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.​

Where should I wear my Glucose Sensor?

How long do sensors last? do they expire?

Both the Guardian 4 sensor and Guardian Sensor (3) can be worn for up to 7 days. Remember, the transmitter is re-usable and should be re-charged after each sensor wear.

What is the warranty on my transmitter?

Both the Guardian 4 transmitter and Guardian Link (3) Transmitters come with a 12-month warranty.

What type of batteries does the transmitter use?

Both the Guardian 4 transmitter and Guardian Link (3) Transmitters have 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.

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.

How can i replace  a lost SENSOR?

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