Aims/Introduction: To evaluate whether hemoglobin A1c (HbA1c) levels are affected by hemoglobin level and gender. Materials and Methods: A cross-sectional analysis was carried out in a sample of 87,284 non-diabetic Koreans without anemia who participated in comprehensive health check-ups between January and December 2009 at the Kangbuk Samsung Hospital Total Healthcare Center in Seoul, Korea. W…