Why is the meter reading HI or LO?
If the meter displays “HI” your meter has determined that your blood glucose result is higher than 500 mg/dL or there may be a problem with the test strip. Monitor your blood glucose again with a new test strip. If “HI” shows on the display window again, contact your healthcare professional immediately. If the meter displays “LO” your meter has determined that your blood glucose result is lower than 20 mg/dL or there may be a problem with the test strip. Monitor your blood glucose again with a new test strip. If “LO” shows on the display window again, contact your healthcare professional immediately.