Understanding your FreeStyle Libre 2 Plus systems data

Once you’ve connected your sensor to your smartphone13, 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 LibreLink app13 to see how you're progressing over time.

A phone displaying the FreeStyle Libre app displaying four markers: A, B, C, and D showing different real time glucose monitoring information.

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

  • Current glucose reading

    Measured every minute, and the color lets you 
know if you’re in range300

  • Trend arrow

    Indicates the direction your glucose is heading 
and how quickly it’s rising or falling.

  • Glucose history

    Continuous glucose graph shows how your levels have changed over the last 8 or 12 hours.

  • Add note

    Track food, insulin use, exercise, and other events.

A phone displaying the FreStyle Libre app with three icons labeled A, B, and c showing 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 A1c306.

  • 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 range300, 
but knowing what it is can help you better understand how food, activities, and medications can impact your glucose8.

A phone displaying the FreeStyle LibreLink app showing a screen that explains the glucose trend arrows.

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.

Logo Libre Care

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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