Have every compared your finger stick glucose to your CGM glucose only to find s significant difference between the two values? So why? A physiologic time lag of glucose transport from the vascular to the interstitial space. Therefore, interstitial glucose readings (aka CGM readings) tend to lag finger stick glucose values by 5 – 10 minutes. It is even longer if glucose readings are changing rapidly. To learn more, click the link below to watch a short video.
Journal article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495531/
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