Cited by 55Diabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and ResearchDiabetes Treatment and Management

The utility of fasting glucose for detection of prediabetes

Cheng, Cynthia, Kushner, Harvey, Falkner, Bonita E.·2006·Metabolism

Abstract

Treatment of prediabetes attenuates progression to type 2 diabetes mellitus. The American Diabetes Association (ADA) previously defined prediabetes as either impaired fasting glucose (IFG) = 6.1 to 6.9 mmol/L (110-125 mg/dL) and/or impaired glucose tolerance (IGT) (2-hour postload glucose of 7.8-11.0 mmol/L [140-199 mg/dL]). For practical reasons, fasting plasma glucose (FPG) is commonly used for diabetes screening. Recently, the ADA lowered the fasting glucose threshold value for IFG from 110 to 100 mg/dL. Our objective was to determine the utility of FPG alone for detecting prediabetes in African Americans. Oral glucose tolerance test (OGTT) data from a cohort of 304 young adult African American men and women were examined. We calculated prediabetes prevalence using the previous ADA criteria and examined the effect of lowering the IFG threshold value for IFG to 100 mg/dL. The prediabetes prevalence in this cohort using the previous ADA criteria was 20.4% (n = 62). Of the 62 cases, 8 had IFG, 45 had IGT, and 9 had IFG together with IGT. Fasting plasma glucose testing alone detected 17 (27.4%) prediabetic cases, whereas a complete OGTT detected 54 (87.1%). Lowering the IFG threshold value to FPG = 100 mg/dL identified 13 of the 45 IGT-only cases. However, this lower IFG threshold increased prediabetes prevalence in the overall cohort from 20.4% to 31.9%. In conclusion, in young adult African Americans, an ethnic group at high risk for developing diabetes, FPG testing alone may be inadequate for diagnosing prediabetes. Until alternative strategies are identified, an OGTT is presently the best method for detecting the prediabetic condition in these high-risk patients.

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Crossref · 10.1016/j.metabol.2005.10.003

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Authors
Cheng, C., Kushner, H., & Falkner, B. E.
Affiliations
Thomas Jefferson University Hospital (US)
Corresponding author
Cheng, Cynthia
Venue
Metabolism
Publisher
Elsevier BV
Published
2006-04
Volume
55
Issue
4
Pages
434-438
ISSN
0026-0495 (ISSN-L)
OpenAlex
W2026531287
Cited by
55
References
27
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2021: 2 · 2020: 4 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 6 · 2015: 2 · 2014: 5 · 2013: 4 · 2012: 1
FWCI
3.17
Type
journal article
Language
en
Open access
closed
Locations
  • Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01HL051547, HL-51547)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-46107, R01DK046107)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
prediabetes, fasting blood glucose, impaired fasting glucose, impaired glucose tolerance, oral glucose tolerance test, type 2 diabetes, African Americans, prediabetes prevalence, diagnostic thresholds, diabetes screening
MeSH terms
Adult, Black or African American, Blood Glucose, Diabetes Mellitus, Type 2, Differential Threshold, Fasting, Female, Glucose Tolerance Test, Humans, Male, Prediabetic State, Cohort Studies, Prevalence

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