What is continuous glucose monitoring? (CGM)

Unlike with traditional blood glucose monitoring (BGM), CGM systems are small sensor-based systems that provide real-time glucose readings day and night, without fingersticks.*†1

 

On this page, we’ll dive into how CGM works, the benefits it provides, and a bit about the #1 CGM brand worldwide.‡2

1. Apply the sensor

CGM sensors are small, unobtrusive, and easily applied to the back of the upper arm.§3
The sensors come with an applicator and use a small, flexible tip that is inserted just under the skin.1

2. Sensor collects data

The sensor measures and stores glucose readings when worn on your body.1

3. Scan the sensor using your smartphoneII¶

 Scan your sensor using a smartphone appII¶ to get glucose readings and alarms.#

Benefits of CGM

With CGM, you can get real-time glucose readings1 and feedback on glucose levels and trends to make informed diabetes management decisions.

  • Experience painless§3 sensor application

  • Check your glucose with a painless§3 scan instead
    of fingersticks*

  • Uncover hidden glucose patterns for a complete picture§4

  • CGM may benefit young patients with hypoglycemic
    unawareness5

Watch to learn more about the difference
between CGM vs. BGM

FDA-cleared for ages 4 & up

A CGM system FDA-cleared for adults and children with diabetes, ages 4 years and above

Real-time glucose alarms#

 Get real-time glucose alarms# with readings every minute1 that notify you if you go too low or too high

14-day accuracy

Superior accuracy on Day 1 compared to the other iCGM sensor,**6 with unsurpassed 14 day accuracy1 for adults and children††

 

Scan and go with the appII

With the FreeStyle Libre 2 appII you can scan, monitor and share your glucose levels‡‡

The more affordable CGM§§2 system

The FreeStyle Libre 2 system is priced 70% below the list price of other CGM systemsIIII2
Learn more

Image of pen and calculator

Ready to get started with a FREE¶¶ trial?

Sign up for the MyFreeStyle program to try one of the FreeStyle Libre systems (CGM) —at no cost.¶¶
Let's go

 

Woman with CGM sensor

Medicare coverage is available for the FreeStyle Libre 2 system if the FreeStyle Libre 2 reader is used to review glucose data on some days every month. Medicare and other third party payor criteria apply.

Abbott provides this information as a courtesy, it is subject to change and interpretation. The customer is ultimately responsible for determining the appropriate codes, coverage, and payment policies for individual patients. Abbott does not guarantee third party coverage or payment for our products or reimburse customers for claims that are denied by third party payors.

* FreeStyle Libre 2 system: Fingersticks are required if your glucose alarms and readings do not match symptoms or when you see Check Blood Glucose symbol during the first 12 hours.

† FreeStyle Libre 14 day system: Fingersticks are required for treatment decisions when you see Check Blood Glucose symbol, when symptoms do not match system readings, when you suspect readings may be inaccurate, or when you experience symptoms that may be due to high or low blood glucose. 

‡ Data based on the number of users worldwide for FreeStyle Libre family of personal CGMs compared to the number of users for other leading personal CGM brands and based on CGM sales dollars compared to other leading personal CGM brands.

§ Data from this study was collected with the outside US version of the FreeStyle Libre 14 day system. FreeStyle Libre 2 has the same features as FreeStyle Libre 14 day system with optional real-time glucose alarms. Therefore, the study data is applicable to both products.

II The FreeStyle Libre 2 app is only compatible with certain mobile devices and operating systems. Please check our compatibility guide  for more information about device compatibility before using the app. Use of the FreeStyle Libre 2 app requires registration with LibreView.

¶ The FreeStyle LibreLink app is only compatible with certain mobile devices and operating systems. Please check our compatibility guide for more information about device compatibility before using the app. Use of the FreeStyle LibreLink app requires registration with LibreView.

# Notifications will only be received when alarms are turned on and the sensor is within 20 feet unobstructed of the reading device. You must enable the appropriate settings on your smartphone to receive alarms and alerts, see the FreeStyle Libre 2 User’s Manual for more information.

** Based on a comparison to Dexcom G6.

†† FreeStyle Libre 2 system is indicated for use in people with diabetes age 4 and older.

‡‡ The user's device must have internet connectivity for glucose data to automatically upload to LibreView and to transfer to connected LibreLinkUp app users.

