Continuous Glucose Monitoring
Comprehensive research on CGM technology, from sensor mechanisms and accuracy analysis to non-invasive monitoring innovations and automated insulin delivery systems.
Most Read CGM Articles
Direct links to core articles across the CGM research library
Adverse Events, Skin Reactions, and Safety Warnings
Continuous Glucose Monitors (CGMs) carry their own safety risks. **Dermatological issues** such as redness and itching are the most common reason peop...
CGM Sensor Technology Mechanisms
How CGM sensor technology works: the glucose oxidase and optical mechanisms behind continuous glucose monitoring sensors from Dexcom, Abbott, MiniMed ...
Comparative Accuracy and MARD Analysis
How MARD (mean absolute relative difference) is calculated and used to compare the accuracy of CGM systems, with published figures and study design no...
Data Ecosystems and Remote Monitoring
How continuous glucose monitoring (CGM) data ecosystems move readings from sensor to phone to cloud, and how remote monitoring works for caregivers (D...
Implantable Long-Term CGM Solutions
Implantable long-term CGM systems place a glucose sensor fully under the skin, and the current Eversense 365 is labeled for up to 1 year of wear. We e...
Interoperability with Automated Insulin Delivery (AID)
How continuous glucose monitors (CGMs) achieve interoperability with automated insulin delivery (AID) systems through the FDA's separate iCGM, ACE pum...
Major US Manufacturers and Product Lines
As of October 2026, the major US continuous glucose monitoring (CGM) manufacturers are Dexcom, Abbott, MiniMed and Senseonics, and their product lines...
Non-Invasive and Experimental Glucose Monitoring
Non-Invasive Glucose Monitoring (NIGM) aims to measure glucose without needles, using optical (spectroscopy), radio-frequency (RF) or electrochemical ...
Over-the-Counter (OTC) CGM Market
The Over-the-Counter (OTC) CGM market began in 2024, when the FDA cleared **Dexcom's Stelo** (March) and **Abbott's Lingo and Libre Rio** (May and Jun...
Patent Landscape and Intellectual Property
An overview of the patent landscape and intellectual property in continuous glucose monitoring (CGM), including how long CGM patents last and real sen...
Automated Insulin Delivery (AID) Algorithms
Automated insulin delivery (AID) algorithms use CGM readings to decide how much insulin a pump delivers. We explain the main algorithm types (PID, MPC...
Automated Insulin Delivery (AID) System Integration
Automated insulin delivery (AID) systems integrate a CGM, an insulin pump and dosing software. We compare how MiniMed's 780G and Flex and Tandem's Con...
Explore by Category
Navigate our comprehensive CGM research library organized by topic area
Safety & Warnings
Adverse events, skin reactions, regulatory warnings, and safety considerations for CGM users
Technology & Innovation
Sensor mechanisms, MARD analysis, algorithms, and calibration technologies
Manufacturers & Products
Dexcom, Abbott, Medtronic, Senseonics product lines and market analysis
Research & Future Tech
Non-invasive monitoring, AI/ML applications, and emerging CGM technologies
Learning Paths
Structured learning journeys to master CGM concepts, from beginner basics to advanced technology deep dives
CGM Fundamentals
Start here! Learn the basics of continuous glucose monitoring technology.
Safety & Best Practices
Understand adverse events, skin reactions, and how to use CGM safely.
Advanced Technology Deep Dive
Explore cutting-edge CGM technology, algorithms, and sensor science.
Future of Glucose Monitoring
Discover non-invasive monitoring, implantables, and emerging technologies.
Featured Research
Essential reading on continuous glucose monitoring
Adverse Events, Skin Reactions, and Safety Warnings
Continuous Glucose Monitors (CGMs) carry their own safety risks. **Dermatological issues** such as redness and itching are the most common reason peop...
CGM Sensor Technology Mechanisms
How CGM sensor technology works: the glucose oxidase and optical mechanisms behind continuous glucose monitoring sensors from Dexcom, Abbott, MiniMed ...
Comparative Accuracy and MARD Analysis
How MARD (mean absolute relative difference) is calculated and used to compare the accuracy of CGM systems, with published figures and study design no...
Data Ecosystems and Remote Monitoring
How continuous glucose monitoring (CGM) data ecosystems move readings from sensor to phone to cloud, and how remote monitoring works for caregivers (D...
Implantable Long-Term CGM Solutions
Implantable long-term CGM systems place a glucose sensor fully under the skin, and the current Eversense 365 is labeled for up to 1 year of wear. We e...
Interoperability with Automated Insulin Delivery (AID)
How continuous glucose monitors (CGMs) achieve interoperability with automated insulin delivery (AID) systems through the FDA's separate iCGM, ACE pum...
Compare CGM Systems
Interactive side-by-side comparison of leading continuous glucose monitoring devices
CGM Device Comparison
Compare specifications across major CGM systems
CGM Evolution Timeline
Key milestones in the development of continuous glucose monitoring technology
First FDA-Approved CGM
Dexcom STS Launch
FreeStyle Navigator
Dexcom G4 Platinum
FreeStyle Libre Launch
Dexcom G6 and Eversense
Dexcom G7
OTC CGM Market
CGM System Comparison
Compare leading CGM systems from major manufacturers
Manufacturer Comparison
| Feature | Dexcom G7 | FreeStyle Libre 3 Plus | Guardian 4 |
|---|---|---|---|
| Sensor Life | 10 days | 15 days | 7 days |
| Warmup Time | 30 min | 60 min | 2 hours |
| MARD (adults) | 8.2% | 8.2% | 10.6% |
| Factory Calibrated | Yes | Yes | Yes (with MiniMed 780G) |
| AID Integration | Omnipod 5, Tandem, iLet | Omnipod 5, t:slim X2, iLet, twiist | MiniMed 780G only |
Also Explore Test Strips Research
Comprehensive research on blood glucose monitoring test strips
Have Unused CGM Supplies?
Turn your extra Dexcom, FreeStyle Libre, or other CGM supplies into cash. We offer competitive prices and free shipping.
Get a Free Quote