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Real members of DiabetesTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.

Is My CGM Accurate Enough Compared To Lab Drawn Blood Tests?

A DiabetesTeam Member asked a question 💭
Inverary, ON

Many of us, myself included, seem to be a little tentative in totally relying on what our CGM (Libre or Dexcom being the two most common) are telling us

We seem to always "suspect" they are reading a little high, a little low or really out to lunch sometimes

So just yesterday I got to put my CGM (Libre 2) to the ultimate test - I got to compare what it has been telling me to a lab drawn A1C test (my annual A1C test)

We currently have 3 main options for testing our blood sugar

There is the… read more

July 18, 2023 (edited)
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View reactions
A DiabetesTeam Member

PS - here's a screen shot comparing the two numbers..
Libre said 5.7%, Lab said 5.6%

July 18, 2023 (edited)
A DiabetesTeam Member

Having recently spent almost 2 weeks in hospital while wearing my CHM sensor ( Free Style Libre 2.) i compared the readings to the blood draw readings and they we’re almost identical except for a .2 or .3 difference.

July 18, 2023
A DiabetesTeam Member

You are so right.i have the dexcom 6. didn't know i was the one only who was a skeptic. i did the same thing with my dexcom &
clarity app. Thank you!

July 18, 2023
A DiabetesTeam Member

thanks JenniferWaithe my lantus never has a month to stay in the fridge.😀

July 18, 2023
A DiabetesTeam Member

Sorry, that should have been CGM not CHM!!

July 18, 2023

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