Table of Contents
Continuous Glucose Monitoring (CGM) devices provide real-time blood sugar data, but sometimes the readings can become erratic. Understanding the common causes of these fluctuations can help users troubleshoot and improve accuracy.
Sensor Placement and Positioning
Incorrect placement or movement of the sensor can lead to inconsistent readings. Sensors should be placed on clean, dry skin in areas recommended by the manufacturer. Avoid areas with excessive movement or where the skin is thick or scarred.
Calibration and Device Settings
Proper calibration is essential for accurate CGM data. Follow the device’s calibration instructions carefully, and ensure that calibration is performed at appropriate times. Incorrect calibration can cause fluctuations in readings.
Interference and External Factors
External factors such as certain medications, high doses of vitamin C or E, and exposure to extreme temperatures can interfere with sensor readings. Keep the device away from sources of electromagnetic interference and follow manufacturer guidelines.
Battery and Device Maintenance
Low battery levels or outdated device firmware can affect sensor performance. Regularly check and replace batteries, and keep the device updated with the latest software to ensure optimal functioning.
Sensor Lifespan and Replacement
Sensors have a limited lifespan, typically around 7 to 14 days. Using a sensor beyond its recommended duration can cause inaccurate readings. Replace sensors promptly to maintain data reliability.