How Often Should You Change Your Dexcom G6 Sensor?

Recommended Sensor Lifespan


Dexcom recommends changing the G6 sensor every 10 days to ensure accurate and reliable readings. This is important because over time, sensors can become less accurate and may not provide the most reliable glucose readings. By adhering to the 10-day lifespan, users can maintain the highest level of accuracy in their glucose monitoring.

The 10-day lifespan is based on the performance and technology of the G6 sensor. Dexcom has designed the sensor to provide accurate readings for this specific duration. The sensor is inserted under the skin and measures glucose levels in the interstitial fluid. Over time, the sensor’s performance may decline due to factors such as sensor aging, signal drift, or biofouling. These factors can affect the accuracy of glucose readings and may result in inaccurate readings if the sensor is not changed regularly.

Regularly changing the G6 sensor also ensures optimal adhesion. The sensor is attached to the skin using an adhesive patch, and over time, the adhesive may weaken. By changing the sensor every 10 days, users can maintain good adhesion and prevent the sensor from coming off prematurely. This is crucial for accurate and reliable readings as a loose or detached sensor may not provide accurate glucose measurements.

Another reason for the recommended 10-day lifespan is to prevent sensor failures. Over time, the sensor may experience issues such as signal dropouts or communication errors. By changing the sensor regularly, users can minimize the risk of encountering these issues and ensure continuous and uninterrupted glucose monitoring. This is particularly important for individuals who rely heavily on the G6 system for managing their diabetes, as interruptions in glucose measurements can have serious implications for their health.

It is important to note that individual experiences may vary, and some users may find that their sensors can last longer than 10 days without compromising accuracy. However, it is always recommended to follow the guidelines provided by Dexcom to ensure optimal performance and accurate glucose readings.

Closing Words

Thank you for taking the time to read our article on how often to change the Dexcom G6 sensor. By following the recommended 10-day lifespan, users can ensure accurate and reliable glucose readings, as well as optimal adhesion and minimal risk of sensor failures. Regularly changing the sensor is essential for maintaining the highest level of performance and maximizing the benefits of the Dexcom G6 system. For more information and resources, visit

For detailed instructions on changing the Dexcom G6 sensor, check out our comprehensive tutorial that covers everything you need to know.

Signs of Sensor Degradation

Signs of Sensor Degradation

If you experience persistent sensor errors, inaccurate glucose readings, or inconsistent signal strength, it may be a sign that your Dexcom G6 sensor needs to be replaced before the 10-day mark.

A Dexcom G6 sensor is designed to provide accurate glucose readings for up to 10 days. However, there are instances when the sensor may start to degrade before this timeframe, resulting in unreliable data. It is crucial to be aware of the signs that indicate sensor degradation, as it directly affects the quality of the readings and ultimately affects the management of diabetes.

One of the telltale signs of sensor degradation is persistent sensor errors. If you consistently receive error messages such as “Sensor Error” or “Failed Sensor,” it is a clear indication that something is wrong with the sensor. These errors can occur due to a variety of reasons, including poor sensor insertion, improper sensor calibration, or physical damage to the sensor itself.

Another sign to watch out for is inaccurate glucose readings. The Dexcom G6 sensor uses a small filament inserted under the skin to measure glucose levels interstitially. Over time, this filament may become less effective, leading to inaccurate readings. If you notice a significant discrepancy between your blood glucose meter and the readings displayed on your Dexcom G6 receiver or mobile app, it may be a sign that the sensor is degrading.

Inconsistent signal strength is also an indication of sensor degradation. The Dexcom G6 system relies on a reliable connection between the sensor and the receiver or mobile app to transmit glucose data. If you notice frequent signal dropouts, delayed readings, or loss of connection, it could be due to a deteriorating sensor. These signal issues can significantly impact the overall user experience and make it challenging to manage diabetes effectively.

To ensure accurate and reliable glucose measurements, it is essential to replace the Dexcom G6 sensor when signs of degradation become evident, even if it is before the recommended 10-day mark. By doing so, you can maintain control over your diabetes management and avoid the potential risks associated with using a degraded sensor.

In conclusion, the signs of sensor degradation include persistent errors, inaccurate glucose readings, and inconsistent signal strength. If you experience any of these issues with your Dexcom G6 sensor, it is advisable to replace it before the 10-day mark. Regularly monitoring the performance of your sensor and taking prompt action when signs of degradation arise is key to ensuring accurate diabetes management.

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When it comes to changing the Dexcom G6 sensor, it is important to know how often you should do it for optimal performance.

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