Abbott FreeStyle Libre 2 Specification sheet

Get
Started
Your Guide to
the 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.
See Indications and Important Safety Information on back.

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Congratulations on your new FreeStyle Libre 2 system!
Whether you’re new to using a continuous glucose
monitoring system (CGM) or need a refresher, this guide is
for you. Inside, you’ll find tips for getting the most out of
your CGM system to help manage your diabetes.
—Team FreeStyle Libre
Welcome
Table of Contents
10 Activate Sensor
Tips to Keep Sensor in Place
8
Apply Sensor
6
Meet the System
4
11 Scanning Tips
12 Understand Sensor Glucose Readings
18 Set Target Range
14 Using Alarms for Extra Safety
15 Customizing Alarms
16 Acting on Alarms
26 Dierent and Accurate
22 Tips on Wearing Your Sensor
Remove and Replace Sensor
24
20 Share Your Data
19 Learn From Your Data
25 CGM Dierence

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Meet the FreeStyle
Libre 2 System
Check your glucose with a painless,*11-second scan
instead of fingersticks.†Understand how your body
responds to treatment, food, and exercise. See patterns
and trends and customize optional, real-time alarms‡for
lows and highs. Share insights with healthcare providers.
Get the complete picture of your glucose levels, not just
a moment in time.
* Data from this study was collected with the outside US version of 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.
†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.
‡Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device.
Reference: 1. Haak, T.
Diabetes Therapy (2017): https://doi.org/10.1007/s13300-016-0223-6.
1
2
3
Applicator
Used to apply the sensor
Sensor
Circle sensor worn on the back of the upper arm
Has a thin, flexible filament that is painlessly*1inserted
just under the skin
Handheld Reader
Used to scan and see data
1
2
3

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3 Steps to Apply Sensor
Sensors stick better when you wash, clean, and dry your
arm before application.
01 Wash, Clean, and Dry
Select a site on the back of your upper arm that stays flat during
normal activity. Clean skin with non-moisturizing, fragrance-free
soap and water. Use an alcohol wipe to disinfect the skin and
let air dry before proceeding.
02 Prep Applicator
Open sensor by peeling back the lid. Unscrew cap from the
sensor applicator. Line up marks on the sensor applicator.
Press down firmly and then lift.
03 Apply
Apply the sensor to the back of your upper arm by pressing
firmly. Listen for the click. Wait for a few seconds and pull back
slowly, leaving the sensor on the skin.
Get support and information at FreeStyleLibre.us
Quick Tip
Make sure to rotate the site to allow skin to fully heal.
Switching arms each time can help.

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The FreeStyle Libre 2 system is designed to stay on for
up to 14 days.
• Secure sensor by pressing it down and running your finger
along the sensor adhesive
• Apply sensor to dierent sites on the back of the upper arm
each time to avoid irritating your skin
• Avoid placing sensor on moles, scars, stretch marks, and lumps.
Shave hair on arm, if necessary
Tips to Help Keep Your
Sensor in Place
Some people use the following products for extra stickiness
and protection:*
Skin-Prep™ Protective Barrier Wipe
Protective liquid dressing that allows skin to
breathe so tapes and films adhere better
Tegaderm I.V.™
A transparent film that provides adhesive
strength
Mastisol® Liquid Adhesive
Clear, non-irritating, non-water-soluble liquid
adhesive
Torbot Skin Tac™
Hypoallergenic and latex-free “tacky”
skin barrier
Over-bandage†
Be sure to use only medical-grade adhesive,
bandage, or tape. Apply and remove at the
same time you apply or remove your sensor.
Leave the opening/hole over the center of the
sensor uncovered so it can breathe.
†Over-bandage must be applied at the time of sensor application, the opening/hole in the center of the sensor must not
be covered. Additional medical grade bandages/tape can be applied but do not remove bandages/tape once applied
until sensor is ready for removal.
*Abbott Diabetes Care (“ADC”) is not affiliated with the manufacturers of the products listed. Reference to third-party
products does not constitute or imply an endorsement, recommendation, sponsorship or favoring of any product
or manufacturer. ADC is not responsible for the completeness or accuracy of any information regarding third-party
products. ADC makes no representations, expressed or implied, regarding third-party products or their manufacturers,
quality or suitability for you. Manufacturers’ instructions for use of each product should be followed.

