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Select Device Freestyle Lingo Freestyle Libre 3 Freestyle Libre 2 Freestyle Libre 14 Day Dexcom G7 Dexcom G6 Dexcom Stelo Guardian Connect Medtronic Simplera Eversense Meter Omnipod Omnipod Dash Medtronic 780G Medtronic 630G Tandem t:slim X2 Bigfoot Unity Medtronic InPen Tempo Pen NovoPen 6/NovoPen Echo Insulin Pen Afrezza CeQur Simplicity Patch V-Go Patch Omnipod GO Patch Syringe and Vial Beta Bionics iLet Pancreas Control IQ with Dexcom Control IQ with Freestyle Libre Medtronic 780G with Smart Guard Omnipod 5 Tandem Mobi Tidepool Loop twiist DIY Loop Apple Series 6/7/8/9/10/SE (2nd Generation) Garmin vívosmart 5™ Garmin Venu Sq 2 Garmin Venu 3 Garmin vivoactive 5 Garmin Fenix 8 Garmin vivofit jr 3 Garmin Forerunner 165/265/965 Garmin epix (Gen 2) Garmin Enduro 3 Fitbit Ace LTE Fitbit Charge 6 Fitbit Inspire 3 Fitbit Versa/Versa 2/4/Versa Lite Fitbit Sense 2 Fitbit Luxe Google Pixel 2/3 Samsung Galaxy 4/5 Xiaomi Mi Band 9 Oura Ring Whoop 4.0 Withings ScanWatch 2 Withings ScanWatch Lite Pedometer 3D Pedometer
Summary
The FreeStyle Libre 2 is the thinnest, all-in-one glucose sensor/transmitter and requires scanning using a handheld reader or compatible smartphone with an app. This sensor lasts for 14 days and only needs fingersticks as backup. Optional low and high blood sugar notifications are available for this system.
FDA approved for insertion on the back of the upper arm (ages 4 years and older).
MARD of 9.3%
Traditional syringe and needle. The most affordable insulin delivery option.
Components
Freestyle Libre 2 : Sensor
Sensor uses a thin, flexible filament inserted just under the skin to measure glucose levels every minute. Push-button applicator allows sensor to be placed on the body in one step.
Freestyle Libre 2 : Receiver
Conveniently access glucose readings using a reader, smartphone, or both. Available for both iOS and Android devices.
Syringe and Vial : Bolus Insulin
Bolus (fast-acting) insulin vial for meal time or high blood sugar correction.
Syringe and Vial : Basal Insulin
Basal (long-acting) insulin vial for steady release of insulin that helps control blood sugar between meals, and overnight.
Syringe and Vial : Needles
Classic syringes with plunger used to fill insulin for injection
Device Details
Overview
All-in-one glucose sensor/transmitter with low and high blood glucose alarms can be worn on the upper arm.
Nothing on the body when not in use but very visible when dosing.
Affordability and Access
$$$$
Widely covered. Provided by pharmacies. Price range; $0-$100/month. Often the cheapest and easier to access sensor.
$$$$
Syringes are available worldwide in pharmacies or DME without prescription. Price Range: $0-$300/month depending on insurance coverage.
Data Monitoring Options
Yes
After each sensor scan with the mobile app or reader, data is automatically sent to the user’s LibreView account which enables sharing with HCPs and caregivers via the LibreLinkUp app. Data upload is possible with Glooko and Tidepool data-management systems.
No Options
Data View Options
Yes
Freestyle Libre 2 app provides glucose readings and alarms, multiple data views, the ability to share glucose data and real-time alarms with LibreLinkUp, and the ability to connect to a clinician's practice through LibreView.
No Options
Duration and Storage
14 Days
Sensors last 14 days and work between 50ºF - 113ºF. They are shipped in orders of 1-3 months at a time - which is 2-6 boxes at a time.
28 Days
Open vials can be stored at room temperature (not above 80º F) for up to 28 days. Unopened vials should be stored in the refrigerator (36ºF - 86ºF.)
Vision / Auditory / Dexterity
YES text to speech
YES vibration alerts
3 sound sources
A LOT of dexterity needed
NO text to speech
NO vibration alerts
A LOT dexterity for insertion
Patient Considerations
Active Lifestyle
Water-resistant for up to 3 feet deep for 30 minutes and light on the body, does not get in the way of activity. The reader must be within 1.5 inches of the sensor to scan it.
Limited Adjustability. No way to adjust long-acting insulin for higher activity on the fly.
Avoiding Highs and Lows
Optional glucose alerts for low and high glucose levels. Trend arrows show the direction glucose is heading, with the rate of change.
Limited customizability. Requires a high level of engagement and effort to avoid highs and lows but can be paired with a CGM for improved blood sugar control.
Comfort
Low profile sensor and small adhesive.
Many components. Must carry insulin vials and large syringes but nothing attached to the body.
Easy Insulin Dosing
Scanned sensor trends can be used for dose adjustment.
Requires attention. You have to do the math to figure out your dose. Unable to adjust basal in real-time.
Easy to Use
Requires scanning. Self-application and manual scanning are required. Easy self-application.
Many steps. Requires effort to figure out doses and deliver insulin every single time you need it.
Fewer Fingersticks
Factory-calibrated sensor. Finger-sticks needed for backup only.
Frequent finger-sticks are required.
Privacy
Hypoglycemia safety alarm. Discreet size but built-in hypoglycemia safety alarm alerts users when glucose is below 55 mg/dl and is always on.
Hideable. Vials and syringes can be hidden when not in use but very visible when in use. Frequent injections are unavoidable.