由于分析干扰,肌素度因人工增加而增加,这些样品被污染了全腹腔营养液
Jinny Jeffery1, Helen Millar1, Rachel Marrington2
1Derriford Combined Laboratory, Derriford Hospital, Plymouth, UK.
全腹腔营养 (TPN) 液体可以干扰肌素测定,导致错误的升高结果. 实验室专业人员必须意识到这种分析干扰,以避免误诊功能障碍.
科学领域:
- 临床化学 临床化学
- 实验室医学 实验室医学
- 分析毒理学分析毒理学
背景情况:
- 一个从全肠外营养 (TPN) 给药的患者样本表明功能障碍,但结果缺乏可靠性.
- 调查显示,在肌素测定中存在积极干扰,通过参考方法证实了这一点.
- 外部质量评估 (EQA) 方案表明依赖于方法的干扰.
研究的目的:
- 为了调查氨酸测定中的分析干扰的原因.
- 为了确定TPN液体的成分是否会导致不准确的肌素测量.
主要方法:
- 输注后收集了剩余的TPN液体 (Nutriflex脂质特殊).
- 在不同度的TPN液被添加到患者血清池中.
- 样品通过EQA方案进行分发,用于肌素和葡萄糖分析.
主要成果:
- TPN液中的一个成分在多个肌素测定中引起了积极干扰.
- 在TPN液体中的高葡萄糖度被确定为Jaffe测试中错误升高肌素结果的原因.
结论:
- 污染TPN液体可能导致虚假的高肌水平,模仿功能衰竭.
- 实验室工作人员必须意识到这种干扰,以防止误诊.
- 准确的患者评估需要考虑TPN的使用和潜在的分析干扰.
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