How to Change Your FreeStyle Libre Sensor Early

I remember the day I had to change my FreeStyle Libre sensor earlier than expected. It was during a busy week when the sensor, usually my trusty companion in diabetes management, became loose and uncomfortable way before its time was up. This experience made me realize the importance of knowing how to change the sensor early and handle unexpected situations like this.

It’s situations like these that highlight not just the need for practical knowledge about our medical devices, but also for a reliable platform where we can manage our supplies efficiently. 

This is where Diabetics Trust comes in a trusted resource for those of us in the diabetes community looking to sell unused FreeStyle Libre sensors and readers. Their platform ensures that we have access to the supplies we need, when we need them, and offers a place to pass on unused items to others who can benefit from them.

Can You Change FreeStyle Libre Early?

“Can you change FreeStyle Libre early?” is a question many users find themselves asking. There are indeed situations where you might need to replace your sensor earlier than the standard wear period. This could be due to issues like the sensor becoming loose, irritation at the site, or inaccurate readings.

Circumstances for Early Sensor Change

  • Loose or Detached Sensor: If the sensor no longer adheres properly to the skin.
  • Skin Irritation or Allergic Reaction: Signs of redness, itching, or discomfort around the sensor area.
  • Inaccurate Glucose Readings: Consistently erroneous readings that could affect diabetes management.

Steps to Change FreeStyle Libre Sensor Early

  • Remove the Old Sensor: Carefully peel off the sensor from your skin. If it’s difficult to remove, you can use a little bit of oil or medical adhesive remover to ease the process.
  • Clean the Site: Once the sensor is off, clean the area with mild soap and water.
  • Prepare the New Sensor: Take your new FreeStyle Libre sensor and prepare it for application according to the manufacturer’s instructions.
  • Select a Different Site: Choose a different site from the previous one to avoid skin irritation.
  • Apply the New Sensor: Follow the standard procedure for applying the new sensor. Make sure it’s secure and properly positioned.
  • Activate the Sensor: Use your FreeStyle Libre reader or smartphone app to start the new sensor.

Handling Early Sensor Fall-Offs

It’s not uncommon to face the issue of a FreeStyle Libre sensor falling off early. Whether it’s due to an active lifestyle, improper application, or just bad luck, dealing with an early sensor detachment can be frustrating. Here’s what you can do if you find yourself in this situation.

What to Do If Your Sensor Falls Off Prematurely

  • Immediate Action: If your FreeStyle Libre sensor detaches before its expiration date, the first step is to safely remove any remaining adhesive from your skin.
  • Check for Reusability: Sometimes, if the sensor is still intact, it may be reattachable. However, this is rare, and generally, a new sensor is required.
  • Contact Manufacturer Support: In some cases, the manufacturer may replace the sensor at no cost, especially if it’s a product fault.

Tips for Preventing Early Sensor Fall-Offs

  • Proper Skin Preparation: Before applying the sensor, clean the area with an alcohol wipe and let it dry completely to ensure a clean, oil-free surface.
  • Apply on Recommended Sites: Place the sensor on parts of your body as recommended by FreeStyle Libre guidelines for better adherence.
  • Use Additional Adhesive Products: Consider using adhesive patches or tapes specifically designed for CGM sensors to secure the sensor.
  • Avoid Direct Pressure: When sleeping or dressing, try to avoid direct pressure on the sensor area.
  • Be Mindful of Activities: During high-impact activities or swimming, extra precaution or additional adhesive might be necessary to keep the sensor in place.

Starting a New FreeStyle Libre Sensor

Starting a new sensor on the FreeStyle Libre system can be a straightforward process, even for first-time users. Whether you’re replacing a sensor that has completed its lifespan or changing it earlier than planned, it’s important to know the correct procedure to ensure accurate readings and optimal sensor performance.

Step-by-Step Guide to Starting a New FreeStyle Libre Sensor

  • Choose an Appropriate Site: The back of your upper arm is the recommended site for the sensor. Avoid areas with scars, moles, or excessive hair.
  • Prepare the Site: Clean the area with an alcohol wipe and let it dry. This ensures the site is free from any oils or residue.
  • Unpack the New Sensor: Open the sensor package and use the applicator to apply the sensor.
  • Apply the Sensor: Place the applicator over the prepared site and push down firmly to insert the sensor.
  • Activate the Sensor: Use your FreeStyle Libre reader or the app to scan the new sensor. Follow the on-screen instructions to complete the setup.

