CLSI EP06⁃Ed2 与 EP06⁃A 在定量测量程序线性验证应用中的差异
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Differences between CLSI EP06⁃Ed2 and EP06⁃A in linear verification application of quantitative measurement procedures
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    摘要:

    目的 以糖类抗原( CA50)、糖类抗原 19?9( CA19?9)、孕酮( Prog) 为例,探讨美国临床和实验室标准协会( CLSI) EP06?Ed2与 EP06?A 在定量测量程序线性验证应用中的差异。 方法 通过选择接近线性区间上下限的样本,按比例配制 7 例 样本,各重复测定 2 次。 按 EP06?Ed2 进行加权线性回归,置信区间(CI)与允许线性偏差(ADL)范围相交视为结果可接受;以 EP06?A 评价最适回归方程与理论线性方程之间差异小于允许偏差视为结果可接受;进而比较两者的差异。 结果 CA50 以 EP06?Ed2 判断各浓度均值和 CI 均在 ADL 范围内,线性区间验证可接受;以 EP06?A 判断各浓度与理论值的偏倚或偏差均在 可允许范围内,线性区间验证可接受。 CA19?9 以 EP06?Ed2 判断各浓度均值和 CI 均在 ADL 范围内,线性区间验证可接受;以 EP06?A 判断最低浓度的偏差为-23.815 8 U / mL,超过允许偏差±6 U / mL,线性区间验证不可接受。 Prog 以 EP06?Ed2 判断浓 度 2 均值为 33.45 ng / mL,在 ADL 之外,但部分 CI 在 ADL 范围内,线性区间验证在统计学上可接受;以 EP06?A 判断最低浓度 的偏差为 1.189 0 ng / mL,超过允许偏差±0.64 ng / mL,线性区间验证不可接受。 结论 CLSI EP06?Ed2 相较 EP06?A 更符合实 际临床使用需求,是值得借鉴的新的定量测量程序线性区间验证指南。

    Abstract:

    Objective To discusses the differences between CLSI EP06?Ed2 and EP06?A in linear verification application of quantita? tive measurement program by using carbohydrate antigen 50(CA50), carbohydrate antigen 19?9(CA19?9) and progesterone (Prog) as examples. Methods By selecting the samples close to the upper and lower limits of the linear interval, 7 samples were prepared pro? portionally, and each sample was determined twice. According to EP06?Ed2, the weighted linear regression was carried out and the in? tersection of confidence interval (CI) with the allowable range of average deviation from linearity (ADL) was regarded as acceptable result. When the difference between the optimal regression equation and the theoretical linear equation judged by EP06?A was less than the allowable deviation, the results were considered as acceptable, and then the differences between the two regression equations were compared. Results The average values of CA50 and CI at each concentration judged by EP06?Ed2 were all within ADL range, and the linear interval verification was acceptable. The biases or deviations determined by EP06?A between each concentration and theoretical value were within the allowable range, and the linear interval verification was acceptable. The average concentration and CI of CA19?9 judged by EP06?Ed2 were within ADL range and the linear interval verification was acceptable. The deviation of the lowest concentra? tion judged by EP06?A was -23.815 8 U / mL exceeding ±6 U / mL above the allowable deviation, so the linear interval verification was unacceptable. The average value of Prog concentration 2 was 33.45 ng / mL which was out of the ADL range judged by EP06?Ed2, but part of CI was within ADL range and the linear interval verification was statistically acceptable. The deviation of the lowest concentration judged by EP06?A was 1.189 0 ng / mL exceeding ±0.64 ng / mL above the allowable deviation, so the linear interval verification was un? acceptable. Conclusion Compared with EP06?A, CLSI EP06?Ed2 should be more suitable for actual requirements of clinical applica? tion, thus it may be a new guideline for linear interval verification of quantitative measurement program.

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谢轩波,刘洋洋,单汉明,李晓博. CLSI EP06⁃Ed2 与 EP06⁃A 在定量测量程序线性验证应用中的差异[J].临床检验杂志,2021,39(11):863-867

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  • 收稿日期:2021-04-22
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  • 在线发布日期: 2022-01-26
  • 出版日期: 2021-11-28
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