Why Continuous Glucose Monitoring (CGM)?

CGM systems continuously measure interstitial fluid glucose levels throughout the day and record this info in the reading device.

Our minute to minute glucose monitoring systems, FreeStyle Libre 2 and FreeStyle Libre 3, use small, discreet and easy to use¹ sensors. They provide your patients with real-time glucose readings on their smartphones^◊,◊◊day and night.

CGM vs. Blood Glucose Monitoring

CGM offers various benefits for your patients over Blood Glucose Monitoring

Requires finger pricks
Requires manual testing multiple times a day
Requires you to carry strips, lancet and meter to test
Provides glucose levels at a single moment of time

Painless², without finger pricks^†
Automatically measures and updates glucose levels every minute
Sensor delivers readings directly to your patients smartphone^{◊,◊◊,ǁ}
Provides the whole picture about both the current glucose level and changes over time^φ
Continuous glucose levels help to see the impact of activities and food
Proven to reduce time in hypoglycaemia^2,4 and improve overall glucose control^3,4

How does the FreeStyle Libre Portfolio work to provide continuous glucose monitoring?

FreeStyle Libre continuous glucose monitoring technology allows people with diabetes to see their glucose levels in real-time.

1. Patients wear the sensor

FreeStyle Libre sensors* are small, unobtrusive, and easily applied¹ to the back of the upper arm. The sensors come with an applicator and use a small, flexible tip that is inserted just under the skin.

2. Sensor measures glucose levels

The sensor continuously measures glucose readings through the whole wear period.

3. Patients view glucose readings on their smartphone

Patients who start their sensor using the FreeStyle LibreLink^◊ or FreeStyle Libre 3 app^◊◊ can see their glucose levels in real-time and receive optional alarms if they are too high or too low.^¤

Interstitial fluid vs. blood glucose readings

Why don’t interstitial fluid readings and blood glucose readings always match?

Glucose in the blood takes time to make its way into the interstitial fluid so there may be a lag time between the readings.

When glucose levels are stable, the two readings may be very similar. However, if glucose is rising or falling, then they might be different.

When blood glucose levels are stable,
the glucose reading captured by the FreeStyle Libre sensors* in the interstitial fluid, are similar to blood glucose reading.

When blood glucose levels increase,
the glucose reading captured by the FreeStyle Libre sensors* in the interstitial fluid may be below the blood glucose reading.

When blood glucose levels decrease,
the glucose reading captured by the FreeStyle Libre sensors* in the interstitial fluid may be higher than the blood glucose reading.

Watch the video to find out more about the difference between testing interstitial fluid vs. blood glucose:

Accuracy, quality & reliability

How accurate is continuous glucose monitoring?

FreeStyle Libre 2 System

The FreeStyle Libre 2 system is now even better with outstanding 15-day accuracy¹

8.2% Overall MARD¹
98.9% within / ±1.1mmol/L for adults¹

Percentage of readings within ± 1.1 mmol/L of YSI values for glucose levels < 3.9 mmol/L and ± 20% when ≥ 3.9 mmol/L.
99.9% in Zones A and B of Consensus Error Grid¹

FreeStyle Libre 2 Plus sensor consensus Error Grid

FreeStyle Libre 3 System

The only CGM with sub-8% overall MARD^1-5

The FreeStyle Libre 3 system is accurate,^1-5 stable and consistent over 14 days – no finger pricks,^† no user calibration, no code entry.

7.8% Overall MARD⁵
93.4% Within ± 1.1 mmol/L⁵

Percentage of readings within ± 1.1 mmol/L of YSI values for glucose levels < 3.9 mmol/L and ± 20% when ≥ 3.9 mmol/L.
99.9% in Zones A and B of Consensus Error Grid¹

Uncompromising quality

The FreeStyle Libre minute-to-minute glucose monitoring systems* offer uncompromising quality and reliability for you and your patients.

State-of-the-art manufacturing

with quality ensured through rigorous testing and precise factory-calibration

Smart quality checks

so your patients can rely on every reading. Every sensor conducts over 20,000 self-checks during its wear period.

Proven performance

with documented highest levels of safety and accuracy.¹

Trusted data security

to ensure adherence to local privacy and cybersecurity standards to provide safeguarding of all personal health data.

Commitment to customer care

with a specialist team available to help with simple or complex questions, as well as quick and free of charge sensor replacements for patients.

No finger prick calibration, ever

Calibration is needed for commercially available CGM systems because the sensitivity of each sensor can vary within each batch that is made. The FreeStyle Libre sensors* are calibrated at the factory – so your patients won’t need to calibrate it using a finger prick, ever. This means you and your patients can be confident in the accuracy of the system, and that the accuracy you're receiving is what is reported, without being affected by discrepancies caused by finger prick calibration.

