Cgm

[marlyn7]

Am using cgm monitor, set at 4-10,what do most people set theirs at ?

 

[Lucyr]

Standard range to set it to is 3.9-10

 

[John Gray]

As Lucy says, just use the standard settings - but be aware that the figures you're setting for the CGM (glucose in the interstitial fluids) are unlikely to match those from finger-pricks (blood glucose).
For example, I am quite happy to add 1 to 2 mmol/L to my CGM figures to approximate to finger-prick results. One just gets used to the numbers in one's particular case.
The CGM figures also tend to lag behind the figure-prick results by "a length of time", variable but usually quoted as "15 minutes". This is relevant if your blood glucose figures are increasing (or perhaps decreasing) rapidly.
"Your Mileage May Vary", as the old pre-metric saying goes...

But you undoubtedly know all this already.

 

[Proud to be erratic]

4 to 10 is more than accurate enough. 3.9 is the same thing as 4, within the realtime accuracy of both CGM and finger prick testing with a Glucometer.

Do not get hung up on a decimal point. None of the instrumentation available to us is that accurate. It can become very misleading and potentially stressful, trying to manage your diabetes to within a decimal point. I am tempted to say its downright stupid: the manufacturers are blatantly misleading us and the Health Care Professionals (HCPs) ought to know better.

 

[marlyn7]

As Lucy says, just use the standard settings - but be aware that the figures you're setting for the CGM (glucose in the interstitial fluids) are unlikely to match those from finger-pricks (blood glucose).
For example, I am quite happy to add 1 to 2 mmol/L to my CGM figures to approximate to finger-prick results. One just gets used to the numbers in one's particular case.
The CGM figures also tend to lag behind the figure-prick results by "a length of time", variable but usually quoted as "15 minutes". This is relevant if your blood glucose figures are increasing (or perhaps decreasing) rapidly.
"Your Mileage May Vary", as the old pre-metric saying goes...

But you undoubtedly know all this already.

OK thanks

 

[helli]

My CGM is set at 4.0 to 10.0.
The reason for this is for me, with Type 1, it is the standard for tracking Time in Range (TIR) whereby anything over 70% is considered good.
I do not use this range for alerts. I alert earlier to avoid hypos and do not bother with the upper limit alert as I have good high level awareness and tend to only "poke my head" into double figures occasionally,

Regardless what others set their target range at, you need to know why you are setting it and what you do with the data?
Are you using it for alerts that you can respond to? Are you using it as a tracker to show improvements in TIR over time?

 

[everydayupsanddowns]

I used to set mine as 4-9 because that was the recommended fingerstick range

4-7 before meals and no higher than 9 by 2hrs after eating.

But as others have said, the International Consensus on Time In Range used 4-10 as their suggestion, so most people stick with that.

 

[Lucyr]

My CGM is set at 4.0 to 10.0.
The reason for this is for me, with Type 1, it is the standard for tracking Time in Range (TIR) whereby anything over 70% is considered good.

The standard is based on 3.9-10. Though I agree 4 is close enough to 3.9

 

[Martin.A]

Do not get hung up on a decimal point. None of the instrumentation available to us is that accurate. It can become very misleading and potentially stressful, trying to manage your diabetes to within a decimal point. I am tempted to say its downright stupid: the manufacturers are blatantly misleading us and the Health Care Professionals (HCPs) ought to know better.

The decimal point is important with some instrumentation though, eg if you're testing for ketones.

 

[Lisa65]

I leave mine on the default setting. I'd prefer not to get over 10, but unfortunately it happens sometimes.

 

[Proud to be erratic]

The decimal point is important with some instrumentation though, eg if you're testing for ketones.

I rarely need to check for ketones and haven't done so for 5 years. But the NHS Guidance is:

"Checking your blood glucose and ketones​

If you have diabetes and have any of the symptoms of DKA, check your blood glucose. If it's high, test for ketones if you can.

If you use a meter to test for ketones in your blood:

under 0.6mmol/L is normal​

0.6 to 1.5mmol/L is slightly high – test again in 2 hours​

1.6 to 3mmol/L means you're at risk of DKA and should speak to your diabetes care team for advice​

over 3mmol/L is high and means you may have DKA and should call 999 or go to A&E​

If you use strips to test for ketones in your pee, over 2+ is high. This means you may have DKA and should call 999 or go to A&E."​

​

I don't know what the manufacturer's permitted tolerance is for ketone strips and meters, but suspect one could reasonably round off 0.6 to about a half and thereafter decimal points are superfluous. It's important that we were taught maths and how to do any calculations with due accuracy. Looking at my 12 yr old grandson's terrific (lucky) inherent numeracy (inherent from his mum and grandad!) is rewarding to myself and my daughter, but no-one at his school seems to be guiding him into understanding the relevance for when numerical accuracy is essential and when it's superfluous or out of context; at age 12 that's fine.

However I stand by my opinion that we should not get hung up on a decimal point when it comes to measuring blood glucose or ketones.

 

[Martin.A]

However I stand by my opinion that we should not get hung up on a decimal point when it comes to measuring blood glucose

I agree, and I don't, and it's good advice for those newly diagnosed. What I look at these days is how my BG is trending. My mtd average is 5.6 based on the actual results, 5.7 if rounded, so it's effectively 6 either way. However, there's no way I'm rounding a prized HS (5.2) and reporting it as a 5 😉