Written and medically reviewed by Dorcas Morak, Pharm.D
In the world of continuous glucose monitoring (CGM), the Dexcom G7 and FreeStyle Libre 3 are two of the latest innovations from Dexcom and Abbott. Both devices offer significant advancements over their predecessors, promising better accuracy, convenience, and ease of use for people managing type 1 or type 2 diabetes—and even for non-diabetics looking to monitor their glucose levels. But which one is right for you? In this comprehensive comparison, we’ll explore key features like accuracy, sensor lifespan, cost, and ease of use to help you make an informed decision.
What are Continuous Glucose Monitors?
Continuous glucose monitors (CGMs) are devices designed to track glucose levels continuously throughout the day and night. They provide a detailed picture of glucose trends, reducing the need for frequent finger pricks and offering a more convenient way to manage diabetes. These devices measure glucose levels in the interstitial fluid (the fluid between cells) and relay this information to a compatible smartphone or reader via Bluetooth.
Dexcom G7 Overview
The Dexcom G7 is the latest model known for its advanced features and ease of use. It is smaller than its predecessor and can be worn on children's arms, abdomen, or upper buttocks. Each sensor lasts ten days and has a Grace Period to avoid a short warm-up when applying a new sensor. It is waterproof for up to 24 hours at 8 feet depth, making it ideal for swimmers. The G7 transmits data every 5 minutes with a mean absolute relative difference (MARD) accuracy rate of 8.1% for children and 8.2% for adults. MARD is a statistical measure of CGM accuracy, and a lower number indicates higher accuracy. The app offers customizable alerts and clear notifications. The average retail cost is about $453 for three sensors or approximately $5,436 annually. With a Dexcom G7 Sensor RxLess® coupon, you can save about 20% off the retail price.
FreeStyle Libre 3 Overview
The FreeStyle Libre 3, developed by Abbott, is a compact CGM device measuring. It is designed for the upper arm or buttocks and lasts 14 days. It is water-resistant for 30 minutes at 3 feet depth. The Libre 3 transmits data every minute and has an accuracy with a MARD of 9.2% for adults and 9.4% for children. It includes a mandatory low glucose alarm and customizable other alerts. The LibreLink app allows data sharing with up to 20 people. The average retail cost of one sensor is $88, totaling about $2,294 a year. By using a Freestyle Libre 3 Sensor discount coupon from RxLess, you can save an average of 20% off the retail price of each sensor.
FreeStyle Libre 3 Provides a More Granular Glucose Trend.
The FreeStyle Libre 3 transmits data every minute, providing a more granular view of glucose trends than the G7's 5-minute intervals.
Dexcom G7 Offer Better Water Resistance
The Dexcom G7 offers better water resistance, which could be a deciding factor for swimmers or those who frequently engage in water-related activities.
Which of G7 or Libre3 has a better User Experience?
Dexcom G7 users like its slim design and easy setup but report occasional compression lows and accuracy issues. Some find loss of signal alerts annoying. The FreeStyle Libre 3 is praised for its easy application and no-scan feature, a step up from Libre 2. However, its mandatory low glucose alarm and variable support response times can be drawbacks.
Are Dexcom G7 and FreeStyle Libre 3 covered by insurance?
Yes, both Dexcom G7 and FreeStyle Libre 3 are covered by most commercial health insurance plans and Medicare.
Which of Dexcom G7 and FreeStyle Libre 3 is better for me?
Choosing between Dexcom G7 and FreeStyle Libre 3 depends on your needs. Dexcom G7 is ideal if you value water resistance, most accuracy, and a Grace Period. FreeStyle Libre 3 offers a lower price, longer wear time, and more frequent data updates.
With or without insurance, you can unlock real-time pricing and exclusive discounts on your CGM device by joining the RxLess® Assurance Plan. Simply download the free app, and you're all set to start saving!
