>I'm not a vet.  However, I have twice had insulin levels and
>insulin/glucose ratios run on ferrets with "grey-zone" blood sugar levels
>to try to figure out if insulinoma was the culprit.  In both cases,
>insulin levels and the ratio were in normal range, but the ferret went
>on to surgery, where insulinoma was found and successfully treated.  I
>wish I was qualified to comment on *why* this is possible, but alas, I'm
>not.  Maybe someone else can explain it...
 
Insulin is released in spikes.  The reason a ferret can have insulinoma
and still have a normal insulin level is because of that - the blood was
just drawn at a time when the insulin release was at a low point.
 
Dr. Ruth
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Save lives - spay or neuter your pet.
[Posted in FML issue 3588]