Dexcom G6 Sensor Replacement: Easy Steps to Replace Sensor

Dexcom G6 sensor replacement: in the center of the image there is product called dexcom g6 and it has 2 parts g6 sensor & transmiter
Table of Contents:
  • Dexcom G6 Sensor Replacement Guide
  • Understanding the Dexcom G6 (CGM) system
  • Introduction to Dexcom G6 Sensor Replacement
  • Signs It’s Time for G6 Sensor Replacement
  • Steps of Dexcom G6 Sensor Replacement
  • Tips for Successful G6 Sensor Replacement
  • Troubleshooting Common Issues
  • From where to buy Dexcom G6?
  • Conclusion

Dexcom G6 Sensor Replacement Guide

Dexcom G6 sensor replacement, the G6 Continuous Glucose Monitoring (CGM) system, has changed how people manage diabetes. It gives real-time glucose readings without needing to prick your finger. However, replacing the sensor on time ensures the system works properly.

In this article, we’ll discuss why sensor replacement matters, signs that show it’s time for a new sensor, the steps to replace it, and tips for success.


Understanding the Dexcom G6 (CGM) system

    • What is CGM?
    •  How does Dexcom G6 work?

What is CGM?

CGM, which stands for Continuous Glucose Monitoring, is a technology designed to help people with diabetes closely monitor their glucose levels. It provides real-time information about glucose levels throughout the day and night, allowing individuals to monitor and manage their condition effectively.

By continuously tracking glucose levels, CGM empowers people with diabetes to make informed diet, medication, and overall health decisions.

How does Dexcom G6 work?

Dexcom G6 sensor replacement uses a small sensor inserted just below the skin. This sensor measures glucose levels in the fluid between cells, called interstitial fluid, at regular intervals. It does this automatically every few minutes. The sensor sends these glucose readings to a receiver or a compatible smart device.

The transmitter, connected to the sensor, wirelessly communicates the glucose data to the receiver or smart device. This allows users to see their glucose levels in real-time. The receiver or smart device displays the glucose readings, providing users with up-to-date information about their glucose levels.

After the Dexcom G6 sensor replacement, the G6 provided real-time glucose data and trend information. This means users can see how their glucose levels change over time. By accessing this information, individuals with diabetes can make more informed decisions about managing their condition, such as adjusting their insulin doses, making dietary changes, or taking necessary precautions to prevent hypoglycemia or hyperglycemia.


Introduction to Dexcom G6 Sensor Replacement

Dexcom G6 sensor replacement is crucial in providing accurate and real-time glucose readings. However, over time, it may need to be replaced to maintain its effectiveness. Sensor replacement is necessary to ensure that the system continues to provide reliable information about glucose levels, enabling individuals to manage their diabetes effectively.

Importance of Sensor Replacement

    • Maintaining Accuracy
    •  Preventing Complications

Maintaining Accuracy

As time passes, the sensor may lose accuracy due to factors like sensor degradation or poor adhesion to the skin. By changing the Dexcom G6 sensor replacement on time, individuals can ensure that the glucose readings provided by the system remain dependable and trustworthy.

Preventing Complications

Wearing a sensor beyond its recommended lifespan can lead to various complications. The prolonged use of a sensor can cause skin irritation and increase the risk of infection. Moreover, inaccurate readings from an expired sensor can misguide individuals in managing their diabetes, potentially leading to health complications. Therefore, timely sensor replacement prevents such issues and maintains overall well-being.


Signs It’s Time for G6 Sensor Replacement

Several indicators suggest it’s time for Dexcom G6 sensor replacement.

Sensor Error Messages

Sensor error messages indicate that the Dexcom G6 sensor replacement is needed. When the receiver or compatible smart device displays these error messages or alerts, it suggests an issue with the sensor that should be addressed.

Inaccurate Readings

Inaccurate readings can indicate that the sensor is no longer functioning correctly. If the glucose readings consistently differ from fingerstick tests or do not align with your feelings, the Dexcom G6 sensor replacement must be needed to ensure accurate readings.

