Glucose
Concentrations at Alternative Sites are Similar
Except For…….
Blood glucose monitoring at alternative sites is
consistent with fingertip results in the fasting
state and 120 minutes after eating but not at 60
minutes after eating or after exercise.
A group of investigators led by Dr Dawn Bina
of the International Diabetes Center in Minneapolis,
USA,
compared the concentration of blood glucose measured
at the forearm, palm, thigh and fingertip in 86
patients with type 2 diabetes.
Measurements
were taken in
a fasting state and at 60, 90 and 120 minutes
after eating. They were also taken after 15 minutes
of
exercise.
The investigators found that the concentration
of blood glucose was significantly different
at alternative
sites compared with the fingertip at 60 minutes
after eating (p=0.0003) and exercise (p=0.037).
At 60 minutes
after eating, the difference in the concentration
of blood glucose was –8.8+10.8% at the forearm
and –13.7+10.7% at the thigh, compared with
the fingertip. After exercise, the difference was
19.1+19.1% at the forearm and 15.6+22.6% at the thigh.
Measurements in the palm were similar to the fingertip
at all time points. The investigators found no significant
difference in the concentration of blood glucose
at alternative sites in the fasting state or at 90
minutes and 120 minutes after eating.
The investigators conclude that evaluating
concentrations of blood glucose at alternative
sites is consistent
with fingertip results in the fasting state
and 120 minutes after eating but not at 60
minutes
after
eating or after exercise. Diabetes Care 2003;26:981-5
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