相关实验视频
Updated: May 5, 2026

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Assessment of Kidney Function in Mouse Models of Glomerular Disease
Published on: June 30, 2018
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在瑞典外部质量评估计划中,尿蛋白在实验室间的实验室间变化 2005-2023 瑞典外部质量评估计划 2005-2023
Morgan Lundgren1, Peter Ridefelt1, Carolina Kristoffersson2
1Department of Medical Sciences, Clinical Chemistry, Uppsala University, Sjukhusvägen 7, 753 09 Uppsala, Sweden.
Clinical biochemistry
|September 19, 2024
概括
评估尿蛋白 (U-ALB) 方法揭示了显著的制造商差异,影响了精确的蛋白尿症诊断. 标准化方法和参考材料对于可靠的病评估至关重要.
科学领域:
- 临床化学 临床化学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 诊断检测试验 诊断检测试验
背景情况:
- 增加的白蛋白尿是死亡风险升高的关键指标.
- 目前对白蛋白尿的诊断值包括尿中的白蛋白 (U-ALB) >20 mg/L或白蛋白与肌素的比率 (U-ACR) >3 g/mol.
- 在U-ALB测量方法之间有限的标准化使准确的诊断变得复杂.
研究的目的:
- 评估U-ALB测量方法的性能和可变性.
- 为了比较U-ALB的中央实验室 (CLAB) 和临床检测 (POCT) 方法.
- 评估方法与共识值的一致性,并确定制造商特定的偏差.
主要方法:
- 来自Equalis的低U-ALB水平 (2005-2023) 外部质量评估数据的分析.
- 根据制造商和测试方法对数据进行分类 (CLAB与POCT).
- 将制造商的中间值与共识值进行比较,并对制造商的CV%进行评估.
主要成果:
- 中央实验室 (CLAB) 方法通常与共识值更好地一致,CV%低于POCT方法,特别是大约20 mg/L U-ALB.
- 特定的CLAB方法 (罗氏,阿博特,西门子) 显示出相对于共识的不同程度的偏差.
- POCT方法 (HemoCue,西门子,阿博特) 也显示出与共识值的差异.
- 来自所有制造商的U-Creatinine方法与共识值 (1-4%的平均差异) 有很好的一致性.
结论:
- 虽然大多数U-ALB方法符合NKDEP偏差 (<13%) 和不精确性 (<30%) 的建议,但制造商之间的差异已经扩大,特别是在2023年.
- 这些方法特定的变化需要在专尿和ACR的临床指南中考虑.
- 建议采用标准化尿液参考材料,以提高诊断准确度.
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