[Comparison of 3 latest-generation glucose micro-reflectometers]

Area of Science:

• Clinical Chemistry
• Medical Devices
• Diabetes Management

Background:

• Accurate blood glucose monitoring is crucial for diabetes management.
• Evaluating the performance of self-monitoring blood glucose (SMBG) devices is essential.
• Reflectometric and visual readings from SMBG devices require distinct validation.

Purpose of the Study:

• To assess the precision and accuracy of three glucose reflectance meters: Reflolux II (Accu-Chek II), Glucometer II, and Hypocount GA.
• To compare device performance when used by medical personnel versus self-monitoring by patients.
• To evaluate the visual readability of reagent strips for these glucose meters.

Main Methods:

• Comparative analytical study of three glucose reflectance meters.
• Testing precision and accuracy in a diabetic outpatient department setting and during home self-monitoring.
• Visual assessment of reagent strip readability.

Main Results:

• All three glucose meters demonstrated sufficient validity for reflectometric readings.
• Visual evaluation of reagent strips showed higher deviation compared to reflectometric readings.
• Accu-Chek II exhibited precision comparable to laboratory standards (CV 3.3%) under optimal conditions.
• Accu-Chek II (CV 4.8%) and Glucometer II (CV 5.3%) demonstrated sufficient precision for patient self-monitoring.

Conclusions:

• Reflolux II (Accu-Chek II), Glucometer II, and Hypocount GA are valid for reflectometric blood glucose measurement.
• Accu-Chek II and Glucometer II are suitable and recommended for blood glucose self-monitoring due to their precision.
• Visual strip evaluation is less reliable than reflectometric readings for these devices.