i-SENS CareSens N Owner's Booklet page 17

Things to know when using AST
Please understand the following before testing at alternative
sites (forearms, palms, thighs, and calves).
The capillary whole blood of the fingertips shows changes in
glucose levels more rapidly than in alternative sites. Therefore,
the test results from the fingertip test and alternative sites may
differ.
Acceptable situations for AST
When your blood glucose levels are stable
• Fasting period
• Before a meal
• Before sleeping
Situations requiring fingertip test
When your blood glucose levels are unstable
• D uring the two (2) hours after a meal or exercise
• W hen sick or when glucose levels seem quite lower
than test value
• W hen hypoglycemia is not well recognized
• When insulin has the biggest effect
• 2 hours after an insulin injection
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AST Precautions
• B efore using AST, please consult your healthcare
professional.
• D o not ignore the symptoms of hyperglycemia or
hypoglycemia.
• W hen the results of the test do not reflect your opinion,
retest using the fingertip test. If the fingertip result still does
not reflect the way you feel, please consult your healthcare
professional.
• D o not rely on the AST results for changing your treatment
method.
• T he amount of glucose in alternative sites differs from
person to person.
Note: Results from alternative site and fingertip samples
may differ from each other as there is a time lag for the
glucose levels to reach the same value. Use a fingertip for
testing if you suffer from hypoglycemia or have experienced
hypoglycemic shock or symptoms.
Note: If the sample drop of blood runs or spreads due to
contact with hair or with a line in your palm, do not use that
sample. Try puncturing again in a smoother area.
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