Serum insulin concentration in dogs with insulinoma as a clinical marker for presence of metastasis at the time of diagnosis.

Background: Information regarding serum insulin concentration in dogs newly diagnosed with insulinoma and its association with clinical stage and survival time is lacking.

Objective: Examine association between serum insulin concentration and survival and clinical disease stage in dogs with insulinoma.

Animals: Fifty-nine client-owned dogs with a diagnosis of insulinoma from 2 referral hospitals.