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Enzyme-assisted glucose quantification for a painless Lab-on-PCB patch implementation.

Gorachand Dutta1, Anna Regoutz2, Despina Moschou1

  • 1Centre for Biosensors, Bioelectronics and Biodevices (C3Bio), Department of Electronic & Electrical Engineering, University of Bath, Bath, BA2 7AY, UK.

Biosensors & Bioelectronics
|August 18, 2020
PubMed
Summary
This summary is machine-generated.

This study presents a novel Lab-on-PCB device for continuous glucose monitoring in diabetic patients. The biosensor offers high sensitivity and rapid results, enabling effective diabetes management.

Keywords:
ChronoamperometryElectrochemical biosensorFlow rate dependenceGlucoseLab-on-PCBMicrofluidics

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Area of Science:

  • Biomedical Engineering
  • Biosensor Technology
  • Wearable Health Devices

Background:

  • Current glucose monitoring methods for diabetes management present challenges in terms of invasiveness and real-time data acquisition.
  • Wearable biosensing patches require specialized designs to accommodate continuous interstitial fluid extraction and analysis.

Purpose of the Study:

  • To develop and evaluate a fully printed circuit board (PCB)-integrated enzymatic glucose quantification Lab-on-Chip device for wearable patches.
  • To assess the biosensing platform's compatibility with interstitial fluid glucose levels and the impact of sample flow rate.

Main Methods:

  • Utilized a chronoamperometric approach for glucose detection.
  • Immobilized glucose oxidase covalently onto PCB-integrated electrodes.
  • Evaluated performance under varying sample flow rates relevant to interstitial fluid extraction.

Main Results:

  • Achieved μM range sensitivity, high specificity, and good reproducibility for glucose detection.
  • Demonstrated a detection range of 10 μM to 9 mM with a lower limit of detection of 10 μM.
  • Confirmed compatibility with interstitial fluid glucose levels and a sample-to-answer time under 1 minute.

Conclusions:

  • The Lab-on-PCB device shows significant potential for cost-effective, painless diabetes management.
  • Increased flow rates enhance biosensor sensitivity, indicating a promising design for wearable applications.
  • This work paves the way for advanced microsystems in continuous diabetes monitoring.