
[摘要] 目的 探讨化学发光微粒法(CMIA)在梅毒特异性抗体低值结果中的临床应用。方法 选取该院2013年12月—2014年6月该院和门诊病人常规免疫检测标本5673例,使用化学发光微粒法(CMIA)对5673人份标本进行初筛,阳性标本进一步使用梅毒螺旋体明胶凝集试验(TPPA)和甲苯胺红不加热血清凝集实验(TRUST)进行了对比检测。结果 使用CMIA法检测5673份标本中,阳性标本为347例,占总标本数6.11%。其中S/CO值大于10的标本为204例、S/CO值5~10的标本81例、S/CO值1~5的标本62例。在347例CMIA法阳性标本中,TPPA检测为阳性的305例(87.8%)TRUST检测为阳性的130例(37.5%)。2种方法比较差异有统计学意义(P<0.005)。 结论 CMIA在梅毒特异性抗体的检测中,灵敏度较好,适合大批量筛查。对于S/CO值<5的标本,应结合TPPA和TRUST进行复检,有条件的实验室可使用免疫印迹法进行确证。
[关键词] 化学发光微粒法;梅毒特异性抗体;低值结果
[中图分类号] R446.6 [文献标识码] A [文章编号] 1674-0742(2015)02(c)-0181-02
[Abstract] Objective To investigate the chemical luminescence particle method (CMIA) in the clinical application of syphilis specific antibody results in low value. Methods Using chemiluminescence microparticle (CMIA) on for 5673 specimens were screened, positive samples were further use of Treponema pallidum gelatin agglutination test (TPPA) and toluidine red unheated serum agglutination test (TRUST) were measured. Results Using CMIA method to detect 5673 samples, there were 347 cases, accounted for the total number of samples of 6.11%. The S/CO value is greater than 10 specimens for 204 cases, a S/CO value of 5 ~ 10 specimens from 81 patients, S/CO value of 1 ~ 5 of the specimens of 62 cases. In 347 cases of CMIA positive specimens, 305 cases positive detection for TPPA (87.8%) TRUST for the detection of 130 positive cases (37.5%). Comparison of 2 methods had significant difference(P < 0.005). Conclusion Syphilis specific antibody detection in CMIA, the sensitivity is better, suitable for mass screening. For values of S/CO less than 5 specimens should be combined with the TPPA and TRUST re examination, laboratory conditions can use Western blot confirmation.
[Key words] Chemiluminescence method of microparticle; Syphilis specific antibody;Low results
梅毒是由梅毒苍白螺旋体引起的一种性传播疾病,可引起神经、心血管等多系统损害,严重影响人群的身体健康。此外,梅毒亦可通过胎盘传给胎儿,导致自发性流产、死产或先天梅毒等。90年代末以来,全国梅毒报告病例数明显增加,呈快速流行的趋势,已成为我国重要的公共卫生问题。
为了控制梅毒的院内感染,卫生部已规定凡是手术、输血及各种创伤性检查的患者,均需进行梅毒特异性抗体的血清学检测。自2011年以来,该院检验科开始使用化学发光微粒子法(CMIA)进行梅毒特异性抗体筛查。CMIA具有特异性好、敏感度高、可定量、全自动操作、重复性好等优点。但在长期的工作中,也发现CMIA法在检测中尤其是低值标本中具有一定的假阳性,因此,为了更好的指导临床的诊断和治疗,避免误诊。……