Vallera D A, Bissell M G, Barron W
Department of Pathology, University of Chicago Hospitals, Illinois.
Am J Clin Pathol. 1991 Feb;95(2):247-52. doi: 10.1093/ajcp/95.2.247.
Glucose was determined on capillary and venous blood samples from 274 adult diabetics by three different methodologies: the Glucoscan 2000 and Accu-Check II portable glucose meters (capillary) and the Kodak Ektachem 700 analyzer (venous). Both glucose meters correlated significantly with the Ektachem results. A significant positive bias was found for the Glucoscan compared with Ektachem, not found with the Accu-Check II. The Accu-Check performed better than the Glucoscan at venous plasma glucose levels less than 1 g/L. The mean error of Glucoscan determinations was significantly greater and biased positive when the measurement was performed within 4 hours of eating, whereas no such effect was seen with Accu-Check error. Multiple regression analysis revealed that the Glucoscan measurement was independently influenced by both venous plasma glucose and prandial state, whereas the Accu-Check II measurement was not dependent on either variable. The within-run precision for both glucose meters were comparable.
采用三种不同方法，对274名成年糖尿病患者的毛细血管血样和静脉血样中的葡萄糖进行了测定：Glucoscan 2000和Accu-Check II便携式血糖仪（毛细血管血）以及柯达Ektachem 700分析仪（静脉血）。两种血糖仪的结果与Ektachem的结果均显著相关。与Ektachem相比，Glucoscan存在显著的正偏差，而Accu-Check II未发现此偏差。在静脉血浆葡萄糖水平低于1 g/L时，Accu-Check的表现优于Glucoscan。当在进食后4小时内进行测量时，Glucoscan测定的平均误差显著更大且呈正偏差，而Accu-Check的误差未观察到此类效应。多元回归分析显示，Glucoscan测量独立受静脉血浆葡萄糖和用餐状态影响，而Accu-Check II测量不依赖于任何一个变量。两种血糖仪的批内精密度相当。
