基于新标准WS/T406-2024的凝血分析仪性能验证
任洁 , 王慜杰 , 王威 , 梁峥嵘 , 王悦
河北医科大学学报 ›› 2026, Vol. 47 ›› Issue (6) : 710 -716.
基于新标准WS/T406-2024的凝血分析仪性能验证
Performance verification of coagulation analyzer based on the new standard WS/T406-2024
目的 基于新标准WS/T406-2024建立凝血分析仪的性能验证方案。 方法 以新标准《临床血液学检验常规项目分析质量标准》(WS/T406-2024)为基础,参照《CNAS-GL037临床化学定量检验程序性能验证指南》、《凝血分析仪》(YY/T 0659-2017)等行业标准,建立Werfen ACLTOP750 LAS凝血分析仪的性能验证方案,方案涵盖批内精密度、日间精密度、线性、正确度、实验室间结果的可比性、实验室内结果的可比性、参考区间、携带污染率、可报告范围、溶血、黄疸、脂血/浑浊(hemolysis,icterus,lipemia/turbidity,HIL)指数等;按照验证方案对凝血酶原时间(prothrombin time,PT)、活化部分凝血活酶时间(activated partial thromboplastin time,APTT)、纤维蛋白原(fibrinogen,FIB)、凝血酶时间(thrombin time,TT)、D-二聚体(D-dimer,D-D))、纤维蛋白(原)降解产物[fibrin(ogen) degradation products,FDP]和抗凝血酶Ⅲ(antithrombin Ⅲ,AT-Ⅲ)共7个项目进行性能验证。 结果 批内精密度、日间精密度、正确度、实验室间结果的可比性、实验室内结果的可比性均满足要求。线性回归方程a值均在(1.00±0.05)范围内且相关系数R2均≥0.95,各浓度水平检测均值与理论值的偏差均<10%,线性验证通过。男女2组健康成人所有项目结果均在参考区间范围内,参考区间验证通过。项目内及项目间携带污染率均≤10%。结合临床实践针对不同项目设置适宜稀释度,其中将D-D稀释度扩大至25倍,各项目各浓度检测值与理论值偏差均<10%,符合临床实践的可报告范围验证通过。仪器间HIL指数一致性通过,并与肉眼判断结果相符。 结论 本研究基于WS/T406-2024并结合临床实践建立了完善的凝血分析仪性能验证方案,方案结果全面准确地反映出仪器可用于临床检验的良好的的性能状态,也为检验同行提供参考。
Objective To establish a performance verification protocol for coagulation analyzers based on the new standard WS/T406-2024. Methods We established performance verification protocol for the Werfen ACLTOP750 LAS coagulation analyzer based on the new standard Quality Standards for Analytical Performance of Routine Clinical Hematology Tests (WS/T 406-2024), with reference to industry standards such as Guidance on Performance Verification of Quantitative Clinical Chemistry Testing Procedures (CNAS-GL037) and Coagulation Analyzers (YY/T0659-2017). The protocol included the following parameters: the within-run precision, between-day precision, linearity, trueness, inter-laboratory comparability of results, intra-laboratory comparability of results, reference interval, carry-over rate, reportable range, and hemolysis, icterus, lipemia/turbidity (HIL) indexes. According to the verification protocol, performance verification was conducted on prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB), thrombin time (TT), D-dimer (D-D), fibrin(ogen) degradation products (FDP) and antithrombin Ⅲ (AT-Ⅲ). Results The within-run precision, between-day precision, trueness, inter-laboratory comparability of results, and intra-laboratory comparability of results all met the required specifications. The slopes of the linear regression equations were all within the range of (1.00±0.05) and the correlation coefficients (R²) were all ≥ 0.95. The deviations between the measured mean values and the theoretical values at all concentration levels were less than 10%, thus verifying acceptable linearity. The results for all parameters fell within the established reference intervals for both male and female healthy adult groups, confirming the validity of the reference intervals. Both within-parameter and between-parameter carry-over rates were ≤10%. By establishing appropriate dilution factors for different parameters based on clinical practice, notably expanding the D-D dilution factor to 25-fold, the deviations between the measured values and the theoretical values at various concentrations for all parameters were < 10%, verifying an acceptable reportable range appropriate for clinical practice. The consistency of HIL indexes among instruments was verified and consistent with the visual judgment results. Conclusion This study establishs a comprehensive performance verification protocol for coagulation analyzer based on WS/T406-2024 and clinical practice. The results of the protocol comprehensively and accurately reflect the instrument's good performance, indicating that it is appropriate for clinical testing while also providing a reference for laboratory peers.
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国家科技重大专项(2023ZD0509500)
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