Introduction to CGM Technology
Continuous Glucose Monitoring (CGM) has transformed diabetes management over the past decade. Unlike traditional fingerstick methods that provide a single glucose reading at a point in time, CGM systems deliver real-time glucose data every few minutes, giving users and healthcare providers a complete picture of glucose trends and patterns.
For healthcare brands looking to enter the diabetes management market, understanding the core technology behind CGM systems is essential.
How CGM Sensors Work
Modern CGM systems use a thin, flexible sensor filament inserted just beneath the skin to measure glucose levels in the interstitial fluid. The sensor contains a glucose oxidase enzyme that reacts with glucose molecules, creating an electrical signal proportional to the glucose concentration.
Key components of a CGM system include:
- Sensor: The disposable component worn for 7-14 days, containing the glucose-sensing element.
- Transmitter: A reusable electronic module that powers the sensor and transmits data wirelessly.
- Applicator: A device that inserts the sensor consistently and painlessly.
- Mobile App: Software that displays glucose readings, trends, and alerts.
MARD: The Accuracy Standard
MARD (Mean Absolute Relative Difference) is the primary metric used to evaluate CGM accuracy. It measures the average difference between CGM readings and reference blood glucose values:
- Below 10% MARD: Considered excellent accuracy for clinical use
- Below 8% MARD: State-of-the-art performance (EverChek standard)
- Above 10% MARD: May require frequent calibration
EverChek achieves MARD values below 8%, among the most accurate CGM systems available for B2B partnerships.
Key Features Healthcare Brands Should Look For
- Factory Calibration: No fingerstick calibration needed, improving user experience.
- Waterproof (IPX8): Allows showering, swimming, and exercise without removal.
- Wear Duration: 14-day wear time reduces sensor changes.
- Data Integration: API/SDK access for integration with digital health platforms.
The Growing CGM Market
The global CGM market is projected to reach $16 billion by 2028. For healthcare brands, this represents a significant opportunity. By partnering with an experienced manufacturer like EverChek, businesses can bring branded CGM products to market faster with lower upfront investment.