# Libre drops out during critical moments
**URL:** https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417
**Category:** Type 1 & LADA
**Tags:** cgm
**Created:** [December 15, 2022, 2:12am UTC](https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417 "2022-12-15T02:12:32Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mike\_g](https://forum.fudiabetes.org/u/mike_g)
#### Post date: [December 15, 2022, 2:12am UTC](https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417/1 "2022-12-15T02:12:32Z")
For some reason, the libre 2 sensor seems to go offline at critical times for me, especially this current sensor. Just now, ate dinner, and spiked to 254 at 7:34 PM. This caused me to jump on the treadmill, which kicked the insulin into gear… But the libre2 chose to go offline. I did an NFC scan at maybe 7:45, which confirmed it wasn’t responding.
I tested my BG at 7:55, which revealed it was 82, so I reached for the sugar. The CGM came back online at 8:05, reading 57 BG, and alarmed.
Why the heck does it do that? That’s really annoying. Anyone else have those issues?
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### Author:  [@RogerType1](https://forum.fudiabetes.org/u/RogerType1)
#### Post date: [December 15, 2022, 3:40pm UTC](https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417/2 "2022-12-15T15:40:05Z")
probably a slight placement issue or a blood issue and sounds like a replacement will be your only option…they will usually replace it without too much hassle…i had to send one of them back out of maybe 6 replaced sensors over the 2 or 3 years i used them…with my sensors it usually had to do with placement
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### Author:  [@mike\_g](https://forum.fudiabetes.org/u/mike_g)
#### Post date: [December 15, 2022, 3:49pm UTC](https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417/3 "2022-12-15T15:49:27Z")
They do seem to be sensitive to placement, so I use my tricep area, usually with good success. This sensor has been good otherwise, apart from a few gaps like this. It’s got 3 days left, so I’ll just let it ride.
Hope the libre 3 performs better, I’m using that in about a month.
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### Author:  [@Strat1117](https://forum.fudiabetes.org/u/Strat1117)
#### Post date: [December 25, 2022, 7:57pm UTC](https://forum.fudiabetes.org/t/libre-drops-out-during-critical-moments/13417/4 "2022-12-25T19:57:49Z")
Personally, I have had much better luck with the Libre3 (about 2 months experience with it), and you don’t need to scan it - it reads constantly via Bluetooth as long as you aren’t out of range. Libre2 was a bad fit for me, I had all kinds of problems with it, including doa, and needed multiple replacements.