The utility of fasting plasma glucose in predicting glycosylated hemoglobin in type 2 diabetes.

Background: Access to glycosylated hemoglobin (HbA1c) assays in clinical practice remains limited. We investigated the relationship of fasting plasma glucose and HbA1c to determine optimal glucose levels for predicting HbA1c.

Patients And Methods: We retrospectively analyzed data on 2888 patients with type 2 diabetes mellitus aged >or=20 years using a linear regression of HbA1c against fasting plasma glucose.