Freestyle Libre 3 vs Dexcom G7 CGMs

Continuous glucose monitoring (CGM) is a technology that helps people with diabetes track their blood glucose levels more accurately and conveniently. The Freestyle Libre 3 and Dexcom G7 are two of the most popular CGMs on the market. In this article, we will compare the features of these two devices, including accuracy, wear time, compatibility, ease of use, and pricing.

Accuracy

Accuracy is one of the most critical features of any CGM. Both the Freestyle Libre 3 and Dexcom G7 have been shown to be highly accurate. The Freestyle Libre 3 has a mean absolute difference (MAD) of 9.3 mg/dL when compared to laboratory values, while the Dexcom G7 has a MAD of 8.1 mg/dL. However, it is important to note that accuracy can be influenced by several factors, including calibration and individual physiology.

Wear Time

Wear time is another important feature of CGMs, as longer wear times mean less frequent sensor changes and less inconvenience for users. The Freestyle Libre 3 has a wear time of up to 14 days, while the Dexcom G7 can be worn for up to 10 days. Both devices use small, flexible sensors that are designed to be comfortable and unobtrusive.

Compatibility

Both the Freestyle Libre 3 and Dexcom G7 are compatible with smartphones and smartwatches. The Freestyle Libre 3 uses Bluetooth technology to transmit data to the user's smartphone, while the Dexcom G7 uses proprietary wireless technology. However, it is important to note that not all smartphones and smartwatches are compatible with these devices. It is essential to check the compatibility of your device before purchasing a CGM.

Ease of Use

The Freestyle Libre 3 and Dexcom G7 are both designed to be user-friendly and intuitive. The Freestyle Libre 3 uses a small sensor that is inserted under the skin, while the Dexcom G7 uses a disposable applicator to insert the sensor. Both devices have interfaces that allow users to access their glucose data quickly and easily.

Pricing

Pricing is an important factor to consider when choosing a CGM, as these devices can be costly, and the cost can vary depending on location and insurance coverage. The Freestyle Libre 3 price can be influenced by insurance coverage and other factors. Similarly, the Dexcom G7 sensor also varies in price and can be influenced by insurance coverage and other factors.

Conclusion

The Freestyle Libre 3 and Dexcom G7 are both highly accurate and convenient CGMs that can provide valuable glucose data for people with diabetes. Both devices have similar features, including wear time, compatibility, and ease of use. However, there are some differences in accuracy and pricing. Ultimately, the choice of which CGM to use will depend on individual preferences, needs, and financial considerations. It is important to work with your healthcare provider and insurance company to determine the best options for your individual needs.