ABOUT ALTERNATIVE SITE TESTING (AST)
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When to use AST?
Food, medication, illness, stress and exercise can affect blood glucose levels.
Capillary blood at fingertip reflects these changes faster than capillary blood at
other sites. Alternative site results may be different from fingertip results when
glucose levels are changing rapidly (e.g., after a meal, after taking insulin, or during
or after exercise). Therefore when testing blood glucose during or immediately
after a meal, physical exercise, or after taking insulin, take blood sample from
your finger only.
We strongly recommend you do AST ONLY in the following intervals:
•
In a pre-meal or fasting state (more than 2 hours since the last meal).
•
Two hours or more after taking insulin.
•
Two hours or more after exercise.
Important: There are limitations for doing AST.
Please consult your healthcare professional before
you do AST.
What is AST?
Alternative site testing (AST) means that people
use parts of the body other than fingertips to
check their blood glucose levels. This system
allows you to test on the palm, the forearm,
the upper arm, the calf, or the thigh with
the equivalent results to fingertip testing.
What’s the advantage?
Fingertips feel pain more readily because they are
full of nerve endings (receptors). At other body
sites, since nerve endings are not so concentrated,
you will not feel as much pain as at the fingertip.
Summary of Contents for TD-4227
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