Personal Glucose Meter: Biosensing Platforms for Environmental Toxicants

Area of Science:

• Environmental Science
• Analytical Chemistry
• Biosensor Technology

Background:

• Environmental toxicant detection is shifting from labs to decentralized, point-of-care (POC) monitoring.
• Personal glucose meters (PGMs) offer a low-cost, portable platform for novel biosensing applications.
• Repurposing PGMs reduces cost and development time for rapid, on-site environmental monitoring.

Purpose of the Study:

• To systematically review strategies for adapting PGMs to detect diverse environmental toxicants.
• To critically evaluate sensor designs and identify challenges for POC readiness.
• To propose criteria for developing practical, field-deployable PGM-based biosensors.

Main Methods:

• Systematic review of literature on PGM-based biosensors for ecotoxicant detection.
• Analysis of sensor designs (aptamer, non-enzymatic, antibody-based).
• Evaluation of assay requirements versus POC utility criteria.

Main Results:

• PGMs can detect various chemical (antibiotics, pesticides, metals) and biological (bacteria, viruses) toxicants.
• A trade-off exists between assay sensitivity and practical field deployment.
• Sensitive assays often require complex steps (separation, temperature control) hindering true POC use.

Conclusions:

• PGM-based biosensing is feasible for a broad range of environmental toxicants.
• Key challenges include simplifying protocols, reducing sample preparation, and enhancing robustness.
• Future work should focus on developing assays meeting POC readiness criteria for routine environmental monitoring.