Abbott FreeStyle Libre 2 - Different and Accurate

BG = Blood Glucose
SG = Sensor Glucose
SG BG
88 91
SG
116
Meals
BG
160
Pg 26 of 32
Why are glucose readings dierent?
Rather than taking glucose readings from your blood, CGM sensor
readings are taken from interstitial fluid, a thin layer of fluid that
surrounds the tissue cells below your skin. As carbohydrates
are digested, glucose enters your bloodstream before they are
absorbed into the interstitial fluid.
Think of glucose readings as the cars of a train where the front
of the train is blood glucose and the back of the train is sensor
glucose.
Dierent and Accurate
When the train is traveling on a flat track, where there is little
fluctuation between glucose levels, blood glucose and sensor
glucose are similar.