肌钙蛋白复合物
检出限
校准曲线
循环伏安法
辣根过氧化物酶
电化学
电极
材料科学
分析化学(期刊)
色谱法
化学
肌钙蛋白I
生物化学
医学
物理化学
精神科
心肌梗塞
酶
作者
Eithne Dempsey,Dhanraj Rathod
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2018-03-01
卷期号:18 (5): 1828-1834
被引量:35
标识
DOI:10.1109/jsen.2018.2789436
摘要
Here we report an electrochemical ELISA approach for cardiac Troponin T (cTnT) determination based on a lateral flow membrane with underlying screen printed electrodes (<;100 Ω /cm 2 ). The thick film transducer was modified with the anti-cardiac Troponin T antibody via physisorption and the electrochemical performance of the immunosensor was evaluated using cyclic voltammetry. The capture antibody coated immunoelectrode employed for electrochemical determination of Troponin T antigen used a sandwich assay format with horseradish peroxidase conjugated signaling antibodies held in the track of a lateral flow sensor strip. A simple two step procedure realized signal acquisition within <;20 min (total assay time). The lateral flow electrochemical immunosensor response resulted in a calibration curve with linear response (0-700 ng/ml cTnT) with limit of detection of 0.15 ng/ml.
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