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Article

A Pilot Trial to Evaluate the Accuracy of a Novel Non-Invasive Glucose Meter

by 1,2, 2 and 1,2,*
1
Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
2
Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer. Derech Sheba 2, Ramat-Gan 5266202, Israel
*
Author to whom correspondence should be addressed.
Academic Editors: Martina Vettoretti, Andrea Facchinetti and Giovanni Sparacino
Sensors 2021, 21(20), 6704; https://doi.org/10.3390/s21206704
Received: 17 September 2021 / Revised: 5 October 2021 / Accepted: 7 October 2021 / Published: 9 October 2021
(This article belongs to the Special Issue Recent Advances in Continuous Glucose Monitoring Sensors)
The non-invasive self-monitoring of blood glucose (SMBG) has been the subject of intense investigation over recent decades. We conducted a pilot study designed to examine a novel non-invasive glucometer, the HGR GWave, utilizing radiofrequency (RF) sensing. Blood glucose levels assessed by this HGR prototype were compared to measurements performed by a hexokinase core laboratory assay during an oral glucose tolerance test (oGTT) for 5 subjects with type 2 diabetes. The HGR glucose meter readings were also compared to two Abbot Freestyle® glucose meters, which were also used for calibration. The accuracy of the results was evaluated through the calculation of relative absolute difference (RAD), specified percentage differences between 43 reference glucose measurements, and using comparator measurements. The median RAD was −4.787. We detected 79.04%, 92.99% and 97.64% of HGR readings within ±10%, ±15% and ±20% of the reference glucose measurements. The HGR readings had a high correlation with reference lab glucose measurements with R2 = 0.924 (95% CI 0.929–0.979; p < 0.0001). When compared to the Freestyle® glucose meters 94.3% and 100% of the readings were within ±5% and ±10%, with R2 = 0.975 (0.975–0.994; p < 0.0001). The HGR prototype glucose meter was found to be accurate in detecting real-time blood glucose during an oGTT in this small pilot study. A study with a broader range of blood glucose levels is needed to further assess its accuracy and its suitability for clinical use. View Full-Text
Keywords: glucometer; non-invasive glucose measurement; non-invasive glucose meter; radio frequency; self-monitoring of blood glucose glucometer; non-invasive glucose measurement; non-invasive glucose meter; radio frequency; self-monitoring of blood glucose
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MDPI and ACS Style

Schwarz, Y.; Konvalina, N.; Tirosh, A. A Pilot Trial to Evaluate the Accuracy of a Novel Non-Invasive Glucose Meter. Sensors 2021, 21, 6704. https://doi.org/10.3390/s21206704

AMA Style

Schwarz Y, Konvalina N, Tirosh A. A Pilot Trial to Evaluate the Accuracy of a Novel Non-Invasive Glucose Meter. Sensors. 2021; 21(20):6704. https://doi.org/10.3390/s21206704

Chicago/Turabian Style

Schwarz, Yair, Noa Konvalina, and Amir Tirosh. 2021. "A Pilot Trial to Evaluate the Accuracy of a Novel Non-Invasive Glucose Meter" Sensors 21, no. 20: 6704. https://doi.org/10.3390/s21206704

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