Understanding your FreeStyle Libre systems data

Once you’ve connected your sensor to your reader, you’ll gain insights into what affects your glucose levels. Here’s some handy information that explains what you’ll see. 
FreeStyle Libre 2 readers showing Time in Target and Trend Arrows

Use the data on your reader to see how you’re progressing over time. 

FreeStyle Libre 2 reader showing various different patterns

Monitor trends and patterns from 
your device to see how well you’ve been managing your glucose over time.

  • Glucose trend arrow

    The direction in which glucose is heading.

  • Current glucose reading

    Glucose level from your latest scan.

  • Glucose graph

    Shows how your glucose levels have changed over the last 8 hours.

  • Target range

    Easily identify when you are above or below your target range.

View video for full details.

You may also download these helpful guides for more information.  
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      Why don’t blood glucose and sensor glucose readings match?

      Glucose enters the blood first, which is what finger pricks measure32. Then, it enters the interstitial fluid (ISF) found around cells beneath the skin – this is what sensors measure32. Both are accurate but at slightly different points in time.

      Think of blood glucose as the engine of a train, and the interstitial fluid or sensor glucose as the caboose32.

      Train video showing stable glucose levels
      Stable glucose levels

      When glucose levels are stable, there’s little difference in measurements.

      Ascending train video showing differences on the glucose levels
      Climbing glucose levels

      As glucose levels rise, like they can after a meal, sensor glucose lags behind blood glucose32.

      Descending train videos showing differences on the glucose levels
      Dropping glucose levels

      After medication or exercise, glucose levels may fall with the sensor glucose again lagging behind32.

      My FreeStyle logo

      Diabetes is a
      balancing act.
      We are here to
      support you.

      Join the MyFreeStyle program and get helpful insights on how food and exercise affect glucose levels, advice for tracking your progress, and much more. First time user? You may qualify for a free29 sensor!
      Woman with a FreeStyle Libre sensor on her arm smiling while balancing on a gym ball

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