Abbott Freestyle Fredom Owner's Booklet page 6

Important Health-Related Information
• Changes in blood glucose may be observed in finger or palm (at
the base of the thumb) blood samples sooner than blood samples
from the forearm and other alternative sites. Vigorous rubbing of
the alternative test sites before lancing will help to minimize the
difference between finger or palm (at the base of the thumb) and
alternative site test results. The palm (at the base of the thumb) is an
alternative site that does not require vigorous rubbing before testing.
• Physiologic differences in the circulation between the finger or
palm (at the base of the thumb) and other test sites like the forearm,
upper arm, top of hand, thigh, and calf may result in differences in
blood glucose measurements from these test sites and your finger
or palm (at the base of the thumb). Differences in blood glucose
measurement between the other test sites and your finger or palm
(at the base of the thumb) may be observed after eating, insulin
medication, or exercise.
WARNING:
We recommend that you test on your fingers or palm (at the base
of the thumb) if you are testing for hypoglycemia (low blood
glucose) or if you suffer from hypoglycemia unawareness.