Whether you are a new user or considering switching, in this article we explain where to place the FreeStyle Libre sensor. That small, needle-free glucose measuring device that so many people with diabetes use daily to monitor their glucose comfortably and in real time. We will also tell you what it is and how to correctly read the data this glucose sensor provides. Additionally, we will give you some tips to protect it and ensure it lasts the full 14 days without problems.
What is the FreeStyle Libre sensor
The FreeStyle Libre sensor is a diabetes patch for the arm that measures glucose levels in the interstitial fluid (the fluid surrounding the cells, not in the blood). This glucose sensor is the size of a two-euro coin and is applied to the skin with the help of an applicator. Its lifespan is up to 14 days, and during that time it stores glucose data every 15 minutes.
Its main advantage is that you don’t need to prick your fingers to get results. Just by bringing the reader or a compatible smartphone close to the sensor, you get the measurement instantly. This way, you can detect patterns, anticipate lows, and maintain better overall control.
Where to place the FreeStyle Libre glucose sensor
If you still don’t know or have doubts about where to put the FreeStyle Libre sensor, pay attention, because we’re going to tell you here:
The recommendation is to place it exclusively on the back of the arm, as indicated by the manufacturer. More specifically, on the fleshy area between the shoulder and the elbow, avoiding the central triceps. Other areas are not validated and could alter glucose monitoring results.
Why this place? Because:
- It is an area with good interstitial fluid circulation.
- It has little muscle movement compared to other areas.
- It is easily accessible for both right-handed and left-handed users.
- Reduces the risk of the insulin sensor coming off due to rubbing or pressure.
Although sometimes it is heard that some users place the sensor on other parts of the body (such as the abdomen or thighs), this is not approved by the manufacturer and could affect the accuracy of the readings.
Besides its location, it’s essential that you know exactly how long a glucose sensor lasts to ensure continuous, uninterrupted monitoring.
How to place the sensor
Placing the FreeStyle Libre glucose sensor is a simple process, but it’s best to do it carefully:
- Wash and dry the area of your arm where you will place the sensor thoroughly.
- If you wish, gently shave the area to prevent hair from interfering with adhesion.
- Use the alcohol wipe included in the kit to disinfect the skin.
- Assemble the applicator according to the manufacturer’s instructions.
- Apply the sensor to your arm with a single firm, direct motion.
- Make sure it is well adhered but don’t press too hard. 7. To ensure it stays in place and lasts longer, use protective patches like those from Glucody, which help keep the sensor secure even if you sweat, swim, or exercise.
How to set up a new sensor on the glucose reader
After applying the sensor, you need to activate it using the official FreeStyle Libre reader or the mobile app:
- Open the FreeStyle Libre app on your smartphone and select the “Start new sensor” option from the main menu.
- Bring the reader or smartphone close to the sensor, hold it in place until the app confirms the reading (sound or vibration).
- Wait a few seconds until the device is detected. The system will display a message saying “Sensor activated successfully.”
- You should wait 60 minutes for the sensor to stabilize and start sending accurate glucose readings to your phone. During that first hour, the sensor is calibrating, so no data is obtained. This is completely normal.
- After that time, you can start scanning your levels.
How to measure glucose with the Freestyle Libre sensor
Once the no-prick glucose meter is activated, taking a measurement is as easy as bringing the reader close to the sensor. Do it as many times as you want, but remember the device automatically saves data only every 15 minutes.
You can use the specific reader or the official app, compatible with many Android and iOS phones; the system shows:
- Current glucose reading.
- Graph of the last 8 hours.
- Trend (rising, falling, or stable).
Meaning of the arrows in the glucose reading
In the reading, next to the glucose number, there is an arrow showing the direction your level is moving. These arrows are a powerful tool to anticipate:
- 🔼 Up arrow indicates that glucose is rising quickly.
- ➡️ Horizontal arrow means glucose is stable.
- 🔽 Down arrow indicates that glucose is dropping.
For example, if your glucose is at 90 mg/dL and the arrow points down, it might be a good time for a small snack, according to your meal plan.
How to keep the sensor protected?
Although the sensor is designed to withstand showers, sweat, and movement, it is recommended to protect it, especially if you exercise, go swimming, or simply live in a hot climate. Glucody protective patches are designed to:
- Increase adhesion.
- Protect against bumps or accidental snags.
- Allow the skin to breathe.
- Stay in contact with water without peeling off.
Live with freedom and confidence thanks to Glucody
Now that you know exactly where to place the Freestyle Libre insulin sensor and how to use it correctly, it will be easier for you to make the most of its benefits.
If you want to buy your protector for the glucose sensor and keep this tool that improves your quality of life protected, at Glucody we have everything you need: durable, comfortable, and secure patches tailored to your lifestyle.
Have questions? Write to us and we'll help you choose the best product for you.
