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Watch how CGM works

CGM: More than just a number

Continuous glucose monitoring (CGM) is a small wearable device that tracks your glucose throughout the day and night, notifying you of highs and lows so you can take action.1


CGM helps to minimize the guesswork that comes from making decisions based solely on a number from a blood glucose meter reading, for better diabetes management.*

If this was your meter reading, what would your next step be?

How would you respond if you saw this instead?

Dexcom CGM

Whether you have type 1 or type 2 diabetes, CGM can help you make more informed treatment decisions and can lead to better glycemic control. 


So how does this technology work? A CGM system consists of three parts: a glucose sensor, a transmitter and a small receiver that displays real-time glucose information.

Small sensor

A discrete sensor located just underneath the skin measures your glucose levels.


This piece fits onto the sensor and sends data wirelessly to your display device.

Display device

Glucose activity is shown in vivid colors so you can easily see when it’s trending high, low or within range.

Dexcom CLARITY® cloud-based reporting software

Dexcom CLARITY® is a unique cloud-based reporting system that allows you and your healthcare professional to access and track your glucose data anywhere2 and quickly identify critical glucose patterns.

Interested in getting a Dexcom CGM?

If you are ready to take the next step, the process is simple. Provide us with a few details and we will contact you to begin your order.

* A minimum of 2 fingersticks a day is required for calibration.The Dexcom G5 Mobile Continuous Glucose Monitoring System may require more.



The Dexcom G5 Mobile Continuous Glucose Monitoring System is a glucose monitoring system indicated for detecting trends and tracking patterns in persons (age 2 years and older) with diabetes. CONTRAINDICATIONS Remove the System before MRI, CT scan, or diathermy treatment. The device is MR Unsafe. Do not bring any portion of the System into the MR environment. Taking acetaminophen while wearing the sensor may falsely raise your sensor glucose readings. WARNING Do not use the System for treatment decisions. The System does not replace a blood glucose meter. The System is not approved for use in pregnant women, persons on dialysis or critically ill persons. If a sensor breaks and no portion of it is visible above the skin, do not attempt to remove it. Seek professional medical help if you have infection or inflammation. Report broken sensors to Dexcom Technical Support. Sensor placement is not approved for sites other than under the skin of the belly (ages 2 years and older) or upper buttocks (ages 2-17 years). Your smart device’s internal settings override your app settings. Accessory devices (like a smart watch) might override your smart device’s alert and notification settings. The Share feature must be turned “On” with an active internet connection to communicate glucose information to a Follower. The Follower must download and install the Dexcom Follow App onto a separate smart device with an active internet connection to receive data. Contact Dexcom Toll Free at 877-339-2664 or for detailed indications for use and safety information.


2 Internet service (Wi-Fi or cellular) required.