对于常规凝血试验的共识不稳定方程
Rubén Gómez Rioja1, Andrea Caballero Garralda2, Immaculada Comas Reixach2
1Hematology Department, La Paz-Cantoblanco-Carlos III Hospital, Madrid, Spain.
Clinical chemistry and laboratory medicine
|March 29, 2025
概括
血样本的稳定性对于凝血测试,如前列血时间 (PT) 和激活的部分血栓形成时间 (aPTT) 是至关重要的. 新的共识不稳定方程揭示了降解率,有助于准确的临床实验室测试.
科学领域:
- 临床化学 临床化学
- 血液学 血液学 血液学
- 实验室医学 实验室医学
背景情况:
- 血样本的稳定性对于前激素时间 (PT) 和激活的部分血栓形成时间 (aPTT) 对于准确的凝血测试至关重要.
- 临床和实验室标准研究所 (CLSI) 最近的更新延长了aPTT的可接受时间框架,需要更新稳定性数据.
- 现有的指导方针依赖于具有不同最大允许误差 (MPE) 标准的研究,强调需要采用统一方法.
研究的目的:
- 通过分析跨越30年的43项研究的原始数据,开发PT和aPTT的共识不稳定方程.
- 为了描述样品降解,独立于特定的实验参数.
- 为评估凝血试验稳定性和量化系统性错误提供一个强大的模型.
主要方法:
- 一项全面的文献综述确定了43项研究,这些研究包含PT,aPTT和关键血凝因子的实验稳定性数据.
- 分析了包括百分比偏差 (PD%),时间和样本处理变量在内的原始数据.
- 通过原始回归模型来推导全球不稳定性方程,并确定影响因素.
主要成果:
- 冷PT和aPTT样本表现出相似的稳定性,平均每月延长0.8%.
- 在非冷样本中,管道处理对稳定性产生了显著影响,比储存温度更重要.
- 共识方程表明PT的线性日均恶化为2.9%,aPTT的对数分解,预测分别在6小时和24小时延长6.1%和10%.
结论:
- 获得的共识不稳定性方程为评估凝血试验稳定性提供了一种可靠的方法.
- 这些方程与专家建议一致,并增强对样本降解的理解.
- 这些模型有助于更好地量化凝血测试中的系统错误.
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