Mycolic acid antigen containing liposomes, and an electrode immobilised antigens of tuberculous mycobacterial origin are produced. A diagnostic sample from a human suspected of having tuberculosis is diluted and divided into first and second samples. A control sample comprising the first sample and a redox probe is exposed to the liposomes. A test sample comprising the second sample and a redox probe is exposed to liposomes not containing mycolic acid antigens. The control sample is contacted with the immobilised antigens to allow antibodies therein to bind to the antigens. The test sample is contacted with the immobilised antigens to allow any antibodies therein to bind to the antigens. The degree of binding in the samples is compared by electrochemical impedance spectroscopy. Any observed lesser binding by the control sample is an indicator of antibodies to the antigens in the diagnostic sample, indicating tuberculosis in the human.
生产出含有霉菌酸抗原的脂质体和固定结核分枝杆菌抗原的电极。将疑似结核病患者的诊断样本稀释并分成第一和第二样本。由第一样本和
氧化还原探针组成的对照样本暴露于脂质体。由第二样本和
氧化还原探针组成的检测样本接触不含霉菌酸抗原的脂质体。对照样品与固定化抗原接触,使其中的
抗体与抗原结合。试验样品与固定化抗原接触,使其中的
抗体与抗原结合。通过电
化学阻抗光谱比较样品的结合程度。如果对照样本的结合程度较低,则表明诊断样本中存在抗原
抗体,表明人体存在结核病。