Discover the FreeStyle Libre Portfolio

The #1 sensor-based glucose monitoring systems used worldwide⁶

The FreeStyle Libre 2 System

Minute-to-minute glucose readings sent to your patient's smartphone^◊,II to help them manage their diabetes more confidently⁷

Discover FreeStyle Libre 2

The FreeStyle Libre 3 System

Your patients know sooner can act faster and be ready to avoid hypos with our next-gen continuous glucose monitoring

Discover FreeStyle Libre 3

Digital Health Solutions

Discover how you can get the most out of the FreeStyle Libre Portfolio with our Digital Health Solutions for both you and your patients

Discover Digital Health

References & Disclaimers

Images are for illustrative purposes only. Not real patient or data.

† Finger pricks are required if glucose readings and alarms do not match symptoms or expectations.

◊ The FreeStyle LibreLink app is only compatible with certain mobile devices and operating systems. Please check the website for more information about device compatibility before using the app. Sharing of glucose data requires registration with LibreView. FreeStyle LibreLink works with FreeStyle Libre 2 Plus sensor.

◊◊ The FreeStyle Libre 3 app is only compatible with certain mobile devices and operating systems. Please check our website for more information about device compatibility before using the app. Sharing of glucose data requires registration with LibreView. FreeStyle Libre 3 app works with FreeStyle Libre 3 sensor.

ǁ Glucose readings are automatically displayed in the FreeStyle LibreLink app only when your patients' smartphones and sensors are connected and in range.

φ For FreeStyle LibreLink and FreeStyle Libre 2 reader users only, users need to scan once every 8 hours for a complete glycaemic picture and during signal loss.

¤ Alarms notifications will only be received when alarms are turned on and the Freestyle Libre 2 or FreeStyle Libre 2 Plus sensor is within 20ft unobstructed of the reading device. Users must have override do not disturb settings enabled to receive alarms and alerts on the smartphone. For FreeStyle Libre 3 sensor users the notifications will only be received when alarms are turned on and the sensor is within 33 feet unobstructed of the reading device.

* FreeStyle Libre sensors refers to the FreeStyle Libre 2, FreeStyle Libre 2 Plus and FreeStyle Libre 3 sensors. FreeStyle Libre systems refers to the FreeStyle Libre 2 and FreeStyle Libre 3 systems.

1. Data on file, Abbott Diabetes Care, Inc.

2. Haak, T. Diabetes Ther (2017): https://doi.org/10.1007/s13300-016-0223-6.

3. Yaron, M. Diabetes Care (2019): https://doi.org/10.2337/dc18-0166.

4. Leelarathna, L. N Engl J Med. (2022): DOI: 10.1056/NEJMoa2205650.

5. FreeStyle Libre 3 User Manual. FreeStyle Libre 3 demonstrates 7.8% overall MARD with 7.5% adult MARD and 8.6% paediatric MARD (age 6-17) in accuracy to YSI.

6. Data on file, Abbott Diabetes Care, Inc. Based on the number of users worldwide for the FreeStyle Libre portfolio compared to the number of users for other leading personal use sensor-based glucose monitoring systems.

7. Fokkert, M. BMJ Open Diab Res Care (2019): https://doi.org/10.1136/bmjdrc-2019-000809.

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Registered Number: 329102 England. Registered Office: Abbott House, Vanwall Business Park, Vanwall Road, Maidenhead, Berkshire, SL6 4XE

Why Continuous Glucose Monitoring (CGM)?

CGM systems continuously measure interstitial fluid glucose levels throughout the day and record this info in the reading device.

CGM vs. Blood Glucose Monitoring

CGM offers various benefits for your patients over Blood Glucose Monitoring

Blood Glucose Monitoring

FreeStyle Libre Portfolio

How does the FreeStyle Libre Portfolio work to provide continuous glucose monitoring?

FreeStyle Libre continuous glucose monitoring technology allows people with diabetes to see their glucose levels in real-time.

1. Patients wear the sensor

2. Sensor measures glucose levels

3. Patients view glucose readings on their smartphone

Interstitial fluid vs. blood glucose readings

Why don’t interstitial fluid readings and blood glucose readings always match?

Watch the video to find out more about the difference between testing interstitial fluid vs. blood glucose:

Accuracy, quality & reliability

How accurate is continuous glucose monitoring?

FreeStyle Libre 2 System

The FreeStyle Libre 2 system is now even better with outstanding 15-day accuracy1

FreeStyle Libre 3 System

The only CGM with sub-8% overall MARD1-5

93.4% Within ± 1.1 mmol/L5

99.9% in Zones A and B of Consensus Error Grid1

Uncompromising quality

State-of-the-art manufacturing

Smart quality checks

Proven performance

Trusted data security

Commitment to customer care

No finger prick calibration, ever

Discover the FreeStyle Libre Portfolio

The #1 sensor-based glucose monitoring systems used worldwide6

The FreeStyle Libre 2 System

The FreeStyle Libre 3 System

Digital Health Solutions

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Blood Glucose
Monitoring

The FreeStyle Libre 2 system is now even better with outstanding 15-day accuracy¹

The only CGM with sub-8% overall MARD^1-5

93.4% Within ± 1.1 mmol/L⁵

99.9% in Zones A and B of Consensus Error Grid¹

The #1 sensor-based glucose monitoring systems used worldwide⁶