Re: Pergolide in non IR Cushings Horses
Eleanor Kellon, VMD
A reference range is the average value plus 2 standard deviations on either side of the results found in a group of horses that appear to be normal. It's a statistical value, not a definition of normal. With some values, like blood pH, that are tightly controlled there is good overlap between the reference range and normal but insulin is a moving target. Eating, type of meal, time since eating, exercise, fasting, any stress, transport all have a significant effect on insulin but the horse would still appear to be normal.
Eleanor in PA