70 is where I draw the line for low glucose level.  In your case I would
suggest a fasting blood glucose level.  If it is below 70 then it is time
to start treating her.  Since she is 7 years old, medical treatment may
be the best way to go (diet, pred, and proglycem).
 
Hope that helps,
Jerry Murray, DVM
 
URL of this message:
http://groups.yahoo.com/group/Ferret-Health-list/message/12834
[Posted in FML issue 3771]