FreeStyle Libre 3: Glucose Monitoring System

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  • Buy Freestyle libre 3 online | Ashcroft Pharmacy UK
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FreeStyle Libre 3: Glucose Monitoring System

  • Product features

    Blood Glucose Level Monitoring Sensor

    The FreeStyle Libre 3: Abbott's newest and most advanced glucose monitoring system. Helping people aged 4+ manage their diabetes with more confidence. It is one of the most accurate and reliable CGM systems on the market with a (MARD) of 9.2% for adults. Offering ease of use with a simple one-touch scan.

    • Approved for managing type 1/2 & gestational diabetes
    • Make better food and exercise decisions
    • Voice Accessibility for key features
    • Hypoallergenic for kids and adults
    • Made with latex-free materials
    • Painless & skin friendly
    • Scan every 8 hrs. for optimal accuracy
    • Water-resistant for up to 30 mins.
    • Freestyle Libre 3 compatiable device and OS

    Ashcroft pharmacy UK

    Registered UK Pharmacy Number 1039428

Order Monday to Friday before 14:00pm to guarantee next day delivery

Fastest delivery: Tuesday, 27 Feb 2024


Buy FreeStyle Libre 3 online in the UK

You can order the Freestyle Libre 3 online with 100% discretion and confidentiality through our UK-licensed online pharmacy, Ashcroft Pharmacy.

Freestyle Libre 3 CGM System

FreeStyle Libre 3 is the updated version of Freestyle libre 2 continuous glucose monitoring (CGM) system that provides high-quality, accurate, and affordable diabetes management.

It operates day and night, measuring glucose levels to give insights into how your diet and exercise impact your blood sugar levels. This technology allows you to take control of your diabetes, making informed choices for a healthier lifestyle.

Why Choose FreeStyle Libre 3 Continuous Glucose Monitoring System?

  • Most affordable CGM, no fingersticks,over 99% accurate, reliable, and discreet
  • ✅ CE marked sustainable and eco-friendly
  • ✅ World’s smallest, thinnest sensor
  • ✅ Can be worn while swimming or showering
  • ✅ The sensor updates your glucose result every minute and sends it directly to your compatible smartphone.

⚠️ Key features: Current glucose status, trend arrow showing glucose direction, and alarms for high, low, or signal loss.

⚠️ The FreeStyle Libre 3 is also compatible with the mylife Loop2 AID system, an automated insulin delivery system that can help people with type 1 and type 2 diabetes achieve better blood sugar control.

Check whether your smartphone is suitable for the FreeStyle Libre 3 App

Check whether your smartphone is suitable for the FreeStyle Libre 3 app-Ashcroft Pharmacy

How does FreeStyle Libre 3 system work?

The FreeStyle Libre 3 works differently than traditional finger-pricking methods by using a sensor on your arm to continuously measure your glucose levels in the interstitial fluid, which is found just underneath your skin.

It works through two main components:

❇️ A freestyle libre 3 Sensor:

The Libre 3 system has a little sensor that you put on the back of your upper arm. Applying it is easy with a one-piece applicator. The sensor checks your glucose levels in the fluid under your skin, using a tiny filament just below the skin surface.

It updates your glucose reading every 15 minutes (configurable up to every minute), and sends this data wirelessly to your compatible smartphone, providing continuous and painless blood sugar monitoring.

It also functions well while being covered by clothing. As long as nothing knocks the sensor off of the arm. The sensor lasts for up to 14 days and is water-resistant for showering, swimming, and exercise, however extra caution might be needed.

❇️ Smartphone App:

The FreeStyle Libre 3 app on your compatible smartphone receives the glucose readings from the sensor. The app displays your current glucose level, trends (rising, falling, or stable), and glucose history for up to 14 days.

You can set up optional alarms to notify you when your glucose levels go too high or low. The app also allows you to share your glucose data with your healthcare provider.

☝️ Overall, the FreeStyle Libre 3 is a convenient and effective way for people with diabetes to manage their blood sugar levels.

Download freestyle libre 3 Apple appsDownload freestyle libre 3 android apps

How to apply FreeStyle Libre 3 Sensor?

✅ Preparation

To set up your FreeStyle Libre 3 sensor, follow these simple steps for preparing the back of your upper arm:

  1. Wash: Clean the back of your upper arm using plain soap and water.
  2. Dry: Wipe the area dry with a clean towel.
  3. Cleaning: Use an alcohol wipe to clean the prepared site, and let it air dry.