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Steps to Activate Sensor
Follow these steps to be ready to get readings in about
one hour.
How to Scan Your Sensor
Hold your reader within 1.5 inches of your sensor to scan
right through your clothes.†
* Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device.
†The reader can capture data from the sensor when it is within 1 cm to 4 cm of the sensor.
Reference 1. FreeStyle Libre 2 User's Manual.
Alarms*Tip
Alarms*are on by default.1
For more information on customizing alarms, go to page 15.
01 Turn on FreeStyle
Libre 2 Reader
03 Scan Sensor with Reader
04 Let Sensor Warm Up for
One Hour
Then you can start getting
glucose readings.
02 Tap Scan New Sensor
OK
New Sensor
Starting Up
Sensor can be used in:
60
minutes
Scanning Tips
The more you scan, the more you know about your
glucose levels.
Scan Frequently
Remember to scan at least once every 8 hours to avoid gaps
in your daily graph. The more you scan, the more complete
picture of your glucose levels you and your doctor have to help
manage your diabetes.
Key Times to Scan
Before & After Meals or Snacks
Before & After Exercise and
Sporting Events
Before Sleep and After Waking Up
When You Feel Low Glucose Symptoms

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Understand Your Sensor
Glucose Readings
350
250
150
50
2pm 6pm 10pm
mg
dL
110
Ends in 13 days
10:23pm Sensor Glucose Screen
This screen shows your current
glucose reading and a trend
arrow. With trend arrows, you can
monitor the direction your glucose
is heading.
TIP: Trend arrows may not always
appear (see Check Glucose
Symbol below).
Other times when you need to
do a blood glucose test:
• If you think your glucose
readings are not correct
• If your glucose readings do
not match how you feel
• If the reading does not include
a current glucose number
Current reading What trend arrows mean:
110 Glucose is rising quickly
(more than 2 mg/dL per minute)
110 Glucose is rising
(between 1 and 2 mg/dL per minute)
110 Glucose is changing slowly
(less than 1 mg/dL per minute)
110 Glucose is falling
(between 1 and 2 mg/dL per minute)
110 Glucose is falling quickly
(more than 2 mg/dL per minute)
Reader Symbol
When you see this symbol
during the first 12 hours of
wearing a Sensor, confirm
Sensor glucose readings
with a blood glucose test
before making treatment
decisions.
Check Glucose Symbol
How to Interpret
Trend Arrows
You have probably noticed the trend arrow next your
current glucose reading. Sometimes it points up,
sometimes sideways, and sometimes down. But what
does it mean? And how can it help you manage your
glucose levels?

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Use Alarms*for
Extra Safety
The FreeStyle Libre 2 system has optional, real-time alarms*
to help keep you safe, even at night. Alarms*are on by
default and can be customized. Alarms feature preset
tones, a vibration option, and adjustable volume. To receive
alarms, your reader should be turned on, within 20 feet of
you, and unobstructed at all times. If your reader is out of
range of your sensor, you may not receive glucose alarms.
* Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device.
Alarm*
Get an alarm from the FreeStyle Libre 2 reader when your
glucose is too low or too high. You also receive an alarm when
the reader has lost contact with the sensor for more than 20
minutes.*
Scan
Scan your FreeStyle Libre 2 sensor to see your glucose reading,
trend arrow, and 8-hour history.
Act
Use your results to make treatment decisions.
To learn more about alarms,*visit FreeStyleLibre.us
Customize Alarms*
Alarms*are easy†to set based on your target glucose goals.
* Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device.
†Data from this study was collected with the outside US version of 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.
References: 1. Haak, T.
Diabetes Therapy (2017): https://doi.org/10.1007/s13300-016-0223-6. 2. Please see the
FreeStyle Libre 2 User’s Manual for complete instructions. 3. 70 mg/dL is the default Low Glucose Alarm level and can be
set between 60–100 mg/dL. 240 mg/dL is the default High Glucose Alarm level and can be set between 120–400 mg/dL.
02 Tap Alarms then
Change Alarm Settings
Alarms
Sound & Vibration
Time & Date
Settings
1 / 4
03 Use arrows to set Low and High Glucose Alarms*3
On
?
mg/dL
240
done
High Glucose Alarm
On
?
mg/dL
70
done
Low Glucose Alarm
01 Tap the Settings2symbol
Ends in 14 days
Check
Glucose
Review
History
10:23

