Hello
@Halmoons.
As just said Abbott will replace faulty sensors. You can phone or email them; they have certain hoops you need to jump through but it's pretty straightforward. I gradually got a buffer (reserve) of 3x Libre 2 sensors. After registering a couple of faulty sensors with Abbott I muddled on with those faulty sensors for several days, while waiting for the replacements to arrive. Netvgain = +1. I also, pleasantly but robustly, pointed out to my GP that I needed an early repeat prescription after 2 failures in quick succession. Initially I was told replacements were Abbott's responsibility and a further exchange between myself and the Surgery with my saying "not so - Abbott took 7 working days to replace, the NHS seems to have abrogated any responsibility for overseeing failures (the Patient has to talk with Abbott) and the Surgery can and should provide a repeat prescription in the meantime" brought about 2 more sensors from my local Pharmacy.
I used Libre 2 for about 15 months and had over 50% failures; every one was replaced. At first I thought it was a manufacturing or quality control problem, but I increasingly came to understand that I was actually in a minority and many other users were very happy with their sensors. I concluded that my body was just incompatible with Libre 2. At that time there was no other "lower cost" CGM alternative. But in mid 2022 NICE produced revised CGM Guidelines for both T1s and T2s which introduced alternatives and I was then prescribed the alternative of Dexcom One. This was better - but still not great; I pleaded for help to my Endo who made a business case and I now use the more expensive Dexcom G7, which is funded by the Hospital. G7 is extremely reliable; I mention this to simply confirm that there should be a system that suits anyone.
The sensor failures were one part of the problem, but phone compatibility and latest operating system updates seem to remain a continuing problem. I received a "reader" with my first prescription; although it's rather more basic than a phone app (and does not provide continuous readings, you have to scan for each reading) I found my Reader very dependable.
Finally there are recognised limitations with CGM and for me much more noticeable in Libe 2 than Dexcom One or G7. The link below was compiled by
@helli, derived from forum member's experiences and include those things that neither Abbott nor the NHS will tell you.
Moderator Note: This helpful reply was copied from another thread as it details some of the commonly experienced limitations of continuous glucose sensors. My blood sugar has been in perfect range for days now, but although I haven't changed anything, I'm starting to get very short periods of...
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