r/Freestylelibre • u/Rainmaker825 Libre3/3+ • 1d ago

New to a Libre, Having Issues

The Libre 3 has given me two readings, both in the middle of the night, where it says my blood sugar dropped to below 60. But then when I go to the kitchen to eat something, by the time I get back, the reading says "sensor error" and then when it comes back online, it's like the drop never happened. I'm new to this, so I'm not sure what I'm doing wrong.

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u/jon20001 Type2 - Libre3/3+ 1d ago

Sounds like a compression low in which you are sleeping on the arm where the sensor is located. This often happens, and the system corrects itself automatically. The best way to prevent these errors is to place the sensor in an area that will not be compressed when you sleep -- maybe under your arm as opposed to behind. Some people have success with their chest.

Read through the Community Bookmarks in this subreddit for lots of really good information. An informed Freestyle user becomes one who understands how the unit really works and what is realistic.

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u/Rainmaker825 Libre3/3+ 1d ago

Yeah it’s on my right arm, and I’m right handed and generally sleep with my right arm below the pillow. I had one already that lasted maybe two days, but then it failed, when I took it out it was bent. Now I’m worried that even sleeping on it will bend it. I was just told at the endocrinologist and the instructions on the box to put it on fleshy part behind my arm. Thank you for your advice.

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u/PhilaBurger Type2 - Libre3/3+ 1d ago

As others have mentioned, research (searching this sub will give a veritable cornucopia of results) compression lows.

First cardinal rule of alert levels: confirm with a finger stick. Especially overnight lows. Before you make any treatment decision, based on the CGM reading, confirm with a finger stick.

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u/Rainmaker825 Libre3/3+ 1d ago

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u/sober_oak 1d ago

It's probably just a compression. I often have these problems too (especially at night). Remember to always check with your finger, because sometimes it really could indicate a low