✅ Application

Once the back of your upper arm is ready, applying the sensor is straightforward:

  1. Unscrew Cap: Remove the cap from the sensor applicator
  2. Position Applicator: Place the sensor applicator over the prepared site on your arm
  3. Secure Sensor: Push down firmly to attach the sensor to your body
  4. Check Installation: After installation, inspect the sensor. Reapply the sensor applicator's lid. Dispose of the used sensor pack and sensor applicator appropriately.
  5. And that's it – simple and hassle-free!

❇️ Quick start guide> Downloadable PDF⬇️ 
❇️ How to use Freestyle Libre 3 > Watch video tutorials

Removing the FreeStyle Libre 3 Sensor safely

  • Use a baby oil or an adhesive remover to help you remove the sensor
  • You can watch this video to know about How to remove the sensor here>
How is the FreeStyle Libre 3 System different from the FreeStyle Libre 2 System?

The FreeStyle Libre 3 sensor, an upgraded version of the Libre 2, offers key improvements in convenience, discretion, and data accessibility. Here's a breakdown of the key differences.

✅ Sensor size and design:

The FreeStyle Libre 3 sensor is likely to be more compact and discreet compared to the Libre 2, making it more comfortable for users.

  • Libre 2: Sensor is slightly larger and thicker, making it more noticeable under clothing
  • Libre 3: Sensor is 40% smaller and 20% thinner than Libre 2

✅ Data Storage:

  • Libre 2: Sensor only stores data for the past 8 hours. If you miss scanning, you lose that data.
  • Libre 3: Sensor stores data for up to 14 days, providing a complete picture of your glucose trends even if you miss scanning occasionally.

✅ Additional Features:

  • Libre 3: Adds optional instant alerts on your smartphone for high and low glucose levels with real-time alarms.
How long is the life of each libre 3 sensor?

The lifespan of each Libre 2 sensor is 14 days, during which it maintains good accuracy throughout the entire two-week period.

How precise is Libre 3's system?

While the FreeStyle Libre 3 is still relatively new, initial data indicates it offers similar precision to the Libre 2, with potentially even better performance in some areas.

The FreeStyle Libre 3 system sets a new standard with unsurpassed 14-day accuracy. Measured by the mean absolute relative difference (MARD), a key performance indicator for CGMs, it achieves an impressive 9.2% for adults.

⚠️ Individual readings may vary more than the MARD suggests due to factors like temperature, skin conditions, and medications.

Storing the libre 3 sensor

Keep the sensor in its original packaging until use. Store it in a cool, dry place away from direct sunlight. Ensure it's out of sight and reach of children.

Can children use this glucose monitoring device?

Yes, children aged four and older can use the Abbott FreeStyle Libre 3 glucose monitoring device.

Can I use the FreeStyle Libre 3 system if I am pregnant?

Yes, the FreeStyle Libre 3 system has been cleared for use during pregnancy for those with Type 1, Type 2 or gestational diabetes.

❌ When shouldn't you use this product?
  • Do NOT use if the Sensor Kit package, Sensor Pack, or Sensor Applicator appear to be damaged or already opened due to risk of no results and/or infection.
  • Do NOT use if Sensor Kit contents are past expiration date.
  • Do NOT use if the Reader appears to be damaged due to risk of electric shock and/or no results.

⚠️ Important: The FreeStyle Libre 3 system is not yet available on prescription in the UK, but you can still get it if you are eligible for NHS funding. To do this, talk to your diabetes healthcare team. They will check if you qualify for the system and, if you do, they will order it for you.

How can i get Freestyle libre 3?
  • Talk to your healthcare team to see if you can get them on prescription.
  • Buy them online.

