A blood glucose [meter/monitor] (BGM) is like a photo—it gives you a single snapshot of glucose6 by measuring it directly from your blood with a [fingerprick/fingerstick]5.
But a CGM, like your Libre Duo, is like a movie—showing you an ongoing overview1 of how your glucose changes.
That means it can catch glucose spikes and dips that occur between [fingerpricks/fingersticks]5.
When you first compare numbers from your FreeStyle Libre sensor and your BGM, you might notice small differences. That’s completely normal. Both are accurate, but at slightly different points in time.
Glucose takes a few minutes to move from your bloodstream into your interstitial fluid7, which is where your sensor gets its measurements from.
If you find that your BGM readings differ from your CGM readings, check your readings again.
Rest assured, you can count on a high degree of accuracy from sensor start and over 15 days of sensor wear103.
Quick tip: Notice what happens after a meal.
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