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Type 2 Diabetes
CGM vs finger pricking: too much data?
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<blockquote data-quote="sw600" data-source="post: 2586238" data-attributes="member: 564651"><p>But back to the OP's question, I don't think you can have too much data. If I only had my 3-6 monthly hba1c to look at then I have been between 40-44 for about 6 years depending on how well I apply myself to eating properly (and it's steadily getting more difficult to keep it low I think). But looking at the CGM shows quite large spikes from exercise and eating, with the rest of it relatively low. There seems to be a growing body of evidence to suggest that this variability (big spikes) creates more oxidative stress. So inside your single hba1c number there is a wealth of information about how you could better deal with your condition. I could just say hba1c 41 (which I just got yesterday) is 'normal', and ignore any carb restriction. But I can see that I get readings of 13-14 if I am not careful (moreso from exercise weirdly) which is definitely not 'normal'. If you only do a finger prick test 2 hours after a meal and never see the max values of the actual spike you are still losing information that you could use to your advantage.</p><p></p><p>edited to add: hba1c 41 from the blood test (let's call this the 'actual' value) was kind of halfway between the libre's optimistic "Estimated A1C" value of 38 and the pessimistic GMI value (in their online reporting tool) of 43. So, not sure what to make of either of those estimated numbers. Let's wait 3 months and I'll test again, if I can stomach the £100 per month for the libre sensors.</p></blockquote><p></p>
[QUOTE="sw600, post: 2586238, member: 564651"] But back to the OP's question, I don't think you can have too much data. If I only had my 3-6 monthly hba1c to look at then I have been between 40-44 for about 6 years depending on how well I apply myself to eating properly (and it's steadily getting more difficult to keep it low I think). But looking at the CGM shows quite large spikes from exercise and eating, with the rest of it relatively low. There seems to be a growing body of evidence to suggest that this variability (big spikes) creates more oxidative stress. So inside your single hba1c number there is a wealth of information about how you could better deal with your condition. I could just say hba1c 41 (which I just got yesterday) is 'normal', and ignore any carb restriction. But I can see that I get readings of 13-14 if I am not careful (moreso from exercise weirdly) which is definitely not 'normal'. If you only do a finger prick test 2 hours after a meal and never see the max values of the actual spike you are still losing information that you could use to your advantage. edited to add: hba1c 41 from the blood test (let's call this the 'actual' value) was kind of halfway between the libre's optimistic "Estimated A1C" value of 38 and the pessimistic GMI value (in their online reporting tool) of 43. So, not sure what to make of either of those estimated numbers. Let's wait 3 months and I'll test again, if I can stomach the £100 per month for the libre sensors. [/QUOTE]
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CGM vs finger pricking: too much data?
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