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智能手机支持的尿白蛋白与肌素比率测试的诊断准确性
Danielle Jeddah1, Nicholas B Bevins2, Matan Ronen1
1Department of Clinical Development, Healthy.io, Boston, MA, United States.
The journal of applied laboratory medicine
|July 11, 2025
概括
微分检测 (MKT) 可以准确检测白蛋白尿,这是慢性病 (CKD) 的关键指标. 这种家庭使用的测试显示了高灵敏度和早期发现风险人群中CKD的潜力.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 临床诊断 临床诊断 临床诊断
- 生物标记分析 生物标记分析
背景情况:
- 白蛋白尿是检测慢性病 (CKD) 的关键生物标志物,特别是在高危人群中.
- 家庭使用的诊断测试,如FDA批准的微小脏测试 (MKT),正在出现用于半定量蛋白尿评估.
- 对新的诊断工具与既有实验室方法进行评估对于临床采用至关重要.
研究的目的:
- 将MKT的诊断准确性与标准实验室定量方法 (贝克曼考尔特AU 480分析仪) 的诊断准确性进行比较.
- 评估MKT在患有CKD或患有CKD风险的个体中检测白蛋白尿的能力.
- 根据KDIGO白尿症分类类别来评估MKT的性能.
主要方法:
- 来自患有脏损伤风险因素的个体的尿液样本使用MKT和标准实验室方法分析了尿中的白蛋白与肌素比率 (uACR).
- 使用KDIGO指南 (A1,A2,A3) 分类白症.
- 诊断准确度指标,包括灵敏度,特异性,正预测值 (PPV) 和负预测值 (NPV),为MKT计算.
主要成果:
- 在MKT中,MKT表现为高灵敏度 (96.4%) 和负预测值 (98.6%),用于检测白蛋白尿症 (uACR>30 mg/g).
- 该测试实现了84.2%的特异性和66.8%的积极预测值.
- MKT准确地将85.6%的样本分类为KDIGO白病的阶段,并正确识别了所有严重增加的白病 (A3) 样本.
结论:
- 微分检测 (MKT) 显示出高灵敏度,超过指导值,在高风险人群中检测白蛋白尿的可接受特异性.
- MKT有可能提高CKD的检测和管理,特别是在初级保健和社区环境中.
- 该测试的准确排除能力对于脏疾病管理中的早期干预策略有价值.
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