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How closely did your CGM predicted HbA1c match your actual test result?

Rosie9876

Well-Known Member
Messages
294
Type of diabetes
Type 2
Treatment type
Tablets (oral)
How closely did your CGM predicted HbA1c match your actual test result? My prediction on Libre 2+ was 50 mmol/mol. My actual test result was 52 mmol/mol. I'd say that's remarkably accurate, better than it used to be in my experience.
 
I had my first HbA1c recently that covered 90 days of Dexcom ONE + usage. My HbA1c was 37 whilst the Dexcom GMI (glucose management indicator) was 5.4% which equals 36 so very close.
 
On LibreLink, my Libres have consistently predicted 8 mmol/mol lower than my labwork for 9 years now, nicely corresponding with the sensors usually reading lower than a fingerprick by 0.8 - 1.8 mmol/l for me.
Strangely, on LibreView the difference between prediction and labwork tends to be 1 or 2 mmol/mol, based on the exact same data from the same device.
 
My Dexcom 6 results always match up with my blood test results. They were never as accurate with the Libre, but as that was two year ago perhaps Abbott have caught up? Either way, when they are pretty close there is a lot to celebrate
 
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