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A further revision has been published recently (9). This report, accompanied by a American Diabetes Association (ADA) report (10), has generated yet another round of debate with a new classification and a revision of criteria resulting in 1) the fasting plasma glucose threshold for diabetes being lowered from 7.8 to 7.0 mmol/L and 2) impaired fasting glycemia (fasting plasma glucose: 6.1-6.9 mmol/L) was introduced as a new category for abnormal glucose metabolism (called impaired fasting glucose by the ADA), above "normal" but not diagnostic of diabetes.

The ADA (but not the WHO) report recommended that the FPG rather than the oral glucose tolerance (OGTT) should be the diagnostic test of choice both for clinical and epidemiologic purposes. The ADA recommendation was mainly made on the basis of inconvenience of performing the OGTT in clinical practice. This has kept the epidemiology field alive and forms the basis for plenty more papers!!