Sorry. Let's sort this out.
We can't prevent a failure. We can make sure you're not figuring it out alone.
Do you have a backup?
A replacement from the maker can take a while to arrive. If you're without one now, we can ship the same product today.
Get the failed one replaced
Dexcom G7 (10-day and 15-day)
- It's the 12 digits after “21”.
- Side of the sensor box: 4th number up from the bottom.
- Back of the applicator: 2nd number from the bottom.
- In the Dexcom app's settings.
- On a receiver: Menu > Information > Sensor > Session Info.
Dexcom phone hours: 24 hours a day, 7 days a week
Checked Sep 2026 on Dexcom's own website (source). Their process can change, and their site is the final word. Spare isn't affiliated with Dexcom.
FreeStyle Libre 3 Plus
- Libre app: About (shows your last 3 sensors).
- Reader: gear icon > System Status > System Info.
- Bottom of the sensor package, next to “SN”.
- Applicator cap, next to “SN”.
Abbott phone hours: 7 days a week, 8am–8pm ET, except holidays
Checked Sep 2026 on Abbott's own website (source). Their process can change, and their site is the final word. Spare isn't affiliated with Abbott.
Omnipod 5 Pods
- Your controller's serial number.
- The Pod's LOT and sequence numbers.
- The alarm code, if the Pod stopped with an alarm.
- Dates and glucose readings can help.
Insulet phone hours: Option 1, Product Support: 24/7. Option 2, Customer Care: Mon–Fri, 9am–5pm ET
Checked Sep 2026 on Insulet's own website (source). Their process can change, and their site is the final word. Spare isn't affiliated with Insulet.