Accu-Chek Performa Owner's Booklet page 61

The code chip is incorrect. Turn the meter off and insert a new code chip.
Your blood glucose may be extremely high or a meter or a test strip error has occurred.
• If your test result matches how you feel, contact your healthcare professional immediately.
• If your test result does not match how you feel, repeat the blood glucose test and see
Chapter 2, Unusual Blood Glucose Results.
• If the E-3 code still appears for your blood glucose test, your blood glucose result may
be extremely high and above the system's reading range. Contact your healthcare
professional immediately.
• If the second test result does not match how you feel, perform a control test with the
control solution and a new test strip.
• If the control result is within the acceptable range, review the proper testing
procedure and repeat the blood glucose test with a new test strip.
• If the control result is not within the acceptable range, see Chapter 4,
Understanding Out-of-Range Control Results.
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