Dexcom
G7 & Stelo - Leading the way in CGM technology
Dexcom is a pioneer in continuous glucose monitoring, known for highly accurate sensors and seamless smartphone integration. Their G7 system represents the latest in CGM technology with the smallest and most discreet sensor yet.
Products
Dexcom G7
The most advanced CGM system with the smallest sensor footprint and fastest warm-up time.
Wear Time
10 days
Warm-up Time
30 minutes
Accuracy
MARD: 8.2%
Calibration
Factory calibrated - no fingersticks required
Water Resistance
IP68 - up to 8 feet for 24 hours
Connectivity
Price
$299-$349/month without insurance
Insurance: Covered by most major insurance plans and Medicare
Dexcom Stelo
Over-the-counter CGM designed for people with Type 2 diabetes not on insulin, or for metabolic health optimization.
Wear Time
15 days
Warm-up Time
30 minutes
Accuracy
MARD: 9.0%
Calibration
Factory calibrated
Water Resistance
IP68
Connectivity
Price
$99/month (2 sensors)
Insurance: Available without prescription - cash pay only
Pros & Cons
Advantages
- Industry-leading accuracy
- Smallest sensor on the market
- 30-minute warm-up time
- Excellent smartphone app
- Apple Watch integration
- Share feature for caregivers
Considerations
- Higher cost than competitors
- 10-day wear (vs 14 for some)
- Adhesive may irritate sensitive skin
User Reviews
Life-changing technology
The G7 has completely transformed how I manage my Type 1 diabetes. The accuracy is incredible and the 30-minute warmup means minimal downtime between sensors. The app integration with my Apple Watch is seamless.
Great but pricey
Excellent accuracy and the sensor is so small you forget it's there. My only complaint is the cost without insurance. Customer service has been helpful when I've had questions.
Perfect for my active lifestyle
I swim daily and the G7 handles it perfectly. No issues with water exposure and the adhesive stays put. The sharing feature gives my family peace of mind.
Learn More About CGMs
Explore our educational content to get the most out of your Dexcom CGM.
Over-the-Counter (OTC) CGM Options
In 2024, the FDA cleared the first OTC CGMs, led by Dexcom's Stelo and Abbott's Lingo and Libre Rio, democratizing access to metabolic data.
Accuracy and Interstitial Lag Time
Continuous Glucose Monitors (CGMs) measure glucose in the interstitial fluid (ISF) rather than the blood, creating an inherent lag time of 5–20 minutes.
Insurance Coverage and Medicare Criteria
CGM insurance coverage has expanded significantly following the CMS 2023 update, with Medicare, commercial insurance, and Medicaid all providing various coverage options.
Sensor Insertion and Site Rotation
Proper sensor insertion technique and regular site rotation are essential for accurate CGM readings and skin health.
Interpreting Trend Arrows
Trend arrows on CGMs visualize the Rate of Change (ROC) of glucose, allowing users to predict future levels and adjust treatment proactively.
Troubleshooting Common Sensor Errors
Understanding the difference between technical failures and physiological artifacts helps users troubleshoot CGM errors effectively.
Compare Other Manufacturers
See how other CGM manufacturers compare.
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