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What do HI and LO results mean?

The HI and LO are symbols that indicate when results are beyond the reportable range. HI will be displayed when the result is above 400 mg/dL. LO will be displayed when the result is below 40 mg/dL. If you see "HI" or "LO" please check your blood glucose on your finger with a test strip. If you get a second LO or HI result after doing a blood glucose test, contact your healthcare professional immediately1.

1 FreeStyle Libre 3 User's Manual.


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