Diabetes diagnosis in dogs and cats

A diagnosis of canine diabetes mellitus is based on persistent fasting hyperglycemia and glycosuria. The normal fasting value for blood glucose in dogs and cats is 75-120 mg/dL. In cats, stress-induced hyperglycemia is a frequent problem, and multiple blood and urine samples may be required to confirm the diagnosis. Measurement of serum glycosylated hemoglobin or fructosamine (or both) can assist in differentiating between stress-induced hyperglycemia and diabetes mellitus. In all cases, a search should be made for drugs or diseases that predispose to diabetes.

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