Dexcom G7 Falling Off Problems, Causes & Top Tips for Secure Wear

Dexcom G7 falling off problems


If you’re one of the many individuals relying on Dexcom G7 for continuous glucose monitoring, you understand the importance of accurate and consistent readings. However, dealing with the issue of the sensor falling off can be frustrating and disruptive.

In this guide, we delve into the common problems associated with Dexcom G7 falling off, explore the underlying causes, and provide you with top-tier tips for achieving secure wear that lasts.

Common problems with Dexcom G7 falling off

Although the Dexcom G7 sensor comes with remarkable properties. However, there are certain cons that some users have experienced. Dexcom G7 sensor falling off is one of the most common problems faced by people which may also lead to Dexcom G7 sensor failure. Here are some common problems associated with this issue:

Adhesive quality

The adhesive quality of the Dexcom G7 sensor plays a pivotal role in its longevity on the skin. Insufficient adhesive strength can lead to premature detachment, rendering the device ineffective. It’s not uncommon for users to report issues of the sensor peeling off shortly after application, especially during everyday activities.

Sweating and moisture

Moisture, particularly due to sweating, is a common adversary to sensor adhesion. The Dexcom G7 sensor may struggle to maintain its grip on the skin when exposed to excess sweat, especially during workouts or in hot weather. This issue is compounded for individuals with active lifestyles.

Skin sensitivity

Some users face challenges due to skin sensitivity or allergic reactions to the adhesive used in Dexcom G7 sensors. Redness, itching, and discomfort can prompt users to remove the sensor prematurely, leading to inconsistent monitoring and inaccurate data.

Causes of Dexcom G7 falling off

Your Dexcom G7 sensor may fall off due to multiple reasons. Some of the most common causes are as follows:

Oily skin

People with naturally oily skin might experience difficulties with sensor adhesion. The excess oil can create a barrier between the adhesive and the skin, reducing its effectiveness. This can lead to the sensor not adhering properly or falling off soon after application.

Poor application technique

Proper application of the Dexcom G7 sensor is crucial for ensuring its longevity. Rushing through the application process or failing to adhere to the manufacturer’s guidelines can result in inadequate adhesion. Thoroughly cleaning the area, allowing it to dry completely, and applying even pressure during attachment can make a significant difference.

Physical activity

For those who engage in regular physical activities, the friction and movement of the body can compromise the sensor’s adhesion. High-intensity workouts or activities that involve a lot of body movement can cause the sensor to peel off prematurely.

Top tips for secure wear of Dexcom G7

If you want your Dexcom G7 sensor to stick to your skin firmly, you can take advantage of the following tips in this regard.

Skin preparation

Proper skin preparation is essential for ensuring the Dexcom G7 sensor adheres effectively. Cleanse the application area with mild soap and water, avoiding any oily or lotion-based products that could hinder adhesion. Pat the area dry gently before sensor attachment.

Choosing the right placement

Selecting the right placement for the sensor is crucial. Choose the areas with less friction and movement, such as the upper arm or lower back. Avoid places where clothing or accessories might rub against the sensor.

Using overlays or tapes

Consider using medical tapes or overlays designed to enhance sensor adhesion. These products can provide an extra layer of support, especially during strenuous activities or in humid conditions.

Skin-friendly adhesives

Explore skin-friendly adhesive options if you experience sensitivity to the standard adhesive. Many manufacturers offer hypoallergenic adhesive patches that are gentler on the skin while providing reliable adhesion.

You can buy skin Dexcom Adhesive Patches from us as they significantly improve the grip of sensors over your skin and never let them fall off.

Skin barrier products

For users with sensitive skin, applying a skin barrier product before attaching the sensor can create a protective layer. This can help prevent irritation and improve adhesion.

Buy from reliable vendors

If you are facing the Dexcom G7 sensor falling off problem frequently, it may be due to a non-original device. Therefore, always buy from a reliable vendor. You can trust CGM Monitors in this regard as we are a licensed company offering you various CGM devices. You can buy a Dexcom G7 sensor from us at a market-competitive price.

If you are planning to move to another CGM due to fall-off problems, you can buy a Freestyle Libre 3 sensor from us.

Long-Term strategies for better Dexcom G7 adhesion

Achieving consistent and secure wear of the Dexcom G7 sensor requires a proactive approach. In addition to the aforementioned tips, consider these long-term strategies:

Monitor your adhesion: Keep track of your sensor’s adhesion over time. If you notice a pattern of frequent detachment, explore different techniques and products to improve longevity.

Rotate application sites: Avoid using the same location for every sensor application. Rotating the placement can prevent overuse of a single area and give your skin time to recover.

Hygiene and skin care: Maintain good skin hygiene and health. Regularly exfoliate the application areas to remove dead skin cells, which can interfere with adhesion.


Dealing with Dexcom G7 falling off doesn’t have to be a persistent challenge. By understanding the common problems, and underlying causes, and implementing our top-tier tips, you can achieve secure wear and accurate glucose monitoring.

Remember that finding the right combination of techniques may require some experimentation. By taking a proactive approach and staying attuned to your skin’s needs, you can enjoy more reliable and consistent results from your Dexcom G7 sensor.

Frequently Asked Questions

Why does the Dexcom G7 sensor often fall off?

The adhesive quality of the Dexcom G7 sensor is crucial for longevity on the skin. Inadequate adhesive strength can lead to premature detachment, especially during activities. Sweating, skin sensitivity, and poor application technique are also factors contributing to sensor detachment.

How does sweating affect sensor adhesion?

Excess sweat, especially during workouts, can weaken the sensor’s grip on the skin. Moisture interferes with adhesion, causing the Dexcom G7 sensor to peel off. This issue is particularly prevalent for individuals with active lifestyles.

Can skin sensitivity impact sensor adhesion?

Yes, some users experience skin sensitivity or allergic reactions to the sensor’s adhesive. This can cause discomfort, redness, and itching, leading to premature sensor removal and inaccurate data.

What causes the Dexcom G7 sensor to fall off due to oily skin?

Naturally oily skin can create a barrier between the adhesive and the skin, reducing adhesion effectiveness. The excess oil prevents the sensor from adhering properly, causing it to fall off soon after application.

How can I ensure proper application of the Dexcom G7 sensor?

Proper application is vital. Clean the area thoroughly, allow it to dry, and apply even pressure as per the manufacturer’s guidelines. Rushing or improper application can lead to inadequate adhesion.

Why might physical activity impact sensor adhesion?

Engaging in high-intensity workouts or activities with frequent body movement can compromise the sensor’s adhesion. The friction and movement from these activities can cause the sensor to peel off prematurely.

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