It might be worth mentioning here the current ADA / WHO criteria for the diagnosis of diabetes mellitus.
Quote:
1. Symptoms of diabetes plus casual plasma glucose concentration 200 mg/dl (11.1 mmol/l). Casual is defined as any time of day without regard to time since last meal. The classic symptoms of diabetes include polyuria, polydipsia, and unexplained weight loss.
or
2. FPG 126 mg/dl (7.0 mmol/l). Fasting is defined as no caloric intake for at least 8 h.
or
3. 2-h postload glucose 200 mg/dl (11.1 mmol/l) during an OGTT. The test should be performed as described by WHO, using a glucose load containing the equivalent of 75 g anhydrous glucose dissolved in water.
In the absence of unequivocal hyperglycemia, these criteria should be confirmed by repeat testing on a different day. The third measure (OGTT) is not recommended for routine clinical use.
Source: Diagnosis and Classification of Diabetes Mellitus (ADA Supplement 28) - Table 2
FPG: fasting plasma glucose
OGGT: oral glucose tolerance test
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Jason
