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Tags：#Antibody Detection Kit #Matrix effect #Sample processing #Experimental validation #Reagent suitability
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肖
肖芳静4047
2026-07-21
这更像试剂盒适用基质不足叠加基质效应。EDTA血浆可能通过螯合、影响抗原表位或标记体系导致信号异常；细胞上清因蛋白种类和缓冲盐不同，常出现背景升高。先确认说明书是否明确覆盖血浆、上清。若没覆盖，需要自做验证：同一样本基质互换加标回收、稀释线性、平行检测，并用基质匹配标准曲线。
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PCRPro1763
23 days ago
排查顺序建议从样本处理开始：同一批血清分装后分别处理成血浆和上清，控制冻融次数；比较稀释液、封闭剂、洗涤液是否适配；加入阳性对照和阴性对照看是否仅基质问题。若结果仍偏差大，就不宜硬用。只选一种基质时，优先选厂家有明确验证和稳定批间数据的基质，而不是最方便获得的基质。
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