Table 1Plasma glucose cutoffs for diagnosis of IGT and IFG and DM for the varying criteria established at different times

FPGAND/OR2-hr PG after 75g OGTT
NDDG 79IGT< 7.8 mmol/L (140 mg/dL)AND7.8 to11.0 mmol/L (140 to199 mg/dl)
DM≥ 7.8 mmol/L (140 mg/dL)OR≥ 11.1 mmol/L (200 mg/dL)
WHO 80IGT< 8.0 mmol/L (144 mg/dL)AND8.0 to10.9 mmol/L 144 to196 mg/dL)
DM≥ 8.0 mmol/L (144 mg/dL)OR≥ 11.0 mmol/L (199 mg/dL)
WHO 85IGT<7.8 mmol/L (140 mg/dL)AND7.8 to11.0 mmol/L (140 to 199mg/dL)
DM≥ 7.8 mmol/L (140 mg/dL)OR≥ 11.1 mmol/L (200 mg/dL)
WHO 98/99IFG6.1 to 6.9 mmol/L (110 to125 mg/dL)--NA
I-IFG6.1 to 6.9 mmol/L (110 to125 mg/dL)AND< 7.8 mmol/L (140 mg/dL)
IGT< 7.0 mmol/l (126 mg/dL)AND7.8 to11.0 mmol/L (140 to199mg/dL)
I-IGT< 6.1 mmol/L (110 mg/dL)AND7.8 to 11.0 mmol/L (140 to199 mg/dL)
Combined IFG/IGT6.1 to 6.9 mmol/L (110 to125 mg/dL)AND7.8 to 11.0 mmol/L (140 to199 mg/dL)
DM≥ 7.0 mmol/L (126 mg/dL)OR≥ 11.1 mmol/L (200 mg/dL)
ADA 97/98IFG6.1 to 6.9 mmol/L (110 to125 mg/dL)--NA
I-IFG6.1 to 6.9 mmol/L (110 to125 mg/dL)AND< 7.8 mmol/L (140 mg/dL)
IGT<7.0 mmol/L (126 mg/dL)AND7.8 to11.0 mmol/L (140 to199 mg/dL)
I-IGT< 6.1mmol/L (110 mg/dL)AND7.8 to11.0 mmol/L (140 to199 mg/dL)
Combined IFG/IGT6.1 to 6.9 mmol/L (110 to125 mg/dL)AND7.8 to 11.0 mmol/L (140 to 199 mg/dL)
DM≥ 7.0 mmol/L (126 mg/dL)OR≥ 11.1 mmol/L (200 mg/dL)
ADA 2003IFG5.6 to 6.9 mmol/L (100 to 125 mg/dL)--NA
I-IFG5.6 to 6.9 mmol/L (100–125 mg/dL)AND< 7.8 mmol/L (140 mg/dL)
IGT<7.0 mmol/L (126 mg/dL)AND7.8 to 11.0 mmol/L (140 to 199 mg/dL)
I-IGT< 5.6 mmol/L (100 mg/dL)AND7.8 to 11.0 mmol/L (140 to 199 mg/dL)
Combined IFG/IGT5.6 to 6.9 mmol/L (100 to 125 mg/dL)AND7.8 to 11.0 mmol/L (140 to 199 mg/dL)
DM≥ 7.0 mmol/L (126 mg/dL)OR≥ 11.1 mmol/L (200 mg/dL)

Abbreviations: 2-hr PG=2 hour plasma glucose, ADA=American Diabetes Association, DM=Diabetes Mellitus, FPG=Fasting Plasma Glucose, IFG=Impaired Fasting Glucose, IGT=Impaired Glucose Tolerance, I-IFG =isolated Impaired Fasting Glucose, I-IGT=isolated Impaired Glucose Tolerance, NDDG=National Diabetes Data Group, OGTT=Oral Glucose Tolerance Test, WHO=World Health Organization.

From: 2, Methods

Cover of Diagnosis, Prognosis, and Treatment of Impaired Glucose Tolerance and Impaired Fasting Glucose
Diagnosis, Prognosis, and Treatment of Impaired Glucose Tolerance and Impaired Fasting Glucose.
Evidence Reports/Technology Assessments, No. 128.
Santaguida PL, Balion C, Hunt D, et al.

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