Discrepancy between Dexcom G7 and Contour Blood Glucose Test readings
I am writing to note a recent variance between my Dexcom G7 Continuous Glucose Monitor (CGM) and my Contour blood glucose meter.
Earlier today, my Dexcom G7 app indicated a reading of 240 mg/dL. Because this felt high, I immediately performed a finger-stick test using my Contour meter, which read 190 mg/dL. To ensure accuracy, I retested immediately with the Contour meter, and it confirmed a second reading of 190 mg/dL.
There is a consistent 50 mg/dL variance between the interstitial fluid reading (CGM) and the capillary blood reading (finger-stick). Given this gap, I wanted to confirm which reading I should rely on for my current treatment decisions. Anyone have answers to fix this issue? Or any suggestions?
u/itskkrn — 13 hours ago