How is my time in range (TIR) calculated in the t:connect mobile app?

Your time in range displays the percentage of time your CGM readings are in your target glucose limit. The target glucose limit is set at a default of 70-180 to match the American Diabetes Association recommendations for time in range targets when using continuous glucose monitoring.

 

This limit can be customized in the Glucose Targets and Limits section of your t:connect mobile app settings.

 

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Customer Support

Need help with your Dexcom CGM?

For Dexcom continuous glucose monitoring (CGM) specific issues including calibration prompt will not clear, sensor failure during the 2-hour warmup, “no restarts” alert or physical problems with your sensor or transmitter, such as bleeding, bruising, skin reaction, adhesive issues, applicator issues, or broken wires, please contact Dexcom using one of the options at dexcom.com/contact or report the issue online at https://dexcom.custhelp.com/app/webform.

Please see table for a full list of who to contact for Dexcom CGM issues.

Tandem handles issues such as loss of connection (on pump only) and the invalid transmitter (Alert 29) on pump only.

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