libre 3 device image
Tandem Device Image Mobile Bolus copy v2

Summary

The FreeStyle Libre 3 is the smallest, thinnest, all-in-one glucose sensor/transmitter CGM and lasts 14 days. This sensor sends minute-by-minute glucose readings to a compatible smartphone app 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 7.9%.

This system combines the Tandem t:slim x2 with the Dexcom G6 or G7 continuous glucose monitor (CGM) to automatically adjust insulin delivery in response to glucose trends. It's easy to use and allows bolus dosing directly from a compatible iOS or Android smartphone. 

Components

Freestyle Libre 3 : Sensor

Freestyle Libre 3 : 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 3 : Receiver

Freestyle Libre 3 : Receiver

Conveniently access glucose readings using a reader, smartphone, or both. Available for both iOS and Android devices.

Control IQ with Dexcom : Pump

Control IQ with Dexcom : Pump

Touch screen pump connects tubing to a small patch called an infusion set that attaches to the body.

Control IQ : Sensor

Control IQ : Sensor

Automatic applicator inserts sensor just under the surface of the skin and can be applied to many places on the body.

Control IQ with Dexcom : Controller

Control IQ with Dexcom : Controller

t:slim pump receives CGM readings to automatically adjust basal insulin delivery via an infusion set. Compatible smartphone can be used to view and administer boluses via the t:connect app.

Control IQ : Infusion Set

Control IQ : Infusion Set

An infusion set contains the thin plastic tubing that delivers insulin from the pump to the body.

Device Details

Overview

Smallest, thinnest, all-in-one glucose sensor/transmitter with low and high blood glucose alarms can be worn on the upper arm.

The system automatically adjusts insulin levels from the Tandem t:slim X2 pump based on the Dexcom G6 or G7 readings for more time in range. 

Affordability and Access

$$$$
Widely covered. Provided by pharmacies. Price range; $0-$100/month. Often the cheapest and easier to access sensor. 

$$$$
Widely covered for insulin-dependent type 1 and 2. Supplies for Pump and Sensor provided by DME suppliers. Price range; $5-$6,995 to start and $0-$200/month.

Data Monitoring Options

Yes
Sensor automatically sends data to the user’s LibreView account which enables sharing with HCPs and caregivers.

Yes
The t:connect mobile app for the t:slim X2 pump wirelessly uploads pump and CGM data to the cloud-based t:connect web application.

Data View Options

Yes
Freestyle Libre 3 app or Libre by Abbott 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. 

Yes
Data can be viewed directly on the pump screen or on the t:connect mobile app (available for both iOS and Android devices).

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.

3-day pump 10-day sensor
Sensors last 10 days and transmitters last 90 and work at 50ºF – 108ºF. Pump can be used for up to 72 hrs, battery life lasts five days with the use of CGM, and work between 40°F - 99°F. 

*CGM transmitter is only required for the Dexcom G6 model. 

Vision / Auditory / Dexterity

NO text to speech
YES vibration alerts
A LOT of dexterity needed

NO text to speech
YES 
vibration alerts
A LOT
of dexterity needed

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. 

Exercise Activity. Can manually increase target range to 140-160 mg/dl. Insulin decreases when Control IQ predicts CGM ≤140 mg/dl and increases when ≥ 160 mg/dl within 30 minutes. Autocorrections will still occur. Pump is not waterproof. CGM is waterproof. 

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. 

Auto basal and bolus insulin. Responds to CGM data by increasing or decreasing basal insulin delivery to prevent highs and lows and maintain a target blood glucose of 110 mg/dl. Auto-bolus is available once per hour to correct blood sugar above 180 mg/dl.

Comfort

Lowest profile sensor and smallest adhesive (about the size of two stacked U.S pennies). 

Low profile. Low profile/low maintenance sensor. Small tubed pump with the most infusion sets to pick from.

Easy Insulin Dosing

Sensor trends can be used for dose adjustment.

Automatically adjusts dosing. Sensor integration allows for the pump to automatically adjust insulin doses. More customizable dosing than pens or syringes. Basal in 0.001 increments, bolus in 0.01 increments. Extended bolus available.

Easy to Use

No scanning required. Minute-by-minute readings are sent directly to the mobile app. 

Modern & flexible. Rechargeable and touchscreen pump. Sensor integrated with multiple devices in case you change up what you're using. 

Fewer Fingersticks

Factory-calibrated sensor. Finger-sticks needed for backup only. 

Factory-calibrated sensor. Fingersticks needed for backup only.

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. 

Discreet. Ability to check blood sugar on phone or watch. Ability to bolus on a compatible smartphone. Pump has tubing but can be clipped to clothing or placed in a pocket to be discreet when needed. Dexcom's built-in hypoglycemia safety alarm alerts users when glucose is below 55 mg/dl and is always on.