血清胎盘生长因子:分析前的稳定性,血液衍生物的比较以及生物素和血液溶解的干扰
Mette Tiedemann Skipper1, Tina Parkner2, Henriette Ladegård Skov3
1Department of Clinical Biochemistry, Aarhus University Hospital, Palle Juul-Jensen Boulevard, 99 Aarhus, Denmark.
Clinica chimica acta; international journal of clinical chemistry
|November 24, 2025
概括
胎盘生长因子 (PlGF) 在各种预分析条件下稳定,包括延迟处理和暴露于生物素或血液溶解. 这证实了plgf作为一个可靠的生物标志物,用于预测早产子前.
科学领域:
- 临床化学 临床化学
- 生物标记分析 生物标记分析
- 孕产妇和胎儿医学 孕产妇和胎儿医学
背景情况:
- 胎盘生长因子 (PlGF) 是预测早产前的关键生物标志物.
- PlGF的临床实用性需要验证分析前的因素和对生物/血液溶解的敏感性.
研究的目的:
- 为了评估PlGF在各种预分析条件下的稳定性.
- 为了确定延迟离心,样本矩阵,运输,储存和冷解周期对PLGF水平的影响.
- 评估plgf对生物素和血液溶解的敏感性.
主要方法:
- 检查了plGF稳定性的血液样本从孕妇 (妊娠年龄≥11周).
- 测量使用KRYPTOR GOLD分析仪进行.
- 稳定性被定义为基线值10%内的平均百分比差异 (PD%).
主要成果:
- PlGF的重复性和实验室内CVs处于可接受范围 (2.2-9.5%).
- 在延迟离心 (最大PD%5.2%),血清和EDTA血 (平均PD%7.2%) 之间,以及在气管运输 (最大PD%8.4%) 后,plGF表现出稳定性.
- 储存和冷解周期显示稳定性 (最大平均PD%7.9%),同时暴露于生物素或血红蛋白 (最大平均PD%4.2%).
结论:
- 在广泛的预分析变量中,plGF是强大而稳定的.
- 这些发现支持在临床环境中可靠地使用PlGF测量来预测孕前.
- PlGF不受常见的干扰物质 (如生物素或血液溶解) 的显著影响.
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