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.
CGM Technology
CGM Technology: A Complete Guide for Healthcare Brands in 2026
A comprehensive guide to CGM technology trends, accuracy metrics, and how healthcare brands can select the right continuous glucose monitoring system.
EverChek Team · June 2, 2026
In depth
Introduction to CGM Technology
For healthcare brands looking to enter the diabetes management market, understanding the core technology behind CGM systems is essential.
In depth
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.
In depth
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.