Use of HbA(1c) in screening for Cuban-Americans with undiagnosed type 2 diabetes

J Immigr Minor Health. 2011 Jun;13(3):541-5. doi: 10.1007/s10903-010-9363-3.


This study evaluated the use of HbA(1c) as a screening tool for undiagnosed type 2 diabetes (fasting plasma glucose ≥7.0 mmol/l) in a sample of Cuban-Americans aged ≥ 30 years old. Subjects were randomly recruited from Miami-Dade and Broward counties, FL. Fasting plasma glucose was measured by hexokinase enzymatic method. HbA(1c) was measured by the DCA2000 + system using the monoclonal antibody method. HbA(1c) demonstrated a high predictive value in detecting undiagnosed diabetes. The area under the receiver operating characteristics (ROC) curve was 0.87. Also, HbA(1c) had high sensitivity and specificity when using a cut off value of 6.37 (71 and 86%, respectively). Moderate sensitivity and very high specificity were shown with a cut off value of 6.84 (57 and 96%, respectively). HbA(1c) is a reliable alternative to fasting plasma glucose in screening for undiagnosed diabetes in Cuban-Americans.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adult
  • Aged
  • Biomarkers / blood
  • Blood Glucose / analysis
  • Diabetes Mellitus, Type 2 / blood
  • Diabetes Mellitus, Type 2 / diagnosis*
  • Diabetes Mellitus, Type 2 / ethnology
  • Female
  • Florida
  • Glycated Hemoglobin A / metabolism*
  • Hispanic Americans*
  • Humans
  • Male
  • Mass Screening / methods*
  • Middle Aged
  • Predictive Value of Tests


  • Biomarkers
  • Blood Glucose
  • Glycated Hemoglobin A