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Acting on Alarms*
The reader alarms*for about 1 minute then repeats itself
every 5 minutes until dismissed.
Adjust Alarms*sound and vibration Settings through
“Sound & Vibration" in the settings menu.
When any alarm*is on, sound/vibration and signal states
display on the Home Screen.
* Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device. * Notifications will only be received when alarms are turned on and the sensor is within 20 feet of the reading device.
Symbol What it means
Sound and Vibration ON
Sound and Vibration OFF
Sensor communicating with Reader
Sensor not communicating with Reader
Refer to User's Manual for additional symbols.
Low Glucose Alarm
Dismiss Alarm & Check
Glucose
Low Glucose
Notifies you when your glucose
is below the level you set.
High Glucose Alarm
Dismiss Alarm & Check
Glucose
High Glucose
Notifies you when your glucose
is above the level you set.
Scan Sensor now?
Signal Loss Alarm
YesNo
Signal Loss
If your sensor is not communicatiing
with the Reader, you will not receive
glucose alarms.

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Set Target Range
Your Target Glucose Range goals can be entirely specific
to you and may change over time.
Target Glucose Range is pre-set to 70 to 180 mg/dL on the
FreeStyle Libre 2 reader. To set your target glucose range, go
to the Settings Menu and scroll to Report Settings. From there,
you can select your target glucose range.
Learn From Your Data
Access reports on the FreeStyle Libre 2 reader.
Time in Range Time in Range (TIR) is the percentage of time you
spend within the target glucose range set by your doctor. The
standard target range falls between 70 mg/dL and 180 mg/dL.1
Time in Range lets you see when you are above, in, and below
your target glucose range.
Reference: 1. Battelino, Tadej, Thomas Danne, Richard M. Bergenstal, et al. “Clinical targets for continuous glucose
monitoring data interpretation: recommendations from the international consensus on Time in Range.“
Diabetes Care
42, no. 8 (June 2019): 1593-1603. DOI: https://doi.org/10.2337/dci19-0028.* Default range is 70-180 mg/dL. Consult with a healthcare professional on individual target glucose range.
OK
34%
54%
12%
Time In Target
Above
In Target
Below
Target Range
70-180 mg/dL
Last 7 Days
Above Target Range (>180 mg/dL)
Target Glucose Range (70–180 mg/dL)
Below Target Range (<70 mg/dL)
Learn more about Time in Target and other reports
like Daily Patterns and Low Glucose Events at
FreeStyleLibre.us
Your A1c value indicates your average glucose levels*over the
past three months. It’s helpful to see how you’ve been managing
your diabetes. But even if you hit your A1c goal, you might miss
your daily highs and lows.