 FreeStyle Libre 3 sensor's Specifications

  • Water Resistance: IP27: Resistant to water immersion up to 1 meter (3 ft) for 30 mins.
  • Sensor Operating & Storage Relative Humidity: 10%-90%, non-condensing
  • Storage Temp: 4°C to 25°C
  • Suitable operating temp: 10°C to 45°C
  • Bluetooth Range: 33 feet
  • Data-Management apps: Works with FreeStyle Libre 3 app and data accessible on LibreView, a cloud-based diabetes management system.
  •  Required Warm-Up Time: 60 mins.
  • Battery Type: Silver oxide
  • Power Source: 1 silver oxide battery
  • Reading frequency: Every minute (customizable)
  • Storage capacity: 14 day historical data
  • Sensor Duration: Up to 14 days
  • Sensor Weight: 1g
  • Sensor Size: Size of two stacked pennies (2.9 mm x 21 mm)
  • Product Type: Stand-alone, real-time CGM
NameMr Suhail Jamil
RoleSuperintendent Pharmacist
GPhc Number2069518



The FreeStyle Libre 3 All How to Videos Links

Get started with Abbott official tutorial videos:

Discover all you need to know about applying, using, and maximizing the benefits of your FreeStyle Libre 3 system.

FreeStyle Libre 3 Launch Video Presentation

How to Apply the FreeStyle Libre 3 Sensor

How to remove and replace sensor

How to Set Up The FreeStyle Libre 3 App

How to Set Up Alarms in the FreeStyle Libre 3 App

How to View Your Glucose on FreeStyle Libre 3 app

View and Use

How to Share Data Using the LibreLinkUp app

Sharing Data using LibreView for desktop

How to monitor your glucose with FreeStyle Libre 3

How to connect with caregivers?

Use the LibreLinkUp app to share your glucose data with friends, family, and caregivers. It lets them see your glucose readings in real-time and set up personalized glucose alarms.

The app is great for parents and caregivers, helping them stay informed about your glucose levels no matter where they are.


Using the FreeStyle Libre 14-day system incorrectly may lead to missing important low or high glucose events and making wrong treatment decisions, which can cause injury.

If the readings don't match how you feel, use a traditional blood glucose meter for decisions. Seek medical help or contact Abbott if needed.


  • Do you need to remove the sensor during medical tests?

    While you can usually wear your Libre 2 sensor continuously, you might need to remove it for certain medical exams to prevent interference. Before undergoing the following tests, consider taking out your sensor:

    1. MRI
    2. CT scan
    3. X-ray
    4. Diathermy treatment
  • Do the FreeStyle Libre systems need to be calibrated?

    No, the FreeStyle Libre systems do not require calibration. The sensor is calibrated during manufacturing, activated by scanning, and begins recording glucose readings automatically after a 1-hour warm-up period. Both FreeStyle Libre 2 and FreeStyle Libre 3 are part of the same product family.

  • Can the FreeStyle Libre systems be used to make insulin dosing decisions?

    Yes, FreeStyle Libre 2 and FreeStyle Libre 3 help with insulin dosing decisions by providing insights into glucose levels through the app. Users can make daily therapy choices, including insulin dosing, with guidance from their healthcare professional.

  • is freestyle libre 3 skin freindly?

    Yes, the FreeStyle Libre 3 is designed to be skin-friendly. The sensor is typically worn on the back of the upper arm and is formulated to minimize skin irritation or discomfort during use. If you have concerns or experience any issues, it's recommended to consult with your healthcare professional or the product's support services.

  • Where is the best place to put Libre 3 sensor?

    The recommended placement for the FreeStyle Libre 3 sensor is on the back of the upper arm. This location is often chosen for its convenience and comfort

    Always follow the specific instructions provided by the product or your healthcare professional for proper sensor application.

  • Can FreeStyle Libre 3 be worn on abdomen?

    The FreeStyle Libre 3 sensor is specifically designed and recommended to be worn on the back of the upper arm. It is not intended for placement on the abdomen.

    Always follow the instructions provided by the product or consult with your healthcare professional for proper sensor application. Using the sensor in a manner not recommended may affect its accuracy and performance.

  • Why can't the FreeStyle Libre Sensor be worn on the abdomen?

    The FreeStyle Libre Sensor is meant for the back of the upper arm, as tested in studies. Avoid using it on the abdomen, as it may impact accuracy and performance.

  • How I can get new sensors?

    You can order new sensors for Freestyle Libre 3 online easily through our UK-licensed online pharmacy, Ashcroft Pharmacy.

  • Where can I get a Libre 3 sensor?

    You can get the Libre 3 sensor online with 100% discretion and confidentiality through our UK-licensed online pharmacy, Ashcroft Pharmacy.


Best time to blood glucose level scan with freestyle libre 3 sensor:

  • Before and after meal or snacks
  • Before and after exercise or other physical activity
  • Before sleep and after waking up
  • When you feel symptoms of low glucose

What is MARD?

