Related Experiment Video
Updated: Aug 21, 2026
Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
Accuracy of the EasyTouch blood glucose self-monitoring system: a study of 516 cases
Ken-Shwo Dai1, Der-Yan Tai, Ping Ho
1Bioptik Technology Inc., 1F, No. 9 Industry E. Rd. IV, Science-Based Industrial Park Hsinchu, Hsinchu 300, Taiwan. Dai@bioptik.com.tw
Background:
Self-monitoring blood glucose device is an important tool for diabetes patients to efficiently control their blood glucose concentrations. We evaluated the accuracy of EasyTouch glucose monitoring system.
Methods:
Capillary blood glucose concentrations measured using EasyTouch and the reference values obtained from Yellow Springs Instruments (YSI) 2300 STAT were performed in the Department of Laboratory Medicine, Wei-Gong Memorial Hospital. Results were evaluated using (1) linear regression analysis, (2) Clarke Error Grid analysis, (3) percentage of readings within a defined range of deviation from the reference value, (4) bias plots, and (5) coefficients of variation (CVs) calculated from 60 measurements in series.
Results:
The window of the 516 EasyTouch readings covered a range from 42 to 555 mg/dl. Linear regression analysis yielded a regression slope 0.9972, intercept 1.899 mg/dl, r2 0.9571, and Syx 14.89 mg/dl. A Clarke Error Grid analysis showed 100% of the EasyTouch readings in clinically acceptable zones A and B. Of the EasyTouch readings, 98.3%, 91.9%, 78.3% and 46.9% were found within +/-20%, +/-15%, +/-10%, and +/-5%, respectively, of the reference values. Further analysis showed that the percentage of EasyTouch readings within the defined intervals was similar in three glucose ranges (< or =100, 101-200, and > or =201 mg/dl). The CVs for the four lots of strips (lot 1 to lot 4) ranged from 3.5 to 5.5%, 2.1 to 4.8%, 1.8 to 3.6%, and 3.0 to 5.7%, respectively.
Conclusions:
EasyTouch provides high accurate and precise glucose readings over a wide range of glucose concentrations.
