Here is the part most comparison articles get wrong. The original Libre 3 sensor and the Libre 3 Plus sensor are not simply "old versus new" in the way an iPhone upgrade works. The Libre 3 Plus is approved for a slightly younger age range, starting at 2 years old versus 4 years old for the standard Libre 3, and it stretches wear time from 14 days to 15. For most adults already on Libre 3, the functional difference in daily readings is small. The real decision point is pediatric use and the extra day of wear, not accuracy, since both use the same underlying sensing technology.
Libre 3 Plus Sensor Replacement: When Abbott Actually Covers It
A sensor replacement claim only goes through if you report the failure within the window Abbott specifies, and most people never read that fine print until they need it. If your libre 3 plus sensor replacement request involves a sensor that fell off early, failed to activate, or gave error codes, document the lot number and date of application before calling support. Abbott's replacement program is separate from your pharmacy refill schedule, so a replaced sensor does not use up your next prescription fill. This distinction trips up a surprising number of first-time users searching for a freestyle libre 3 sensor replacement.