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Share Your Data
Share your glucose data with your healthcare provider
using LibreView,*a secure, cloud-based diabetes
management system.
Create a LibreView*account and link your account to your
healthcare provider in 3 easy steps:
1. Sign Up
Sign up is easy, free and accessible online, so no special
hardware needed.
2. Simple Upload
Log into your LibreView*Account, connect your glucose
device, and follow the on-screen instructions to upload data.
3. View and Share
Discover glucose patterns and trends to help you and your
healthcare professionals make informed decisions about your
health. Your glucose data is stored securely in the cloud so
you and your healthcare professional can view your reports
anytime, anywhere.†
* LibreView is developed, distributed, and supported by Newyu, Inc. The LibreView data management software is
intended for use by both patients and healthcare professionals to assist people with diabetes and their healthcare
professionals in the review, analysis and evaluation of historical glucose meter data to support effective diabetes
management. The LibreView software is not intended to provide treatment decisions or to be used as a substitute
for professional healthcare advice.
†From most web-connected devices.
* LibreView is developed, distributed, and supported by Newyu, Inc. The LibreView data management software is
intended for use by both patients and healthcare professionals to assist people with diabetes and their healthcare
professionals in the review, analysis and evaluation of historical glucose meter data to support effective diabetes
management. The LibreView software is not intended to provide treatment decisions or to be used as a substitute
for professional healthcare advice.
Daily Patterns
December 7, 2020 - December 20, 2020 (14 Days)
12am
Target Range
Carbs
grams
Rapid-Acting
Insulin
Long-Acting
Insulin
350
126 120 116 117 149 162 159 140 144 154 152 137
325
300
275
250
225
200
100
125
150
50
25
0
70
180
141
351g
2am 4am 6am 8am 10am 12pm 2pm 4pm 6pm
Median
8pm 10pm 12am
25th to 75th Percentile
10th to 90th Percentile
Average Glucose
Daily Average
mg/dL
12am
200
32g (4) 36g (5) 26g (2) 143g (11) 6g (1) 93g (7) 15g (1)
150
100
50
0
2am 4am 6am 8am 10am 12pm 2pm 4pm 6pm 8pm 10pm 12am
12am
2am 4am 6am 8am 10am 12pm 2pm 4pm 6pm 8pm 10pm 12am
Visit LibreView.com for more information

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Tips for Wearing
Your Sensor
* The reader can capture data from the sensor when it is within 1 cm to 4 cm of the sensor. †Sensor is water-resistant in up to 1 meter (3 feet) of water. Do not immerse longer than 30 minutes.
CLOTHING*
Scan right through your
clothes. Be careful when
placing or removing
clothing so as not to
dislodge or loosen the
sensor.
SHOWERING, BATHING,
AND SWIMMING†
Sensor is water-resistant.
Do not submerge more than
3 feet (1 meter) or keep under
water longer than 30 minutes
at a time. Gently pat dry after
getting it wet.
MEDICAL PROCEDURES
Notify your healthcare provider and remove your sensor when
necessary. Exposing the sensor to MRI, CT scan, diathermy, or
X-ray may cause damage and incorrect readings.
TRAVELING
System is safe to use while
on an aircraft. Do not expose
the sensor to airport full-body
scanners. Request another
type of screening to avoid
removing your sensor.
EXERCISING
Use skin adhesive if sweating
loosens sensor. Try an
over-bandage if playing
contact sports.

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*Abbott Diabetes Care (“ADC”) is not affiliated with the manufacturers of the products listed. Reference to third-party
products does not constitute or imply an endorsement, recommendation, sponsorship or favoring of any product or
manufacturer. ADC is not responsible for the completeness or accuracy of any information regarding third-party products.
ADC makes no representations, expressed or implied, regarding third-party products or their manufacturers, quality or
suitability for you. Manufacturers’ instructions for use of each product should be followed.
Remove and Replace
Your Sensor
Products that can be helpful for removal but are optional:*
• Baby Oil: Soft moisturizer
• Remove™ Adhesive: Removes adhesive residue on the skin
• UNI-SOLVE™ Adhesive Remover: Formulated to reduce
adhesive trauma to the skin by thoroughly dissolving dressing
Sensor Disposal
The sensor should be disposed of in accordance with all
applicable local regulations related to the disposal of electronic
equipment, batteries, sharps, and materials potentially exposed
to body fluids.
Replace Sensor
Remember to choose a dierent spot on the back of your upper
arm to apply the new sensor. This will help avoid skin irritation.
Remove Sensor
Your reader will alert you when it’s time to remove the sensor.
Pull up the adhesive edge that keeps the sensor attached to
your skin. Then slowly peel from your skin in a single motion.
The CGM Dierence
CGM readings can be dierent than Blood Glucose Monitor
(BGM) readings but are proven to be accurate.1CGM readings
can be used for treatment decisions.*
* 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.
Reference: 1. FreeStyle Libre 2 User’s Manual.
CGM readings are
taken from interstitial
fluid, a thin layer of
fluid that surrounds
the cells below your
skin.
Blood glucose
readings are taken
from blood with
fingersticks.
FPO
Glucose enters your bloodstream first
before it enters the interstitial fl u i d .
Skin Layer
CGM Sensor
CGM measures interstitial fluid glucose, not blood glucose.
There are times when your CGM and BGM readings may
be different, including when:
• You took more than 500 mg per day of vitamin C (ascorbic acid)
• It is the first 12 hours wearing a new sensor
• Your sensor is not securely applied
• A sensor kit was stored somewhere outside of temperature
range (36°F to 82°F)
Here is how to remove, replace, and properly dispose of
system components.

