Table 2.

Diagnosis of gestational diabetes mellitus with a 75-g oral glucose load

	mg/dl	mmol/l
Fasting	95	5.3
1 h	180	10
2 h	155	8.6

Two or more of the venous plasma concentrations must be met or exceeded for a positive diagnosis. The test should be done in the morning after an overnight fast of between 8 and 14 h and after at least 3 days of unrestricted diet (≥150 g carbohydrate/day) and unlimited physical activity. The subject should remain seated and should not smoke throughout the test