Electrochemical detection of human ferritin based on gold nanorod reporter probe and cotton thread immunoassay device

An electrochemical immunoassay strategy was developed using a natural cotton thread immunoassay device combined with gold nanorod reporter probe. Quantitative detection can be realized by anodic stripping voltammetry (ASV) testing of the dissolved gold ions (III) after oxidative treatment to release the pre-immobilized complex of the purple band test zone by the HBr-Br2 solution.