Glycated Hemoglobin Testing to Identify Undiagnosed Diabetes Mellitus in the Inpatient Setting.

Background: Hyperglycemia is commonly seen in hospitalized patients. Glycated hemoglobin (HbA1c) correlates with the average blood glucose level over the previous 8 to 12 weeks. Thus, an HbA1c test offers a longitudinal view that reduces etiologic ambiguity of disease.