
9
Interpreting unexpected test results
Refer to the following cautions whenever your test results are
lower or higher than what you expect.
CAUTION:
Low glucose results
• If your test result is lower than 70 mg/dL, it may mean
hypoglycaemia (low blood glucose). Treat this condition
immediately, according to your healthcare professional’s
recommendations. Although this result could be due to a
test error, it is safer to treat first, then do another test.
• The Error 7 screen is displayed when your blood glucose
level is lower than 20 mg/dL. You may have severe
hypoglycaemia (very low blood glucose). If you re-test
your blood glucose and the Error 7 screen appears again,
this indicates a severe problem with your blood glucose
control. Obtain and follow instructions from your healthcare
professional immediately.
• If your blood glucose is high and you test when the
temperature is at the low end of the operating range 10°C,
the result on your meter may be lower than your actual
glucose level. Re-test in a warmer environment with a new
test strip as soon as possible.
Dehydration and low glucose results
• You may get false low glucose results if you are severely
dehydrated. If you think you are severely dehydrated,
contact your healthcare professional immediately.
High glucose results
• If your test result is higher than 180 mg/dL, it may mean
hyperglycaemia (high blood glucose) and you should
consider re-testing. Talk to your healthcare professional
if you are concerned about hyperglycaemia.
• The Error 8 screen is displayed when your blood glucose
level is higher than 600 mg/dL. You may have severe
hyperglycaemia (very high blood glucose). Re-test your
blood glucose. If the Error 8 screen appears again, this
indicates a severe problem with your blood glucose
control. Obtain and follow instructions from your
healthcare professional immediately.
Repeated unexpected glucose results
• If you continue to get unexpected results, check your
system with control solution. See Section C, Control
solution testing.
• If you are experiencing symptoms that are not consistent
with your blood glucose results and you have followed
all instructions in this Owner’s Guide, contact your
healthcare professional. Never ignore symptoms or make
significant changes to your diabetes control programme
without speaking to your healthcare professional.
Unusual red blood cell count
• A haematocrit (percentage of your blood that is red
blood cells) that is either very high (above 55%) or very
low (below 30%) can cause false results.