Freestyle Libre 14 Day: Accuracy, Sensor Size & More

People searching for the Freestyle Libre 14 day should be well aware of the fact that the Freestyle Libre 2 sensors and Freestyle Libre 3 sensors both last up to 14 days. Although the lifespan of these sensors is the same, there are considerable differences between these sensors. The Freestyle Libre 3 sensor is the world’s first smallest sensor with impressive accuracy. This blog provides you with features, accuracy, size, and eligibility of these sensors.

A Glimpse at CGM Sensors:

Continuous glucose monitors (CGMs) typically consist of a small sensor to be inserted with the help of a micro pin under your skin and a reader to show you your glucose data. Many of the new CGMs are fully smartphone-controlled, and thus, using a reader is not mandatory with these sensors.

The micro pins inserted under your skin collect your glucose data from interstitial blood, and this data is transmitted by the transmitters. Some of the old transmitters used to have a separate transmitter, e.g., Dexcom G6 sensors. However, most of the latest CGMs have transmitters installed within the sensors, e.g., the Libre 2 sensor and the Libre 3 sensor.

FreeStyle Libre 2 vs. FreeStyle Libre 3 (14-day sensors)

Feature	FreeStyle Libre 2	FreeStyle Libre 3
Sensor Size	35 mm diameter, 5 mm height	21 mm diameter, 2.9 mm height
Weight	~5 grams	~1 gram
Sensor Wear Duration	Up to 14 days	Up to 14 days
MARD (Mean Absolute Relative Difference)	~9.4%	7.8%
Warm-Up time	60 minutes	60 minutes
Water Resistance	Up to 1 meter (3 feet) for 30 minutes	Up to 1 meter (3 feet) for 30 minutes
Alarms	Optional real-time high/low glucose alarms	Real-time high/low glucose alarms
Data Sharing	LibreView (cloud-based system primarily used by the Doctors) and LibreLinkUp app (usually used by parents or loved ones to keep an eye on your glucose levels)	LibreView (cloud-based system primarily used by the Doctors) and LibreLinkUp app (usually used by parents or loved ones to keep an eye on your glucose levels)
Reader Compatibility	Requires FreeStyle Libre 2 reader	Compatible with FreeStyle Libre 3 reader
Smartphone Control	Supported via the LibreLink app	Supported via the LibreLink app
Indicated Insertion Sites	Upper arm (avoiding moles, scarring, or recent insulin injections)	Upper arm (avoiding moles, scarring, or recent insulin injections)
Compatibility with Insulin Pumps	NA	NA
Age Indication	Ages 4 and older	Ages 4 and older
Prescription Requirement	Required for purchase	Required for purchase
Reader Dimensions	95 mm x 60 mm x 16 mm. Weight: 65 grams	95 mm x 60 mm x 16 mm. Weight: 65 grams
Reader Battery Life	Approximately 4 days of typical use	Approximately 4 days of typical use
Reader Memory	Stores up to 90 days of glucose data	Stores up to 90 days of glucose data
Reader Operating Temperature	50°F to 113°F	50°F to 113°F
Reader Moisture Protection	Keep dry	Keep dry

Here is the complete guide to sharing glucose data from your LibreView app to the LibreLinkUp app.

While the Freestyle Libre 14 days CGMs have been popular for their accuracy, the Freestyle Libre 15-day CGMs, e.g., Freestyle Libre 3 Plus sensors, offer even more value by giving similar accuracy with longer life and AID system compatibility as well.

Get a free eligibility check in less than 60 seconds today.

Conclusion:

The CGMs have not only switched the way people used to monitor their glucose, but have also helped them elevate their A1C levels. While the Freestyle Libre 14 day has been the top choice of many users, the company has introduced more advanced systems with up to 15 days of life and AID compatibility. Knowing that some people may experience issues claiming CGMs through insurance, Deliver My Meds offers flexible buying options so you can claim yours using insurance or buy one using your debit or credit card.

Frequently Asked Questions

 

Disclaimer: This blog is only for informational purposes. Always consult your healthcare specialist before taking any medication.