Request a CGM sensor replacement

Sensor accuracy questions

Have a question about your sensors accuracy or calibration? Do not replace your sensor just yet. Send us an email or tap Help in the app to contact us with more details and we'll see how we can help. You can also find more information about Sensor Calibration here.

Sensor error

It's possible for some sensors to fail early and show an error in the LibreLink app. If this happens, please send us an email ( with a screenshot of your app and we'll do our best to send out a replacement sensor. If you still have a second sensor handy, you can apply it now.

Sensor fell off

If your sensor comes off early and you were wearing the performance cover, we'll be happy to provide you with a replacement sensor. Please email us ( with details, any relevant photos, and your correct shipping address so we can send a replacement your way.

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