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Measurement of insulin and glucose from a fasting sample.  This test is used for a diagnosis of insulinoma in dogs, cats, and ferrets and an indicator of metabolic syndrome in horses. Also used to document insulin resistance, especially in horses suspected of pituitary adenoma.

Measurement of insulin like growth factor 1 hormone (IGF-1). Results are useful in the diagnosis of acromegaly (growth hormone excess) or dwarfism (growth hormone deficiency).