The FreeStyle Libre 3 is the latest glucose monitoring system from Abbott Pharmaceuticals. Their new sensor is their smallest to date.
The Libre 3 is a Continuous Glucose Monitor. It has the ability to send glucose readings to your cell phone every minute and keeps track of historical readings.
The FDA approved the Libre 3 for use in the USA on May 31, 2022. It will be available for sale in US pharmacies later this year. This system has been approved for use in Europe since September of 2020.
What is Libre?
The FreeStyle Libre hit the diabetes market as an alternative to higher priced continuous glucose monitors. The first Libre was classed as a Flash monitoring system. It consisted of a sensor that was worn on the arm and then a reader that was wanded over the sensor to give you a current reading. While it did not give you historical data (showing you what your readings were before), it did provide instant, pain-free glucose readings that helped people with diabetes make decisions on their care.
As the Libre has evolved, it moved into the continuous glucose monitor category. The Libre 3, as you will see, now shares real-time readings as well as historical data to your cellphone or reader.
What are the key features of the FreeStyle Libre 3?
The biggest talked about difference between the Libre 3 and previous generations of Libre is its size. The new sensor is smaller than two stacked US pennies and weighs 1.1 g. Because of its small size, Abbott states that the Libre is also more sustainable for the environment. It has a 41% reduction in plastic use and 43% decrease in carton paper.
The new sensor will still last for 14 days before it must be changed out. Abbot has made changing the FreeStyle Libre 3 easier. It is now just one piece.
According to a Reddit user, “the application is much easier because it already comes with the two parts (applicator and sensor) sticking together, so it’s just a matter of seconds to apply it.”
The Bluetooth integration is stronger in the FreeStyle Libre 3. This means that readings can be sent to your phone even when you are 33 feet away.
Finally, the Libre 3 also has real-time glucose level viewing, glucose history tracking and optional alarms, as well as notifications for serious medical events, such as hypoglycemia.
Which cell phone platforms does the Libre 3 work with?
The Libre 3 can be paired with iOS and Android mobile apps using the FreeStyle LibreLink.
Who is it approved for?
The Libre 3 is approved by the FDA and received its CE marking in Europe for use in patients with diabetes aged four years and older.
How does it compare to the Libre 2?
The Libre 3 is more accurate than its previous versions. An Abbott press release states that the Libre 3 has an overall mean absolute relative difference (MARD) of 7.9%, whereas the Libre 2 has a MARD of 9.2%.
Both systems have 14 day sensors with factory calibration.
The Libre 3 has a much smaller sensor and easier to use applicator than any previous generation of FreeStyle Libre systems.
Both systems have the ability to measure glucose every minute, but the Libre 3 enables real-time glucose level viewing, glucose history tracking and optional alarms, as well as notifications.
What is the cost?
Abbott has stated that once again, they will release the Libre 3 at the same price point as the Libre 2. The Libre 2 was released at the same price point as the original Libre.
Compare CGM Features
Download the free PDF to compare Continuous Glucose Monitors
JANIS REED says
I have now sent a letter to Health Canada to ask when this will be authorized for use in Canada, the sooner the better. I can hardly wait to try it out.
Have you heard anything back from Health Canada?
Barb Wagstaff says
We are still waiting 🙁
Rick Phillips says
Competition in the CGM market is nothing but great for all of us.
Daniel A. Cea II says
The sensors for the 3 interfere with Bluetooth headphones and earpieces. If you use them regularly it will cause a problem. The 2 at least had the option of a separate reader that the 3 does not.
Looking forward to the libre 3 in Canada and hoping it’s more accurate. I find the Libre 2 not that accurate – reads low consistently. Estimated A1C is about 20% lower than actual.
Barb Wagstaff says
Wow. That is a pretty big difference.
Karl Fields says
I currently use the FreeStyle Libre 1. I use my reader as well as my wife’s smart phone with the FreeStyle app. I discovered by accident that if you read sensor with smart phone app before you read sensor with FreeStyle Monitor, you cannot use the reader. How does one go about changing from 1 to 3? Do I need a new prescription? If so, who do I send the prescription to? Does version 1 do anything version 3 doesn’t do? Don’t want to lose any functions.
Barb Wagstaff says
I don’t believe so.
Yes, you need a new prescription for both the sensors and the reader. You will also need to download a new app specifically for Libre 3.
Unfortunately none of the Libre apps, readers or sensors are interchangeable among versions.
Celine Gonsalves says
I have started using libre 3. It is not so accurate as the 2. Sometimes there is a 50 point sometimes it is 25 point difference
Robert Ungar says
I’m also seeing a 50 point difference . The 3 is higher . Pretty consistently.
Keith Kibler says
You are very correct !
Keith Kibler says
I have used the Libre 3 for 5 months .it lasts for 14 days but the manual admits it is inaccurate for the first 48 hours. 2of the last three Libre 3s have been wildly inaccurate and as much as 55 pts off .
When you call Abbot , which I did today, they told me it was a “known problem” after I told them the serial number.
So they are selling something they know or should know is not working (and could harm you) which they replace if you complain but they don’t tell you or your pharmacy unless you complain .
I can’t trust this!
I just received my Freestyle Libre 3. After two hour i am getting a signal loss and Alarm not available. What is causing this?