§§ Based on a comparison of list prices of the FreeStyle Libre 2 system versus competitors’ CGM systems. The actual cost to patients may or may not be lower than other CGM systems, depending on the amount covered by insurance, if any.

IIII Based on a comparison of list prices of the FreeStyle Libre 2 system versus competitors’ CGM systems, assuming annual use of one receiver (or equivalent hardware) and quantity of transmitters and/or sensors according to use life.

¶¶ or ♢ Eligible patients will receive one (1) FreeStyle Libre 2 sensor for users with a compatible mobile phone operating system at $0 copay. The expiration date of the voucher is 60 days from the issue date. This program is available for patients with Type 1 and Type 2 diabetes; it is not available for patients with gestational diabetes. Only patients ages 18 and older are eligible to sign up and receive an offer for the FreeStyle Libre 2 sensor and patients ages 4-17 are eligible to receive an offer for the FreeStyle Libre 2 sensor through their parent or guardian. This offer is void where prohibited by law. Abbott may modify or rescind this offer at any time without notice. The discounts are not available to beneficiaries of Medicare, Medicaid or other federal or state healthcare programs or residents of Massachusetts, Puerto Rico and other US territories. The free FreeStyle Libre 2 sensor is provided as a sample and is limited to one NDC per eligible person. The FreeStyle Libre 2 sensor cannot be re-sold, traded nor submitted to any third-party payer for reimbursement and is not provided as any inducement for future purchases. The free sample card is not health insurance.

References: 1. FreeStyle Libre 2 User's Manual. 2.Data on File. Abbott Diabetes Care. 3. Haak, Thomas, et al. “Flash Glucose-Sensing Technology as a Replacement for Blood Glucose Monitoring for the Management of Insulin-treated Type 2 Diabetes: a Multicentre, Open-label Randomised Controlled Trial.” Diabetes Therapy 8, no. 1 (February 2017): 55-73. https://doi.org/10.1007/s13300-016-0223-6. 4. Unger, Jeff, Pamela Kushner, and John E. Anderson. "Practical guidance for using the FreeStyle Libre flash continuous glucose monitoring in primary care." Postgraduate Medicine 132, no. 4 (March 2020): 305-313. https://doi.org/10.1080/00325481.2020.1744393. 5. DiMeglio, Linda A, et al. “ISPAD Clinical Practice Consensus Guidelines 2018: Glycemic Control Targets and Glucose Monitoring for Children, Adolescents, and Young Adults With Diabetes.” Pediatric Diabetes 19, supp. 27 (October 2018): 105-114. https://doi.org/10.1111/pedi.12737. 6. Alva, Shridhara. "FreeStyle Libre 2 - A New iCGM Device." (2020). Accessed Mar 2021 from: https://www.danatech.org/media/okfhq1gu/adc-23842v3-revised-august-3-2020.pdf.

ADC-06051 v7.0 06/22

Important Safety Information

FreeStyle Libre 14 day system: Failure to use FreeStyle Libre 14 day system as instructed in labeling may result in missing a severe low or high glucose event and/or making a treatment decision, resulting in injury. If readings do not match symptoms or expectations, use a fingerstick value from a blood glucose meter for treatment decisions. Seek medical attention when appropriate or contact Abbott at 855-632-8658 or FreeStyleLibre.us for safety info.

FreeStyle Libre 2 and FreeStyle Libre 3 systems: Failure to use FreeStyle Libre 2 or FreeStyle Libre 3 systems as instructed in labeling may result in missing a severe low or high glucose event and/or making a treatment decision, resulting in injury. If glucose alarms and readings do not match symptoms or expectations, use a fingerstick value from a blood glucose meter for treatment decisions. Seek medical attention when appropriate or contact Abbott at 855-632-8658 or FreeStyleLibre.us for safety info.

The product images are for illustrative purposes only.

The circular shape of the sensor housing, FreeStyle, Libre, and related brand marks are marks of Abbott. Other trademarks are the property of their respective owners.

No use of any Abbott trademark, trade name, or trade dress in this site may be made without prior written authorization of Abbott Laboratories, except to identify the product or services of the company.

This website and the information contained herein is intended for use by residents of the United States.

ADC-29111 v11.0 05/22

Cookie Policy.

FreeStyle Libre uses cookies to give you the best possible service. By using our website, you consent to the use of cookies. More on this