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Why are glucose readings dierent?
Rather than taking glucose readings from your blood, CGM sensor
readings are taken from interstitial fluid, a thin layer of fluid that
surrounds the tissue cells below your skin. As carbohydrates are
digested, glucose enters your bloodstream before it is absorbed
into the interstitial fluid.
Think of glucose readings as the cars of a train, where the front
of the train is blood glucose and the back of the train is sensor
glucose.
Dierent and Accurate
BG = Blood Glucose
SG = Sensor Glucose
SG
SG
SG
BG
BG
BG
88
103
129
91
92
93
SG
116
Meals
Insulin Activity
BG
160
When the train is traveling on a flat track, where there is little
fluctuation between glucose levels, blood glucose and sensor
glucose are similar.
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Understanding the lag1
Because glucose enters the bloodstream first, blood glucose
readings lead sensor glucose readings. Eventually, sensor glucose
readings catch up to blood glucose readings just like the back of
a train following the front of a train.
Instead of focusing only on a single moment in time, CGM gives
you a more complete picture of where your glucose is going, and
where your glucose has been, so you can make more informed
treatment decisions.
When glucose levels are
changing rapidly, blood
glucose may not be the
same as sensor glucose.
Reference: 1. Tarini, Chetty. "The Technology of Glucose Sensors." In Glucose Sensor Use in Children and Adolescents ,
pp. 7-12. Springer, Cham, 2020.
This dierence is known
as the lag,1and will be
more evident after meals,
insulin, and activity.
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Indications and Important Safety Information
The FreeStyle Libre 2 Flash Glucose Monitoring System is a continuous glucose monitoring (CGM) device with real time
alarms capability indicated for the management of diabetes in persons age 4 and older.*
WARNINGS/LIMITATIONS*: The System must not be used with automated insulin dosing (AID) systems, including
closed loop and insulin suspend systems. Remove the sensor before MRI, CT scan, X-ray, or diathermy treatment. Do not
take high doses of vitamin C (more than 500 mg per day), as this may falsely raise your Sensor readings. Failure to use
the System according to the instructions for use may result in missing a severe low blood glucose or high blood glucose
event and/or making a treatment decision that may result in injury. If glucose alarms and readings from the System do
not match symptoms or expectations, use a fingerstick blood glucose value to make diabetes treatment decisions. Seek
medical attention when appropriate and contact Abbott toll-free 855-632-8658 or visit * www.FreeStyleLibre.us for
detailed indications for use and safety information.
*Please refer to www.FreeStyleLibre.us for the indications and important safety information.
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. Product images are for illustrative purposes only.
©2021 Abbott. ADC-29385 v1.0 02/21
Questions?
We’re here for you. If you would like more information or
have additional questions about the FreeStyle Libre 2 system,
please contact our Customer Service Team or visit our
website for more information and useful resources.
For more tips and product information, visit www.FreeStyleLibre.us
Customer Care 1-855-632-8658
Available 7 days a week 8AM to 8PM Eastern Time; excluding holidays
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