Why are my glucose levels different when I compare data from 2 CGMs?

Written by Lukas
Updated 10 months ago

If you use multiple sensors in succession, you may notice differences in the baseline or your sensor data. These differences can have several reasons:

  1. For example, this may be because the sensor was placed in a different location on the upper arm (Therefore, there may be slight differences between sensors as well). The differences are due to the sensor and we are working with the manufacturer Abbott to find a solution and have the data aligned in the future.
  2. It can also be due to the fact that your body is exposed to other influences and therefore values are different. For example, if you are under stress for a longer period of time, your values tend to be higher. Also, deviations in values can occur when you are sick, for example.
  3. There can always be larger fluctuations in glucose values in the first 24-28 hours after attaching a new sensor. These then slowly level out.

Taking all these factors into account, a deviation of about 10-15% is normal.
Your findings are not distorted by this, as the tendency and trend are equally recognizable and support you in adjusting your lifestyle and researching your health. If these deviations are significantly larger over several days, please contact us.

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