Fed up with Libre2 sensing

[1974darrench]

I have been on the Libre2 sensor system for over a year after previously being on the Libre 1.

These sensors seem extremely unreliable and temperamental. Have you heard this before?

I've attached a some of screenshots showing when they stop communicating with me and then later on fail completely. My phone is always with me and sits next to my bed at arm level. Last night my sensor failed while I was asleep at 3.15am. I then had a hypo at 5.30am but managed to recover after an awful hypo. My sensor then started working again at 6.10am. Now at 16.05, I scanned my sensor and it has ended and asked me to apply a new sensor. This sensor is only 4 days old. I have now just applied a new one but if this manages to run for the whole 14 days, it will be too early for me to order my next one.

This happens on regular occasions, maybe once every 2 month's. Then on random occasions the sensor automatically scans as it should but does not alert me during low or high glucose events. I emailed the manafacturers but they never got back to me.

I'm really not happy. When they work they are great but every so often they fail for no good reason.

 

[Hopeful34]

Hi @1974darrench

Welcome to the forum. If the sensor doesn't work for 14 days, if you ring Abbott and explain the issue they're very good at replacing the sensor. Ringing is much better than emailing them.

How often are you scanning the sensor? Just wondered if any of the gaps were because it was more than 8 hours since you last scanned it.

 

[barrym]

Just for clarification, there is NO continual communication between sensor and phone for the line you see on the phone. This is all captured with the scan.

The only comms are the alarms. This is a largely wasted send from the sensor every minute of current BG. If it triggers an alarm you hear it, if not it's discarded.

Gaps like the ones you show are due to the sensor NOT recording a reading.

I have had thos very occasionally over the 4-5 years I have been using them, but I'm not totally clear of the cause. It has never seemed to me to be a terminal problem for the sensor, that is it might happen on day 1 then continue perfectly.

I have no doubt that it will be replaced if you call. Tiresome I know, but we have to keep Abbott aware of problems for all our benefit.

HTH

 

[Colliewobbles]

i recently has the same problem rang up abbot and they replaced..

 

[Ken P]

I used the Libre 1 for about a year and the Libre 2 for a year and a half before going to Medtronic sensors when I got the 770 pump. I'm not sure why you would be having this many gaps, I had them once in a great while but certainly not regularly.

Here in Canada Abbott has always been good at replacing defective sensors or sensors lost to to adhesive failure.

 

[EBe66]

I am on the Libre 2 (self funded) for about 1.5 years now and was just about to ask something similar on this forum. I do not have what you are seeing. But the last 8 sensors have been terrible Of those 8 only 2 made it to the end of the 14 days. One of those was a replacement from Abbott.
So most have ended to soon for me. But worse, in my opinion, they develop a steadily greater degree of measurement error before failing.
Last week I had an operation and the sensor was spot on with the hospitals finger prick sensor. But when I came home I noticed I was having pretty good day curves which by now make me cautious of the sensor. I don't normally check with a finger prick, that's why I buy the sensor right? But when I checked there was a 1.7 difference. Still plausible with all error margins etc. A day later the difference was 2.5 and this morning the sensor said 3.4 and two finger prick meters said 9.0 and 9.3. That's really bad. At least it was only a few hours short of the 14 days but I was thinking I was doing really well and it fouls up the apps and the websites statistics...
In the beginning I thought the heat might be a factor but that can hardly be the case the last two weeks.
Anybody else seeing similar behavior??

 

[Deleted member 527103]

I  always check my sensors with finger pricks at least once (usually twice) a day for the reasons you mention. Usually, it is fine but it means I have confidence in the sensor for the rest of the day and, if it is not, I can take appropriate actions.

I find first thing in the morning is good for me because I am usually in range and stable. There is no point checking when I am low or high because it is well known that CGMs are calibrated to be most accurate at normal levels. And the 15 minute delay with ISR means a stable baseline reduces this affect.

 

[1974darrench]

Maybe there is a bad batch of sensors out there.