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固相免疫层析定性法和化学发光定量法检测心肌肌钙蛋白I比较 被引量:4

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摘要 目的观察固相免疫层析快速定性检测方法在心肌肌钙蛋白I(cTnI)不同浓度范围内与定量方法结果比较的符合率,评价cTnI定性方法的应用价值。方法用美国普林斯顿医学生物技术(PBM)公司固相免疫层析快速测试板定性检测399份患者血浆样本cTnI浓度,同时与Beckman Coulter免疫化学发光定量法的结果进行比较。以cTnI〉0.04 ng/L为阳性诊断切点,将样本按cTnI浓度由低至高分为6组,第1组为cTnI定量阴性组,其他5组均为定量阳性组。结果第1组阴性符合率及第2~6组阳性符合率分别为98.0%、3.4%、17.3%、46.2%、94.4%和100.0%。定量法阴性组有3份样本定性法阳性,分别是黄疸、乳糜和高类风湿因子(RF)水平样本。结论 cTnI定性法检测特异性高,但应注意干扰因素影响;由于定性法敏感性低,阴性时仍应进行定量检测。
出处 《临床检验杂志》 CAS CSCD 北大核心 2013年第8期571-572,共2页 Chinese Journal of Clinical Laboratory Science
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