Frequently Asked Questions
What is CGM?
Continuous Glucose Monitoring, or CGM, is the process of automatically measuring the amount of sugar (glucose) in your body every few minutes with a sensor that is placed under your skin. The continuous readings allow the system to use the data to predict the direction your glucose level is heading and will display that information as an arrow. With the actual value of your glucose, plus the arrow, you can see more about what is happening with your glucose.
How does CGM differ from testing with a blood glucose meter
CGM systems available today measure glucose in the interstitial fluid – the fluid between your cells just under the skin. Since CGM is measuring glucose in a different part of your body, it will not be the same concentration as in your blood, but very similar. A blood glucose meter requires that you take a small sample of blood from your fingertip and place it on a test strip that’s inserted inside a meter. The meter provides a glucose value based on the amount of glucose in the blood sample at that moment. CGM automatically and continuously provides glucose values every few minutes, using a sensor inserted just below your skin. The glucose level taken from your blood can be different from the glucose level in the fluid below your skin. With ordinary CGM and FGM systems, you must insert a new sensor through the skin every 7-14 days. With the Eversense CGM System, a single sensor lasts for months.
Is CGM better than testing with a meter?
One significant benefit of CGM is that it provides a “moving” picture of how your glucose levels change over time without samples from fingersticks. This can make it easier to see how diet, exercise and other health factors affect your glucose levels. CGM also provides alerts to let you know if your glucose levels are changing rapidly or approaching unsafe levels. Published research studies show using CGM regularly can reduce A1c without increasing hypoglycemia*.
How is Eversense CGM different from ordinary CGM?
The Eversense CGM System uses fluorescence technology to measure glucose with a tiny sensor implanted under the skin. This advanced CGM technology enables a single sensor to be used for months. A smart transmitter is worn over the sensor using a gentle adhesive that is changed daily. The smart transmitter can be removed and replaced without ending the sensor session. The smart transmitter wirelessly powers the sensor, collects the glucose data and sends it to the Eversense Mobile App.
How does Eversense CGm differ from Flash Glucose Monitoring?
Flash Glucose Monitoring, or FGM, uses a body-worn sensor that requires insertions of a new sensor every 10-14 days. FGM provides a glucose value on demand by using a proprietary reader device. The reader is held over the sensor to wirelessly obtain a glucose value. The Eversense CGM System uses a small sensor that is inserted completely under the skin, and does not have to be changed for up to 6 months. A smart transmitter wirelessly powers the sensor, automatically collects the glucose data every 5 minutes and sends it to the Eversense Mobile App on your smartphone. The continuous readings allow the system to use the data to predict the direction your glucose level is heading and will automatically alert you of high and low glucose events.
How long does the insertion procedure take?
It is an in-office procedure performed by a health care provider that takes just a few minutes.
How does the Eversense CGM System work?
The smart transmitter wirelessly powers the sensor. This activates the sensor, which flashes an LED light source. A fluorescent polymer coating on the outside of the sensor responds to the LED light. Glucose from the body reversibly binds to the coating and the amount of light emitted by the coating rises and falls with the body’s glucose concentration. This emitted light is measured by photodetectors inside the sensor. Special circuitry digitizes the measurements and sends the data to the smart transmitter. The smart transmitter calculates the glucose value, direction, and rate of change and sends the information to the mobile app.
How do the readings from the transmitter get to the app?
The smart transmitter sends glucose data via Bluetooth to a mobile device running the Eversense Mobile Application.
What mobile device are compatible with the Eversense System?
The Eversense CGM System is compatible with various devices. For a complete list visit the Compatibility Page.
How often are glucose readings captured?
The smart transmitter sends glucose readings to the app automatically every 5 minutes.
Can I go swimming while wearing the smart transmitter?
Yes, the smart transmitter is water-resistant. It can be submerged in 1 meter of water for up to 30 minutes.
How do I receive alerts and notifications?
You will receive on-body vibe alerts when you have reached the glucose alert levels you set. You will also see the alert or notification on the Eversense Mobile App.
Does the Eversense CGM System work while traveling on an airplane?
Yes, Bluetooth connection will work while your mobile device is in airplane mode.
Where can I get the Eversense CGM System?
The Eversense CGM System is available in several countries in Europe. Please visit the Distributors Page for a list.
How can I share my data with my health care provider?
The Eversense CGM System is compatible with Roche Smart Pix 3.0, Diasend/Glooko, and the Eversense DMS program. For more information on the Eversense DMS, visit our DMS Page.
*The JDRF CGM Study Group. Diabetes Care, Vol. 32, Number 11, November 2009