CGM & Sensors Product Support

What is a glucose sensor?

A glucose sensor is a tiny electrode that measures your glucose levels. It sits under the skin in your interstitial fluid. Glucose sensors are easily inserted using an automatic insertion device: a needle is used to insert the glucose sensor. The needle is then removed leaving just the tiny flexible electrode under the skin. The glucose sensor is then connected to a transmitter so that readings can be transmitted to your insulin pump.

Do i still need to do fingerstick readings if i use glucose sensors?

Using glucose sensors does not replace the need for fingerstick measurements. You still need to use your blood glucose meter to confirm a Continuous Glucose Monitoring (CGM) reading before treating or to calibrate the CGM system.​


The Enlite™ glucose sensor can be worn for up to 6 days at a time and the Guardian Sensor (3) up to 7 days.  The expiration date is on the outside of the glucose sensor box and on each individual glucose sensor package​.


The transmitter has a self-­contained battery, which can be recharged using the charger supplied, but cannot be changed. As it has a self­contained battery, the transmitter should be disposed of, or recycled, in accordance with local governing ordinances and recycling guidelines.


The transmitter comes with a 12-month warranty.

do i need to refrigerate my glucose sensors?

No.  Glucose sensor should be stored at room temperature.  Glucose sensors must not be frozen.

where should i wear MY GLUCOSE SENSOR?

This can depend on what you’re wearing, your desired comfort level, individual preference or experience. While many people choose the abdominal area, some people prefer the upper buttocks, as this location is less likely to be bumped or affected by clothing at the waistline.

The Enlite sensor can be worn on the Abdomen and buttocks however the Guardian Sensor (3) can be worn on the abdomen and buttocks  in persons aged 7 to 13, and on the abdomen and arm by persons aged 14 and older. 1

how can i replace  a lost SENSOR?

Please call our HelpLine at 1-800-284-4416 for troubleshooting and replacements of lost sensors.

I have insurance - can you tell me if it covers SENSORs?

Yes.  We can help with our complementary insurance verification service.  Please  call us at 1-800-284-4416 or complete the online form to get started.


For the Guardian Sensor (3), for persons 7 to 13 years of age, sensor placement and insertion has been studied in the belly (abdomen) and buttock only and is not approved for other sites. For persons that are 14 years of age and older, sensor placement and insertion has been studied in the belly (abdomen) and back of upper arm only and is not approved for other sites.

Information on this site should not be used as a substitute for talking with your doctor. Always talk with your doctor about diagnosis and treatment information.