disease (CKD). A rapid and cost-effective method is required for CKD detection. This study aimed to develop and evaluate the performance characteristics of an antibody (Ab) and a method for NGAL detection in clinical samples and assess its potential as a point-ofcare test. The developed assay was highly specific for NGAL and showed no cross-reactivity with other endogenous substances. The developed lateral flow immunoassay based on cysteamine-modified gold nanoparticles exhibited a sensitivity of 12.5 ng/mL. The results showed that the dual monoclonal Ab-based sandwich is ideal for screening patients with CKD and has the potential to provide rapid and cost-effective detection of NGAL as a point-of-care testing system.
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