I've been gradually increasing the low alarm on my Libre2 from 3.8 initially to 4.3 a few days ago. This better accounts for the delay in converting my hypo-fix food to a response from my L2. I use the Android phone app and can change the alarm trigger at any time. I also have a reader and will frequently cross-check the L2 with a finger prick test and record the BGL in my app's log against the L2 reading. Its been a useful tool to learn about the time taken for various hypo-fixes to be effective.
When I spoke to Abbott recently, I was told to take the L2 reading about 5 min following the BGL test (not 10 min).
I think there is a weakness with the alarm: once the alarm is cancelled by taking an L2 reading, the alarm will not sound again if the readings remain below the alarm trigger. The L2 alarm won't be functional again until the level rises above the trigger level. This can be important during sleep time.
Instead of the arrows (which lack resolution), I would prefer an expanded or auto-ranging vertical scale so that I can make my own judgement about the rate of change. Its a pity that we can't use the functions of the phone to expand the size of the graph "image".
But the L2 is a great help and I really appreciate it.
I would like the flexibility to also use the reader for the L2, but once a sensor is initiated with the reader, the alarms will only sound from the reader.
------------------------------
Jock
------------------------------
Original Message:
Sent: 16-10-2022 10:50
From: Carey
Subject: CGM low alarm
Hello Michael. Like David mine is also set at 4.5. What frustrates me is the gap that can exist between statial blood sugar readings from the sensor and my BGM readings. So my response is usually to do a blood test at the alert and if confirmed or lower take some jelly beans. However if higher I do nothing and simply monitor the situation. Arrows generally mean change is happening faster and if necessary I take 5-7 jelly beans and wait 20 minutes before another test to resume whatever it is that I have been doing. Hope that is helpful.
Cheers Carey
------------------------------
Carey
Original Message:
Sent: 14-10-2022 16:20
From: Michael
Subject: CGM low alarm
I was just wondering at what number do forum members set their CGM low level alarm. I had mine set at 3.8 by my diabetic educator however was feeling it might be better to catch the low around 4.5. Any suggestions.
------------------------------
Michael
------------------------------