Etiologic evaluation of hypoglycemia: Approach to interpreting the supervised fast when test endpoints are not achieved

BHB: beta-hydroxybutyrate.

* If test endpoints for the supervised fast are not achieved, findings may be sufficient to exclude an underlying hypoglycemic disorder. This requires that all procedures were completed, including serial blood sampling and performing glucagon challenge. Refer to other UpToDate content for a detailed protocol for the supervised fast.