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.
Two phones, each displaying a different screen from the FreeStyle Libre app.

Use the data on your app to see how
you're progressing over time.

FreeStyle Libre reader and its real time glucose monitoring information.

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 healing.

  • 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.

FreeStyle Libre reader and its ability to show how much time is spent in each glucose range.

Track your progress over time to see how much time you’ve spent in or out of range.

  • Target Glucose Range 

    The more time you spend here, the better your A1c.

  • Above Target Glucose Range

    Shows when your glucose was too high so you can pinpoint what may have caused it to spike.

  • Below Target Glucose Range

    Shows when your glucose was too low so you can pinpoint what may have caused it to dip.

You may not always be within your target range, but knowing what it is can help you better understand how food, activities, and medications can impact your glucose.

FreeStyle Libre reader and a visual showing the direction of change for a glucose reading.

Know where your glucose is headed.

The arrows indicate the direction of your glucose readings, helping you interpret them more easily, and to respond as needed.

View video for full details.

You may also download these helpful guides for more information.  

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 sensor glucose again lagging behind32.

Libre Care logo

Helping you progress is part of the program.

As a member of Libre Care, we will keep you informed about important information designed to enhance your Libre experience.
A woman carrying her daughter on her back, with a FreeStyle Libre sensor on her daughter's upper arm.

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