Glucose Reading Unavailable: Causes, Fixes & Prevention

Users of glucose monitoring systems, like the FreeStyle Libre, may encounter the message “glucose reading is unavailable, try scanning again in 8 hours.” This issue typically arises during the sensor’s initial calibration period or due to temporary sensor errors. Understanding and troubleshooting this message is crucial for effective diabetes management and maintaining accurate glucose monitoring.

Possible Causes

Here are some potential reasons for the message “glucose reading is unavailable, try scanning again in 8 hours”:

1. Sensor Calibration Period: When a new sensor is applied, it often requires a calibration period to adjust to your body. This can take up to 12 hours.

2. Temporary Sensor Errors: Sensors can sometimes experience temporary errors due to various factors like intense exercise or pressure on the sensor site.

3. Temperature Extremes: If the sensor is exposed to temperatures that are too hot or too cold, it might not function properly until it returns to an appropriate temperature.

4. Sensor Placement Issues: Incorrect placement or pressure on the sensor (e.g., sleeping on it) can affect its ability to read glucose levels accurately.

If these issues persist, it’s a good idea to consult the device’s support team for further assistance.

Immediate Actions

1. Wait the specified time: Allow the sensor to recalibrate by waiting the full 8 hours.
2. Check sensor placement: Ensure the sensor is properly placed and not dislodged.
3. Avoid pressure on the sensor: Make sure the sensor area is not under pressure, such as from sleeping on it.
4. Check temperature: Ensure the sensor is not exposed to extreme temperatures.
5. Use a blood glucose meter: While waiting, use a traditional blood glucose meter to monitor your levels.

If the issue persists after 8 hours, consider contacting customer support for further assistance.

Preventive Measures

Here are some tips to minimize the occurrence of the “glucose reading is unavailable, try scanning again in 8 hours” message:

1. Proper Sensor Application:

   • Apply the sensor to the back of your upper arm, avoiding areas with scars, moles, or excessive hair.
   • Ensure the skin is clean and dry before application.
   • Press the sensor firmly to ensure it adheres well.

2. Avoid Certain Activities:

   • Intense Exercise: Avoid intense physical activities immediately after applying the sensor as it may affect the readings.
   • Pressure on Sensor: Avoid sleeping on the side where the sensor is applied to prevent pressure that can disrupt readings.
   • Extreme Temperatures: Keep the sensor within the recommended temperature range to avoid errors.

3. Initial Calibration:

   • Allow the sensor to calibrate for at least 12 hours after application before relying on the readings.

By following these tips, you can help ensure more consistent and accurate glucose readings.

When to Seek Help

If the message “glucose reading is unavailable, try scanning again in 8 hours” persists beyond 12 hours after applying the sensor, users should contact customer support.

Glucose Reading Unavailable: Troubleshooting Steps

If you encounter the message ‘glucose reading is unavailable, try scanning again in 8 hours’, it’s likely due to sensor calibration, temporary errors, temperature extremes, or incorrect placement.

To resolve this issue, wait the specified time, check sensor placement and pressure, avoid extreme temperatures, and use a blood glucose meter for monitoring. If the problem persists, contact customer support.

To minimize occurrences of this message, apply sensors properly, avoid intense exercise, pressure on the sensor, and extreme temperatures, and allow at least 12 hours for initial calibration.

By following these steps, you can ensure more consistent and accurate glucose readings.