No, you should ideally not use your Freestyle Libre 2 CGM in a sauna. The sensor is designed to function within specific temperature limits, and excessive heat (such as that found in saunas or steam rooms) can damage the sensor, affect its accuracy, or cause it to detach from your skin.
Key Considerations:
Temperature Limits: The Freestyle Libre 2 sensor is rated for temperatures between 10°C to 45°C (50°F to 113°F). Saunas typically exceed this range, reaching temperatures of 70°C to 100°C (158°F to 212°F).
Adhesive Issues: Heat and sweating can cause the sensor’s adhesive to weaken, leading to it falling off prematurely.
Accuracy Risks: High heat exposure may affect the sensor’s readings, making glucose data unreliable.
If you choose to use a sauna and your sensor falls off or malfunctions while in a sauna, we unfortunately won't be able to organise a free replacement, so please take care if using saunas.