Special Considerations for First-Time Users

  • Test for Allergies: If you have sensitive skin, monitor the site for any adverse reactions during the first few days.
  • Avoid Tight Clothing: Wear loose-fitting clothes around the sensor area to prevent dislodging.
  • Be Mindful of Sensor Life: Remember, each FreeStyle Libre sensor has a fixed lifespan. Note the date of application to keep track of when it’s due for replacement.
  • Data Gap: Be prepared for a data gap when you first apply the sensor. It takes time for the sensor to calibrate and start providing accurate readings.

Early Sensor Termination

“Why did my Libre sensor end early?” This is a common concern among FreeStyle Libre users. Unexpected early termination of a sensor can be disconcerting, especially when you rely on it for daily glucose monitoring. Understanding the reasons behind this and knowing how to troubleshoot can alleviate a lot of stress.

Reasons for Early Sensor Termination

  • Improper Application: If the sensor isn’t applied correctly, it might not function as intended.
  • Physical Impact: Bumping or knocking the sensor can dislodge it or affect its functionality.
  • Sensor Defects: Occasionally, a sensor might be defective out of the box.
  • Skin Issues: Reactions like sweating, moisture, or allergic reactions can compromise sensor adhesion.
  • Electronic Interference: Rarely, electronic interference from other devices could impact the sensor’s operation.

Troubleshooting Early Sensor Termination

  • Check the Application Site: Ensure the sensor was applied to a recommended area and was properly adhered.
  • Assess for Damage: Look for any visible signs of damage to the sensor.
  • Contact Support: If the sensor is defective, contacting FreeStyle Libre’s customer support can often lead to a replacement.
  • Monitor Skin Reactions: If skin reactions are a concern, consider using hypoallergenic patches or barriers next time.

Personal Tips for Managing Unexpected Sensor Changes

  • Be Prepared with Spares: I always keep a spare sensor handy in case of unexpected failures.
  • Document the Issue: Keeping a record of any issues helps when discussing replacements with customer service.
  • Stay Informed: Regularly check for any updates or tips from the FreeStyle Libre community that might help in better managing the sensors.

Reselling Unused FreeStyle Sensors and Readers

Did you know that your unused FreeStyle Libre sensors and readers could benefit others while also helping you recoup some costs? This is where Diabetics Trust steps in. It’s a platform specifically designed for the diabetes community to sell unused diabetic supplies like FreeStyle Libre sensors and Freestyle Libre readers.

How Diabetics Trust Facilitates the Resale of Unused Supplies

  • Listing Your Products: Simply sign up on the Diabetics Trust website and list your unused FreeStyle Libre sensors and readers.
  • Setting a Fair Price: You can set your price, ensuring it’s fair and competitive. Diabetics Trust offers guidance on pricing to help you make informed decisions.
  • Secure Transactions: The platform ensures secure and smooth transactions, providing peace of mind for both sellers and buyers.
  • Easy Shipping: Once your item sells, you’ll receive shipping instructions from Diabetics Trust for hassle-free delivery to the buyer.

Benefits of Using Diabetics Trust

  • For Sellers:
    • Turn your surplus supplies into financial returns.
    • Hassle-free selling process with secure transactions.
    • Reach a targeted audience looking for diabetic supplies.

Diabetics Trust not only offers a practical solution for managing your unused diabetic supplies but also fosters a sense of community support. By participating, you’re not just making a transaction; you’re contributing to a network of care and support within the diabetic community.


Navigating the world of FreeStyle Libre sensors, from understanding when and how to change them early to dealing with unexpected issues, can be a journey filled with learning and adaptation. We’ve covered essential topics like changing your FreeStyle Libre sensor early, handling early sensor fall-offs, starting a new sensor, understanding why a sensor might end prematurely, and the unique opportunity to resell unused sensors and readers through Diabetics Trust.

By sharing these insights, we aim to make your experience with FreeStyle Libre smoother and more informed. Your experiences, challenges, and solutions make this journey more enriching for the entire community. For a more detailed discussionon this topic visit our blog is it legal or not to sell diabetic test strips or you can visit to our website where you can get more insight on this topic in detail.