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I do understand that the CGM measures glucose in the interstitial fluid not in blood. I don't understand you question "Have you ever experienced this?" If you mean have I experienced a difference between a finger stick and a simultaneous CGM reading mine are usually within 5 points so that is not a significant difference. I have seen more of a difference when comparing HbA1C lab results to ADA-translated CGM reading. For example my last HbA1C test was 5.1 but the ADA-translated CGM predicted 5.6, higher than the actual lab result. There is nothing to do about the difference other than to be aware of it. I would anticipate that each individual may be slightly different. I hope this is helpful to you.
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@annabelle6dawgs, my question was whether you had experienced discrepancies between a glucometer finger stick and your continuous glucose monitor (CGM) readings. This has happened to me and has been frustrating. It seems to especially occur in the 24 - 48 hours after a sensor change. I learned to be prepared to do more glucometer finger sticks during those times. Your HbA1C and your ADA-translated CGM reading seem pretty good (compared to mine). You must be doing a pretty good job of staying on top of things.