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在多个化学测试中出现异常IgA偏蛋白干扰的情况:如何处理它
1Drs. Tribedi Roy Diagnostic Laboratory, Kolkata, India.
Journal of medical biochemistry
|August 14, 2024
概括
单克隆IgA副蛋白可以干扰临床化学测试,影响胆红素,酸盐和铁的测量. 脱蛋白化或用正常血清稀释可以减轻这些干扰.
科学领域:
- 临床化学 临床化学
- 免疫学 免疫学 免疫学
- 实验室医学 实验室医学
背景情况:
- 副蛋白质,由血细胞产生的异常蛋白质,可以干扰各种实验室检测.
- 已知单克隆免疫球蛋白A (IgA) 副蛋白在临床化学中会引起分析干扰.
- 了解和减轻这些干扰对于准确的患者诊断和监测至关重要.
研究的目的:
- 为了研究单克隆IgA偏蛋白对多种临床化学分析物的干扰.
- 评估各种方法来克服自动分析仪上的类蛋白干扰.
- 为了比较湿和干化学平台在副蛋白的存在下的性能.
主要方法:
- 在AU5800,Cobas Pure和Alinityci (湿化学) 和Vitros 350/ECiQ (干化学) 平台上测试了两个单克隆IgA偏蛋白的血清样本.
- 对包括白素,无机酸盐和铁在内的分析物质进行了干扰评估.
- 克服干扰的方法包括用正常盐水稀释,用聚乙烯糖醇去蛋白化以及用正常血清稀释.
主要成果:
- 在湿化学平台上观察到对比利鲁宾,无机酸盐和铁的干扰.
- 这些受影响的分析物的重复运行是不可重现的.
- 用正常盐水稀释是无效的;去蛋白化和用正常血清稀释产生了理想的结果.
结论:
- 在湿化学系统中,IgA副蛋白显著干扰胆红素,无机酸盐和铁的准确测量.
- 使用聚乙烯糖醇或与正常血清稀释的脱蛋白化是减轻IgA类类蛋白干扰的有效策略.
- 这些发现强调了在实验室诊断中考虑对蛋白干扰的重要性,并实施适当的缓解技术.
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