酶联免疫吸附法检测梅毒抗体试验灰区结果分析

Syphilis antibody enzyme-linked immunosorbent method grey area test results analysis

目的分析梅毒酶联免疫吸附法(TP-ELISA)在更换为两步法后的灰区结果。探讨适宜的梅毒检测操作规程以减少误诊。方法随机选取50 288例血清标本进行TP-ELISA法筛查;对处于灰区的样本,再进行快速血浆反应素试验(RPR)和梅毒螺旋体明胶凝集试验(TPPA)进行验证。按疾病及年龄段分组,统计各组抗梅毒抗体灰区率。结果 50 288例血清样本,经过TP-ELISA法初筛灰区结果为61例。不同年龄段造成的灰区率61岁以上年龄段最高。结论 TP-ELISA检测仍存在一定的假阳性,设定合理的灰区范围,对灰区内的样本进行确认试验具有重要的临床意义。

Objective ELISA syphilis enzyme analysis（TP-ELISA） results for the gray zone two step after the replacement .To explore the suitability of syphilis detection procedures ,reduce misdiagnosis .Methods Randomly choose 50 288 cases of serum screening for syphilis enzyme linked immunosorbent assay ;in grey area of the sample ,then rapid plasma reagin test （RPR） and Treponema pallidum particle agglutination test（TPPA） for validation .According to disease and age groups ,statistics of anti TP an-tibody gray area ratio .Results 50 288 serum samples ,after TP-ELISA method to screen grey area in the early results of 61 cases . The highest age of grey area rate in different ages was more than 61 years old .Conclusion TP-ELISA detection still exist certain false positive ,set reasonable grey area ,the gray zone within the sample confirmation test has important clinical significance .