Libre 2 (requires scanning)
The Libre 2 sensor stores up to 8 hours of glucose data. As long as you scan at least once every 8 hours, all your data will be captured. We recommend scanning often throughout the day: right when you wake up, before meals, 1 hour after meals, and before bed. There's no limit to how often you can scan, and the more you do, the more real-time insight you gain into your glucose levels.
If more than 8 hours pass between scans, there will be gaps in your graph. See Why Are There Blank Spaces in My Glucose Data or Graphs? for troubleshooting.
Libre 3 Plus (streams automatically via Bluetooth)
The Libre 3 Plus sensor streams data continuously to your phone over Bluetooth, so you won't need to scan after starting the sensor. Readings will be interrupted if your phone's Bluetooth is turned off, the Libre app is closed, or your phone is powered off. Your sensor stores up to 8 hours of data, so as long as the connection is re-established within that window, you'll have continuous glucose readings.
Need Help?
Our team is always happy to assist. Reach us at [email protected] or through our in-app messenger.