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Search and find answers to frequently asked questions about FreeStyle Libre systems.

What substances could interfere with the results generated by the FreeStyle Libre system?

  • Use of products containing ascorbic acid and salicylic acid on the Sensor location may interfere with the Sensor glucose readings.
  • Taking ascorbic acid while wearing the Sensor may falsely raise the Sensor glucose readings.
  • Taking salicylic acid may slightly lower the Sensor glucose readings.
  • In either case, the level of inaccuracy depends on the amount of the interfering substance active in the body.
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