Active Care Medical TD-4121 Owner's Manual page 27

Alternative Site Testing
Important: There are limitations with AST (Alternative Site Testing). The
alternative site testing of the system can only be used in during steady-state
blood glucose conditions. Please consult your health care professional
before you perform AST.
Measurements from alternative site testing should never be used to
calibrate a continuous glucose monitoring systems (CGMs) or entered into
insulin dose calculators for insulin dosing recommendations.
What is AST?
Alternative site testing (AST) means that
people use parts of the body other than the
fingertips to check their blood glucose levels.
This system allows you to test on the palm, the
forearm, or the upper arm with results
equivalent to fingertip testing.
What is 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
condensed, you will not feel as much pain as
on the fingertips.
When to use AST?
Food, medication, illness, stress and exercise can affect blood glucose levels.
Capillary blood at the fingertip reflects these changes faster than capillary blood at
other sites. Thus, when testing blood glucose during or immediately after a meal,
physical exercise, or any other event, take a blood sample from your finger
only.
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