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Libre II Hypo Logging

B

Bazer2000

Member
Messages
6
Location
Nottingham
Type of diabetes
Type 2
Treatment type
Insulin
Hi, I have been having some alarms on my Libre II recently for blood glucose below 3.8 but have found out from calling Abbot that to be recorded as a Hypo (on either my phone app or Libreview) my blood sugar must be below 3.8 for more than 15 minutes.

This concerns me as this definition seems to rather different to that used by DVLA which does not seem to include the 15 minute definition.

It may be that Libre II only records a limited amount of data over the 15 minute period?

I also feel that it censors the information re blood glucose levels that are provided to my diabetes team.

I can accept that for many a blood glucose of 3.8 is not low but as a professional analytical chemist I feel that data collected from our bodies should not be censored to allow us to discuss poor glucose control in an informed manner.

I would appreciate others views on this, which is made worse as I am becoming forgetful in my old age and the app to provide an aid memoir on my diabetes control.

Rant Over Barry
 
I think this is likely to exclude/reduce logging of compression lows, i.e lying on the sensor while asleep which gives an artificially low value.

You diabetes team will likely be able to see the full time history of the sensor, and tbh are more likely to be concerned about total time hypo (and above range) as an indication of where your BG lies in normal life.
 
Bazer2000 said:
This concerns me as this definition seems to rather different to that used by DVLA which does not seem to include the 15 minute definition.
Click to expand...

lows your supposed to check against fingerprick, so dvla does not need to to add that into there definition as your already of ment to of confirmed. dvla clearly state 5 to drive (for starting off). and you'd require if low wait 15 minutes test again until +5.

agree with @SimonP78 would go a little further. the libre sensor lags behind 10-15 minutes. to me it appears to try reduce this delay using some form of prediction to try give more accurate 'realtime' readings somelows could be predicted lows, then after a short time will then adjust to what the reading was actually at. alongside with the compression issue.

you can download the raw data it has either via restapi or export as json to check in another app it doesnt appear to censor.
 
Hi,

Interstitial fluid for me seems to lag behind with sensors. I can be over a hypo but the sensor needs a good 20 minutes to catch up.. (I also think it’s got something to do with how the body prioritises blood glucose replenishment? Protecting the brain first the interstitial layer is the last in line..)

So, on a graph it can look like I was low for a good 40 minutes?
Whilst my meter confirms how I feel. Back in range. (Only seems to happen with lows.)
 
Hi
I was in the doctors surgery not long ago talking to a nurse when my alarm went off.
She was concerned at my lack of concern lol as i was reading 3.2 mmol....

While i was waiting to be seen i had already eaten.

She didn't grasp it until on leaving her insulting room lol i had returned to the 4s.

My point is it works both ways and i often drop into the red on my libre when in actual fact my fp test would have me in the green.
The libre is not an exact science as there are too many variables but its a fantastic guide for me in achieving excellent control.

Have you got the libre link up?
I have as i use to to run my smartwatch to my phone.
Touch the logbook button on the first screen and it gives you a different kind of data than the libre itself?

I wish you well

Tony
 
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