Understanding your FreeStyle Libre systems data

Once you’ve connected your sensor to your smartphone13, you’ll gain insights17 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 FreeStyle Libre systems app13 to see how you’re progressing over time. 

A phone displaying the FreeStyle Libre app 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 time30.

  • Current glucose reading

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

  • 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 hours.

  • Add note

    Track food, exercise, medication and other events.

A phone displaying the FreeStyle Libre app 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.

A phone displaying the FreeStyle Libre app 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.

An illustration of  a train. The front of the train which is blue and labeled as Blood Glucose. The caboose of the train is yellow and labeled as Sensor Glucose on stable ground.
Stable glucose levels

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

An illustration of a train. The front of the train which is blue and labeled as Blood Glucose. The caboose of the train is yellow and labeled as Sensor Glucose as it heads uphill, illustrating the trailing relationship that Sensor Glucose has with Blood Glucose.
Climbing glucose levels

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

An illustration of a train. The front of the train which is blue and labeled as Blood Glucose. The caboose of the train is yellow and labeled as Sensor Glucose which is  heading downhill, illustrating the trailing relationship that Sensor Glucose has with Blood Glucose.
Dropping glucose levels

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

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The FreeStyle Libre 2 flash glucose monitoring system is indicated for measuring interstitial fluid glucose levels in people aged 4 years and older with diabetes mellitus. Always read and follow the label/insert.

ADC-97480 v1.0
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