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Re: [IP] Alternate Site Testing: was Freestyle accuracy

>>>From: DR Birdsall <email @ redacted>
It is well documented that measurements of BG from samples taken at
different locations in the body do not exactly match.  One would hope for
a high degree of repeatability from each method, producing a constant
difference in values obtained from alternate methods.  The comparisons
I made above refer to a variable amount of discrepancy.<<<

"Patients consider forearmglucose testing a major step forward in the
management of diabetes, as drawing blood from the forearm is less painful
than using fingersticks.  In this study, though, the authors demonstrate
that forearm testing has an important deficit.  During rapidly changing
glucose concentrations, tested durint insulin-induced hypoglycemia, there is
lag between the fingerstick and the forearm value by as much as 6 mmol/l
(110 mg/dl) in individual patients.  This is an important clinical issue now
that multiple devices have become available for forearm glucose testing."
Diabetes Care, June 2002

John Kinsley
Type 1 - 1956
MiniMed 507 - 1998
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