Control-IQ technology is contraindicated for patients taking hydroxyurea, a medication used in the treatment of diseases including cancer and sickle cell anemia. DO NOT use Control-IQ technology if you are taking hydroxyurea, because your Dexcom G6 CGM readings may be falsely elevated and result in over-delivery of insulin that could result in severe hypoglycemia.
Tandem handles issues with the connection between your Dexcom transmitter and t:slim X2 pump, questions about calibration, the “---” display, and sensor failures after the 2-hour warmup period. To report a sensor failure after the 2-hour warmup period, visit tandemdiabetes.com/G6Form
For all other CGM issues, including sensor failures 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, you should contact Dexcom using one of the options at dexcom.com/contact.