测量血总在血自由电离之前 - - 这种可能性具有负担得起的陷
Tobias Skou Kjøller1, Bent S Lind1, Peter Schwarz2,3
1Department of Clinical Biochemistry, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.
Scandinavian journal of clinical and laboratory investigation
|February 21, 2024
概括
一个新的反射测试首先测量总,如果需要,然后测量自由电离,可以减少68%的自由电离测试. 这种方法可以准确地评估的状态,同时尽量减少成本和错误.
科学领域:
- 临床化学 临床化学
- 实验室医学 实验室医学
- 生物化学 生物化学
背景情况:
- 自由电离 (fCa) 是评估状况的黄金标准,但成本高且容易出现错误.
- 总 (tCa) 和对白蛋白调整的 (aCa) 是替代品,但在准确性方面存在局限性.
- 与fCa相关的预分析和分析错误会影响患者的诊断.
研究的目的:
- 评估fCa测量的反射测试策略.
- 通过第一次测试tCa来评估减少fCa测量的可行性.
- 为了比较tCa,aCa的诊断准确性,以及建议的低血和高血反应测试.
主要方法:
- 对1815名同时测量fCa,tCa和aCa的患者进行了回顾性分析.
- 线性回归分析以评估fCa,tCa和aCa之间的关联,按白蛋白水平分层.
- 在不同测试方法中对低血和高血的错误分类率的评估.
主要成果:
- tCa/aCa和fCa之间的线性在白蛋白<35g/L (R2:0.80-0.90) 时最强,在白蛋白>40g/L (R2:0.58-0.59) 时最弱.
- 与tCa相比,素调整后的 (aCa) 显示出更高的错误分类率 (25%低,21%高血症).
- 反射测试纠正了tCa错误分类,导致只有9%的假阴性,减少了fCa测试的68%.
结论:
- 一个反射测试策略显著减少了直接fCa测量的需要.
- 这种方法保持了对状况的诊断准确性,最大限度地减少了错误.
- 反射检测为评估水平提供了一种具有成本效益和可靠的替代方案.
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