用硫脲在金电极表面自组装单分子层,然后通过戊二醛耦联乙型肝炎表面抗体(抗-HBs),得到电位型的乙型肝炎抗体膜免疫电极,用于检测乙型肝炎表面抗原(HBsAg).叙述了该免疫电圾的制备方法、性能特点和临床应用.对HBsAg检测的线性范围是6～320μg/L,线性相关系数为0.998,检出下限4μg/L.对40例临床血清检测结果,与现行的酶联免疫吸附分析法(ELISA)的结果比较,符合率87.5%.
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