What to do

CherryAA said:

I recently purchased a an Abbott freestyle monitoring system. After 15 days it is recording an estimated Hba1C of 40mmols. Yesterday I did a home hba1C test which came out at 41 mmols - so everything seems to be consistent.

MY SD codefree is generally consistently recording higher blood sugars than the Freestyle libre
cmg . I was searching for information about whether the SD codefree does record high and found this post suggesting it is actually calibrated to be higher which was news to me.
Presumably if that is true then any people using the codefree get a pleasant suprise when they get hba1C tests done, assuming they test often enough to end up with a mental average of sorts?

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Bluetit1802 said:

The Codefree is calibrated to convert the reading taken from whole capillary blood to the equivalent venus plasma blood. This is why it may read higher than other meters, but it should be a more accurate assessment of your plasma blood test results (HbA1c etc.) The AccuChek Mobile is similarly calibrated, and from what I understand most meters are, too. Older meters may not be, and possibly the odd brand. I have always used the Codefree and do get a surprise when I have my HbA1c test - a nasty one usually. My meter readings with Codefree and also with the Libre sensor that I wear show my HbA1c should be significantly lower. I am certainly not alone in this. There are other factors to take account of when attempting to estimate an HbA1c and that is whether we are high or low glycators - those of us that are "average" glycators will get the HbA1c they expect. Then there are other factors concerning personal haemoglobin issue to take account of. The HbA1c is not an ideal measurement tool, but it is all doctors have.

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