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本文对ELISA测定血清TB—Ag进行了初步探讨,其方法的线性范围为0.625～5μg/mL;阴性和阳性标本的重复率分别为100％和95％;特异性为96％;敏感性:在结核抗体(TB—Ab)阴性的病人中,进展期菌阳肺结核、菌阴肺结核及肺外结核的TB—Ag阳性率分别为50％、71.8％和60％。
In this paper, the serum level of TB-Ag in ELISA was preliminarily investigated. The linear range was 0.625 ~ 5μg / mL. The repeatabilities of negative and positive samples were 100% and 95% respectively. The specificity was 96%. Sensitivity: The TB-Ag positive rates of TB-Ag, TB-Ag and TB were 50%, 71.8% and 60% respectively in TB-Ab-negative patients.