Adrian Stefanescu and Pierre-Alexandre Bart
In this report, we describe a white man with symptomatic hypoglycemia whose medical work-up revealed an excessively elevated serum insulin level (867 mIU/l). The need to measure IAA in patients with extraordinarily high measured levels of total insulin is essential because of the possible artifactual elevation (in a conventional insulin immunoassay) caused by IAA. In the present case, the elevated IAA level (>50 kIU/l) confirmed the diagnosis of autoimmune hypoglycemia and allowed to avoid unnecessary surgical intervention.
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