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Difference in BG readings using same meter

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C

Cleo

Well-Known Member
Relationship to Diabetes
Type 1
I tested myself last night before bed and I was 5.4. This is exactly the same I was 1 hour after dinner so I thought I'd test again using another finger (using the same meter though). The result was 4.3. Now I know that the glucose meters we have available are not "the best" tools in terms of accuracy, but I was a bit surprised with the difference of 1.1 mmol given that I was using the same meter. I'm currently using the Aviva nano, I have gotten myself a USB contour but will start using that one once I run out of the Aviva testing strips.
Thoughts on discrepancies using the same meter are welcome .
Thanks :confused:
 
I've often had this experience - weird isn't it! I use a Contour meter and tend to test again (using a different finger and lancet) if a reading seems lower or higher than expected. I've had differences of 2 in the past, which is worrying as I have to adjust insulin depending on pre-meal readings. Nothing in diabetes is an exact science! My DN said that readings could vary from minute to minute and not to worry about discrepancies like this. All the best..........
 
Mrs Yorks who works in blood sciences tells me that it takes about an hour for the blood to thoroughly mix in the circulation, to even out as it were. Given that ingested food also doesn't get digested in an instant, you have a process of a steady stream of glucose being added to the blood and the blood circulating this uneven mix. One hour after a meal you will get large difference between fingers. Try the same 3 hours after a meal and they will be closer together. Any variation then will just be the range variation of the meter.
 
yorksman said:
Mrs Yorks who works in blood sciences tells me that it takes about an hour for the blood to thoroughly mix in the circulation, to even out as it were. Given that ingested food also doesn't get digested in an instant, you have a process of a steady stream of glucose being added to the blood and the blood circulating this uneven mix. One hour after a meal you will get large difference between fingers. Try the same 3 hours after a meal and they will be closer together. Any variation then will just be the range variation of the meter.
Click to expand...

That's interesting to know yorksman, thank you 🙂
 
I've had this recently cleo & I don't get why it's happening as its been 1.2 - 1.5 difference.

Part of me put it down to being hormonal tho
 
many thanks all !
good to know that others have had similar experiences - I guess its just 'one of those things'...🙂
 
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