Sensor Lifespan

It’s essential to adhere to the recommended sensor lifespan of the Dexcom G6, up to 10 days. Exceeding this duration significantly increases the chances of sensor failure and can lead to inaccurate readings. Therefore, replacing the sensor within the recommended timeframe is crucial for maintaining the system’s reliability and obtaining accurate glucose measurements.


Steps of Dexcom G6 Sensor Replacement

    • Gathering necessary Supplies
    •  Preparing the Site
    •  Remove the Old G6 Sensor
    •  Insert the New G6 Sensor
    •  Secure the Dexcom G6 Sensor
    •  Start the G6 Sensor Session 

Gathering Necessary Supplies

    • Get a new Dexcom sensor, the main component of the CGM system.
    •  Grab some alcohol wipes to clean the site before inserting the new sensor.
    •  Consider having skin adhesive or tape on hand, as it can help secure the sensor if needed.
    •  Ensure you have the receiver or smartphone with the Dexcom app, which will display your glucose readings.

Preparing the Site

    • Choose a clean and dry area on your abdomen to place the new sensor.
    •  Use an alcohol wipe to clean the site, removing any dirt or oils thoroughly.
    •  Allow the site to dry completely before moving on to the next step.
    •  Avoid applying lotions or oils to the site, as they can interfere with the sensor’s adhesive.

Remove the G6 Old Sensor

    • Gently peel off the adhesive patch that covers the old sensor.
    •  Take care while removing the old sensor from your skin, being mindful not to damage the wire or the surrounding area.

Insert the New G6 Sensor

    • Unpack the new Dexcom sensor and remove the protective covering.
    •  Hold the sensor applicator at a slight angle and press the plunger to insert the sensor wire into the chosen site on your abdomen.
    •  Once the sensor is inserted, safely discard the applicator.

Secure the Sensor

    • Ensure the sensor is firmly pressed down to ensure it adheres well to the skin.
    •  Use additional skin adhesive or tape to secure the sensor, providing extra support.
    •  Follow the manufacturer’s instructions to attach the transmitter to the sensor wire.

Start the G6 Sensor Session

    • Use your receiver or smartphone with the Dexcom app to initiate a new sensor session.
    •  Follow the instructions provided on your device to complete the process.
    •  Wait for the system to warm up and transmit glucose readings, which you can monitor on your receiver or smartphone.
    •  During the warm-up period, patience is crucial in avoiding making significant diabetes management decisions based on the initial readings. The sensor needs time to calibrate and stabilize, ensuring reliable data for informed decision-making.

Verifying Sensor Accuracy

    • After the warm-up period, it’s time to check your glucose levels on your receiver or smart device. This will give you an indication of your current blood sugar levels. Please consider how you feel and compare it with the readings to ensure they align with your condition.
    •  If you notice that the sensor’s readings seem inaccurate or significantly differ from how you feel, it may be necessary to calibrate the Dexcom G6 system. Calibration is a process that enhances the precision of a sensor by fine-tuning its accuracy. Follow the calibration instructions provided by Dexcom to ensure proper calibration. This process involves comparing the sensor’s readings with a traditional blood glucose meter and inputting the corresponding values into the system.
    •  By checking your glucose levels and calibrating them if necessary, you can ensure that the Dexcom G6 system provides accurate and reliable readings, enabling you to make informed decisions about your diabetes management.

By following these steps, you will complete the Dexcom G6 sensor replacement and continue monitoring your glucose levels accurately and effectively. You can also watch this video to understand it.
Link: Dexcom G6 Sensor Replacement


Tips for Successful G6 Sensor Replacement

To increase the chances of a successful Dexcom G6 sensor replacement, keep the following tips in mind:

Proper Site Selection

Choose areas of your body with enough fat and muscle tissue for sensor insertion. Avoid bony areas or places subject to constant friction or pressure, which may affect sensor accuracy and comfort.

Ensuring Sensor Adhesion

Use adhesive patches or tapes to secure the sensor in place, especially if you’re in an area prone to sweating or movement. This will help prevent the sensor from coming loose or detaching prematurely.

Calibrating the System

Regularly perform calibration checks by using fingerstick tests. This involves comparing the glucose readings from the Dexcom G6 CGM system with a traditional blood glucose meter. Calibration helps ensure the accuracy of the CGM system and allows you to fine-tune your diabetes management.

