How to Apply Freestyle Libre Sensor? The Benefits of Applying in the Right Method

how to apply freestyle libre


Diabetes management has come a long way from traditional fingerstick testing. Continuous glucose monitoring (CGM) systems like Freestyle Libre offer a real-time view of glucose levels. In this way, it empowers individuals with diabetes to make informed decisions about their treatment and lifestyle.

However, most of the users want to know, how to apply Freestyle Libre. It is because they are unaware of the correct and the most efficient method of application. Let us delve into how to apply Freestyle Libre and discuss the benefits of the right application method. The process we are going to discuss will be applicable to both the Freestyle Libre 2 sensor as well as Libre 3 sensor.

Understanding Freestyle Libre

Freestyle Libre is a CGM system developed by Abbott Laboratories. It consists of a small, round sensor that is applied to the skin and a handheld reader or smartphone app for monitoring glucose levels. The sensor measures glucose levels in the interstitial fluid, providing data without the need for traditional fingerstick tests.

How does it work?

The Freestyle Libre sensor contains a tiny, flexible filament that is inserted just beneath the skin. This filament measures glucose levels in the interstitial fluid, which closely mirrors blood glucose levels. The sensor sends these readings to the reader or app, allowing users to track their glucose levels continuously.

Preparing for application

People who ask, ‘How to apply Freestyle Libre 14 day sensor’ must begin the process by preparing for the application. Here is a brief guide that you can consider for efficient preparations.

Gathering necessary supplies

Before applying a Freestyle Libre sensor, gather the following supplies:

  • Freestyle Libre sensor kit (includes sensor, applicator, and alcohol wipe)
  • Alcohol swab or prep pad
  • Adhesive tape or CGM patch (optional, for added security)
  • Reader or smartphone with the Freestyle Libre app

Site selection

Selecting the right application site is crucial for accurate readings and comfort. Common sites include the back of the upper arm and the abdomen. Avoid areas with scars, moles, or recent injections. Rotate your application sites to prevent skin irritation and ensure consistent results.

Precautions before applying the sensor

Want to know, how to apply Freestyle Libre sensor? First of all, it’s important to take certain precautions to ensure a safe and effective application. Here are key precautions to consider:

  • Check for skin sensitivities: Before applying the sensor for the first time, perform a patch test on a small area of your skin with the adhesive part of the sensor. Leave it for a short period (e.g., 24 hours) and check for signs of skin irritation, redness, or discomfort. If you notice any adverse reactions, consult with your healthcare provider for alternative application sites or products.
  • Rotate application sites: To avoid skin irritation or tissue buildup, it’s essential to rotate the sensor’s application site regularly. Do not apply the sensor to the same spot consecutively. This helps maintain accurate readings and reduces the risk of skin-related issues.
  • Ensure proper sensor storage: Freestyle Libre sensors should be stored according to the manufacturer’s instructions. Keep them in a cool, dry place and protect them from extreme temperatures, direct sunlight, and moisture. Avoid exposing the sensor to conditions that could compromise its effectiveness.
  • Confirm sensor expiration date: Check the expiration date on the sensor package before applying it. Using an expired sensor can lead to inaccurate readings and potential issues with glucose monitoring. Always use sensors that are within their specified shelf life.

Step-by-Step application

To apply Freestyle Libre appropriately, you can follow the following steps:

Cleaning the application site

Clean the chosen site with an alcohol swab or prep pad. Ensure the area is dry before proceeding.

Inserting the sensor

  • Remove the sensor from the kit and attach it to the applicator.
  • Remove the sensor’s protective cap.
  • Press the applicator firmly against the cleaned skin and push the button to insert the sensor.
  • Hold the applicator in place for a few seconds, then remove it, leaving the sensor on your skin.

Securing the sensor

While the sensor’s adhesive is generally sufficient, some users prefer added security with adhesive tape or patches. CGM patches are considered to be an excellent product in this regard. It is because they anchor the sensor firmly on your skin and increase its functional life without causing you any irritation. Ensure the sensor remains firmly attached to your skin.

Calibration and initialization

Once you are done applying the sensor and CGM patch, you can calibrate the device and initiate it. For this purpose, you can use the following steps:

Setting up the reader

If you are using a reader, turn it on and follow the on-screen instructions to set it up. This typically involves entering the sensor’s unique code, which can be found on the sensor package.

Initiating the sensor

After applying the sensor, initiate it by holding the reader or smartphone app close to the sensor. The initialization process may take a few minutes. Once complete, you will start receiving glucose readings.

Benefits of correct application

Users who want to know, how to apply Freestyle Libre, are aware of the benefits of the correct application. If you opt for the right application method, you can enjoy the following advantages:

Accurate glucose monitoring

Properly applied Freestyle Libre sensors provide accurate and reliable glucose readings. This precision is invaluable for making informed decisions about insulin dosing, dietary choices, and overall diabetes management.

Improved diabetes management

Continuous glucose monitoring allows for better diabetes management. By tracking glucose trends throughout the day and night, individuals can adjust their treatment plans in real time. Ultimately, they reduce the risk of hypoglycemia or hyperglycemia.

Enhanced quality of life

The convenience of Freestyle Libre cannot be overstated. Say goodbye to frequent fingerstick tests, as this CGM system offers a hassle-free alternative. Its discreet design and long wear duration provide a more comfortable and less intrusive way to manage diabetes.


The correct application of Freestyle Libre devices is essential for harnessing the full benefits of this revolutionary CGM system. By understanding how to apply Freestyle Libre, and how this device works, an individual with diabetes can enjoy accurate glucose monitoring.

Moreover,  it ensures improved diabetes management and an enhanced quality of life. With Freestyle Libre, managing diabetes has never been more convenient and effective. Embrace this technology, apply it correctly, and take control of your diabetes management journey.

Now, as you are aware of the application process of Freestyle Libre sensors, you may need to buy these devices. You can buy Freestyle Libre 3 sensor online from our website at market-competitive rates. Apart from this product, we also supply other CGM devices to improve your diabetes management. You can also check them out.

Frequently Asked Questions

What is Freestyle Libre, and how does it work?

Freestyle Libre is a continuous glucose monitoring (CGM) system by Abbott Laboratories. It consists of a sensor placed beneath the skin, measuring glucose levels in interstitial fluid. The sensor sends real-time data to a handheld reader or smartphone app, eliminating the need for traditional fingerstick tests.

How should I prepare for applying a Freestyle Libre sensor?

Prepare by gathering the Freestyle Libre sensor kit, alcohol swab, optional adhesive tape or CGM patch, and the reader or smartphone with the app. Ensure your chosen application site is clean and free from scars or moles, and rotate sites to prevent skin irritation.

What are the steps to apply a Freestyle Libre sensor?

Clean the site with an alcohol swab, insert the sensor using the applicator, and secure it. Optionally, use adhesive tape or CGM patches for added security. Then, calibrate and initialize the device following the provided instructions.

How do I set up the reader for Freestyle Libre?

If you are using a reader, turn it on and follow the on-screen instructions, which typically involve entering the sensor’s unique code found on the sensor package.

How long does the initialization process take after applying the sensor?

The initialization process may take a few minutes. Once complete, you will start receiving glucose readings.

What are the benefits of correctly applying Freestyle Libre?

Properly applied Freestyle Libre sensors offer accurate glucose monitoring, improved diabetes management by tracking trends, and an enhanced quality of life with less intrusive monitoring compared to fingerstick tests.

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