Background The professional-use systems HemoCue® Glucose 201+ (HC201+) and HemoCue® Glucose 201 RT (HC201RT) are widely used for point-of-care testing (POCT) of blood glucose (BG). HC201RT utilizes unit-use microcuvettes which can be stored at room temperature, whereas HC201+ microcuvettes have to be stored at <8 °C. In this study, system accuracy of HC201+ and HC201RT was evaluated using capillary and venous blood samples. Methods For each system, two reagent system lots were evaluated within a period of 2 years based on testing procedures of ISO 15197:2013, a standard applicable for self-monitoring of blood glucose (SMBG) systems. For each reagent system lot, the investigation was performed by using 100 capillary and 95 to 99 venous blood samples. Comparison measurements were performed with a hexokinase laboratory method. Accuracy criteria of ISO 15197:2013 and POCT12-A3 were applied. In addition, bias was analyzed according to Bland and Altman, and error grid analysis was performed. Results When measuring capillary samples, both systems fulfilled accuracy requirements of ISO 15197:2013 and POCT12-A3 with the investigated reagent system lots. When measuring venous samples, only HC201+ fulfilled these requirements. Bias between HC201+ and reference measurements was more consistent over venous and capillary samples and microcuvette lots than for HC201RT. Error grid analysis showed that clinical actions might have been different depending on which system was used. Conclusions In this study, HC201+ showed a high level of accuracy irrespective of the sample type (capillary or venous). In contrast, HC201RT measurement results were markedly affected by the type of sample.

译文

背景专业使用系统HemoCue®葡萄糖201 + (HC201 +) 和血红素®葡萄糖201 RT (HC201RT) 广泛用于血糖 (BG) 的即时检测 (POCT)。HC201RT使用单位使用的微量比色皿,可以在室温下存储,而HC201微量比色皿必须在 <8 °C下存储。在这项研究中,使用毛细血管和静脉血样本评估了HC201和HC201RT的系统准确性。方法对于每个系统,根据ISO 15197:2013 (适用于血糖自我监测 (SMBG) 系统的标准) 的测试程序,在2年内评估两个试剂系统批次。对于每个试剂系统批次,通过使用100毛细管和95至99个静脉血样品进行调查。使用己糖激酶实验室方法进行比较测量。应用了ISO 15197:2013和POCT12-A3的准确性标准。此外,根据Bland和Altman分析了偏差,并进行了误差网格分析。结果在测量毛细管样品时,两个系统均满足ISO 15197:2013的精度要求,并与所研究的试剂系统批次POCT12-A3。测量静脉样本时,只有HC201满足这些要求。与HC201RT相比,在静脉和毛细血管样品以及微量比色皿中,HC201和参考测量值之间的偏差更为一致。错误网格分析表明,根据使用的系统,临床行为可能有所不同。结论在这项研究中,无论样品类型 (毛细血管或静脉) 如何,HC201都显示出较高的准确性。相比之下,HC201RT测量结果明显受样品类型的影响。

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