By following these tips, you can optimize the Dexcom G6 sensor replacement process and enhance the overall performance of your Dexcom G6 CGM system, leading to more reliable glucose readings and better diabetes management.


Troubleshooting Common Issues

Even with careful preparation, users may face common issues when replacing their sensors:

Sensor Insertion Problems

Some users may experience difficulty inserting the sensor due to skin thickness or other variations. It’s essential to follow proper insertion techniques as provided in the instructions. If insertion proves challenging or uncomfortable, consulting a healthcare professional for guidance and assistance might be helpful.

Sensor Not Sticking

Occasionally, the sensor may need to adhere correctly to the skin, which can lead to issues with accuracy and reliability. In such cases, using adhesive patches or tapes can be beneficial. These additional measures help secure the sensor, providing better adhesion and reducing the chances of it coming loose.

Communication Errors

Sometimes, the receiver or compatible smart device may encounter communication errors with the sensor. If this happens, it’s essential to check for potential sources of interference, such as other electronic devices nearby or obstructions. Removing obstructions and keeping the receiver or device near the sensor can help establish and maintain a reliable connection.

By being aware of these potential issues and taking appropriate steps to address them, users can overcome common challenges during Dexcom G6 sensor replacement and ensure the optimal performance of their Dexcom G6 CGM system.


From where to buy Dexcom G6?

You must purchase a new sensor if you’re considering a Dexcom G6 sensor replacement. Finding a trustworthy platform that offers genuine devices at competitive prices is essential to ensure a reliable and cost-effective purchase. That’s where Online Dietary Supplements come in.

At Online Dietary Supplements, we are known for being a highly reputable supplier of Dexcom G6 sensor replacements throughout the USA. We prioritize your comfort and convenience by offering monthly refills, making replacing your Dexcom G6 sensor hassle-free.

Moreover, if you’re considering transitioning to a different continuous glucose monitoring (CGM) device, we also provide the option to purchase Dexcom G7 and other advanced CGM devices.



In conclusion, replacing the Dexcom G6 sensor is a simple process that is crucial for individuals managing diabetes. By following the step-by-step instructions and applying troubleshooting tips, users can maintain optimal sensor performance and have greater peace of mind in managing their condition.

To begin with, gather all the necessary materials and carefully choose a suitable site for sensor insertion. Once you have selected the site, firmly press down the sensor applicator and attach the transmitter with a snug click. If necessary, use adhesive patches or tapes to ensure the sensor stays securely in place.

By understanding and following these steps, individuals can rely on the Dexcom G6 system to provide accurate and continuous glucose readings. This enables them to make informed decisions about their diabetes management.

In summary, by following the proper procedures and taking advantage of the Dexcom G6 system, individuals can confidently monitor their glucose levels and effectively manage their diabetes.

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Frequently Asked Questions

When is Dexcom G6 sensor replacement needed?

The Dexcom G6 sensor should be replaced every ten days to maintain precise glucose readings. In the event that it becomes loose, damaged, or dislodged before the ten-day period, it may also necessitate replacement.

Why does Dexcom G6 take 2 hours?

For optimal performance, the Dexcom G6 Sensor requires a 2-hour initialization period to acclimate to its placement beneath your skin. During this time, it adjusts and stabilizes its readings to provide accurate glucose measurements.

What is the 20 rule for Dexcom G6?

According to clinical studies, home glucose testing devices are deemed accurate if they adhere to the 20 rule, also referred to as the %20/20 rule. In cases where the laboratory result exceeds 5.5 mmol/L (100 mg/dL), the continuous glucose monitoring (CGM) value must not deviate more than 20% above or below that threshold.

Can a Dexcom go anywhere?

The Dexcom G6 sensors can be placed in three different areas: the abdomen, the back of the upper arm (recommended for patients aged 2 years and above), or the upper buttocks (recommended for patients aged 2-17 years).

Is Dexcom G6 better on arm or stomach?

Based on our research findings, the Dexcom G7 sensors are designed to be inserted either on the back of the upper arm (recommended for users aged 2 years and above) or the upper buttocks (recommended for users aged 2-6 years old). However, our research indicates that wearing the sensor on the back of the upper arm consistently delivers optimal performance.


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