检验医学 ›› 2015, Vol. 30 ›› Issue (3): 250-253.DOI: 10.3969/j.issn.1673-8640.2015.03.012

• 技术研究与评价·论著 • 上一篇    下一篇

乳胶颗粒凝集法检测梅毒特异性抗体的性能评估

胡亮1, 陈艺1, 陈长强1, 瞿晨芸1, 顾志冬2, 樊绮诗1   

  1. 1.上海交通大学医学院附属瑞金医院北院检验科,上海 201801
    2.上海交通大学医学院附属瑞金医院检验科,上海 200025
  • 收稿日期:2014-06-18 出版日期:2015-03-30 发布日期:2015-04-16
  • 作者简介:null

    作者简介:胡 亮,男,1987年生,学士,技师,主要从事临床免疫学检验工作。

  • 基金资助:
    上海市科学技术委员会科研计划项目(14411964500);上海申康医院发展中心资助项目(SHDC12010215)

Evaluation on the performance of a latex agglutination assay for treponemal specific antibody

HU Liang1, CHEN Yi1, CHEN Changqiang1, QU Chenyun1, GU Zhidong2, FAN Qishi1   

  1. 1. Department of Clinical Laboratory, Ruijin Hospital (North), Shanghai Jiaotong University School of Medicine, Shanghai 201801, China
    2. Department of Clinical Laboratory, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China;
  • Received:2014-06-18 Online:2015-03-30 Published:2015-04-16

摘要: 目的

对乳胶颗粒凝集法梅毒螺旋体特异性抗体检测试剂(Mediace TPLA)进行性能评估。

方法

参考美国临床实验室标准化协会(CLSI)EP系列文件,评估Mediace TPLA的分析性能。用Mediace TPLA检测111例梅毒确诊患者和78例排除梅毒感染者的血清,并与化学发光微粒子免疫分析法(CMIA)进行比较。

结果

Mediace TPLA检测结果在8.0、28.6及166.0 T.U.这3个水平的总变异系数(CV)分别为8.77%、3.94%和6.57%;检测线性范围为0~250 T.U.;总回收率为95.31%;一定程度的溶血(血红蛋白<4.8 g/L)、脂血(甘油三酯<8 mmol/L)、黄疸(胆红素<20 μmol/L)及类风湿因子(<450 IU/mL)对检测结果无明显影响;排除梅毒感染的30例抗核抗体(ANA)阳性患者、10例肝炎患者及10例妊娠期妇女血清检测结果为阴性。以CMIA结果为相对标准,Mediace TPLA Cut-off值取10 T.U.时,其检测灵敏度为99%、特异性为100%。

结论

Mediace TPLA具有抗干扰能力强、重复性好、准确性好、线性范围宽及特异度高等特点,可在全自动生化分析仪中使用。

关键词: 梅毒, 乳胶颗粒凝集法, 血清学检测

Abstract: Objective

To evaluate the analytic performance of a latex agglutination assay for treponemal specific antibody (Mediace TPLA).

Methods

The EP documents established by Clinical and Laboratory Standards Institute (CLSI) were referred to evaluate the analytic performance. A total of 110 syphilitic positive and 78 syphilitic negative sera were detected by Mediace TPLA,and the results were compared with those of chemiluminescence microparticle immunoassay (CMIA).

Results

The total coefficients of variation (CV) were 8.77%, 3.94% and 6.57% respectively at the concentration levels of 8.0, 28.6 and 166.0T.U.. The linear range was from 0 to 250 T.U., and the total recovery rate was 95.31%. The results were not significantly affected by hemolysis (hemoglobin<4.8 g/L), lipidemia (triglyceride<8 mmol/L), jaundice (bilirubin <20 μmol/L) and rheumatoid factor (<450 IU/mL). The results of 30 antinuclear antibody (ANA) positive patients, 10 hepatitis patients and 10 pregnant women were all negative. When the results of CMIA were defined as the reference standard,the sensitivity of Mediace TPLA was 99%, the specificity was 100%, and the cut-off value was 10 T.U..

Conclusions

Mediace TPLA has excellent anti-interference ability, repeatability, high accuracy, wide linear range and specificity. It can also be used in automated biochemical analyzers.

Key words: Syphilis, Latex agglutinaion assay, Serological detection

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