MARD, or Mean Absolute Relative Difference, is a way to check how well a device measures blood glucose levels. It looks at the average difference between what the device shows and the actual blood glucose levels, especially when they are normal to high.

A lower MARD is better because it means the device is closer to the real blood glucose levels. For example, on the first day of using the device, the MARD is 10% for adults and 10.7% for kids, showing that the device readings are quite close to actual blood glucose levels.

Throughout the time you wear the device, it continues to show really good accuracy. Almost all the readings (99.9%) fall within certain target zones (A and B), with a MARD of 9.2% for adults and 9.7% for kids. This means the device is consistently accurate during the entire wear period.

What's impressive is that this accuracy is achieved without needing to do finger prick calibrations or entering calibration codes. So, it's a convenient and accurate way to monitor glucose levels.

Freestyle Libre 3 Compatible devices and operating systems

Check here for full list:

FreeStyle Libre 3
(version 3.4, 3.5,
iPhone 7, 7 Plus, 8, 8 Plus, X, XR, XS, XS
Max, 11, 11 Pro, 11 Pro Max, 12, 12 Mini,
12 Pro, 12 Pro Max, SE (2020), 13, 13
Mini, 13 Pro, 13 Pro Max
iOS: 15.6, 15.6.1, 15.7,
15.7.1, 16, 16.0.2, 16.1,
16.1.1, 16.1.2, 17
FreeStyle Libre 3
(version 3.4.2, 3.5,
Samsung Galaxy S7, S7 Edge, S8, S8+,
S9, S9+, S10, S10e, S10+, S10 5G, S20,
S20+, S20 FE, S20 5G, S20+ 5G, S20 Ultra
5G, S20 FE 5G, S21, S21 5G, S21 Ultra 5G,
S21+ 5G, S21 FE 5G, S22, S22 Plus, S22
Ultra, Note8, Note9, Note10, Note10+,
Note10 Lite, Note10+ 5G, Note20 5G,
Note20 Ultra 5G, A5, A7 (2018), A10,
A20, A20e, A22, A23, A32, A32 5G, A40,
A41, A42 5G, A52, A52 5G, A52s 5G, A70,
A71, A71 5G, A72, J6, XCover 4, XCover
4s, Z Flip3 5G, Z Flip4, Z Fold2 5G, Z
Fold3 5G, Z Fold4
Android: 8*, 9*, 10*,
11, 12, 12.1, 13
 Huawei P10, P20, Mate 10 Pro, Mate 20
Pro, P30, P30 Pro, P smart
Android: 8*, 9*, 10*,
11, 12, 12.1, 13
 Xiaomi Mi 10T Pro 5G, Mi 10T Lite, Mi
Note 10 Lite, 11 Lite 5G NE, 11T Pro, 11T,
Poco X3 NFC, Poco F3, Redmi Note 8
Pro, Redmi Note 8T, 9 Pro, 10 Pro, 10 5G
Android: 8*, 9*, 10*,
11, 12, 12.1, 13
 Motorola moto g51 5G, moto g60s, one
Android: 8*, 9*, 10*,
11, 12, 12.1, 13
 Sony Xperia 1 IIIAndroid: 8*, 9*, 10*,
11, 12, 12.1, 13
 Honor 20Android: 8*, 9*, 10*,
11, 12, 12.1, 13


Compatible Smartwatch device list for Freestyle libre 3

FreeStyle Libre 3
(version 3.2.2)
iOS 15.2.1
Fitbit Versa 3Fitbit OS 5.3
FreeStyle Libre 3
(version 3.3, 3.3.1)
Android 11
Apple Watch Series 7WatchOS 8.3
FreeStyle Libre 3
(version 3.3, 3.3.1)
Android 11
Fitbit Versa 3Fitbit OS 5.3
FreeStyle Libre 3
(version 3.3, 3.3.1)
Android 11
Samsung Galaxy Watch 4Wear OS 3


Once your order has been approved by our UK medical team it will be dispatched via Royal mail. All orders are sent using a tracked and signed for service.

Royal Mail 48 | £3.49

Estimated delivery within 2-3 working days. Excludes bank holidays. Not a guaranteed service.

Free delivery on orders over £50.

RM 24 (Next working day)  | £4.99

Estimated delivery within 1 working day. Excludes bank holidays. Not a guaranteed service.

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