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不同孵育条件对HBsAg定性分析的影响 被引量:2

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摘要 目的探讨酶联免疫吸附试验(ELISA)中不同孵育条件对乙肝表面抗原(HBsAg)检测结果的影响。方法采用 ELISA 方法分析孵育温度(25℃、37℃)、时间(30、60、90、120 min)、方式(25℃振荡和静止)对检测不同浓度 HBsAg(0、0.2~0.5 ng/mL、1.0 ng/mL)标本吸光度/临界值(S/CO)的变化。结果在同一温度下,标本从0.2~1.0 ng/mL 的 S/CO 随孵育时间延长而增加。对于0.2 ng/mL 标本孵育30 min、60 min 按照判断标准结果呈阴性,而孵育90、120 min 结果转为阳性。孵育时间不同对阴性标本 S/CO 基本无影响。在同一时间、同一浓度下,25℃孵育振荡方式 S/CO 值较静止方式明显增加。结论不同孵育条件对 ELISA 定性测定 HBsAg 结果有影响,尤其对弱阳性标本。
出处 《国际检验医学杂志》 CAS 2008年第10期933-933,935,共2页 International Journal of Laboratory Medicine
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