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Diagnosis of gestational diabetes mellitus, WHO criteria (Ref. 1)
| Formal testing usually at 24-28 weeks' gestation. Standard 75 g oral glucose tolerance test performed after overnight fast (8-14h). Glucose concentrations (mmol/L): | ||||
| Whole blood venous | Whole blood capillary | Plasma venous | Plasma capillary | |
| Fasting | ≥6.1 | ≥6.1 | ≥7.0 | ≥7.0 |
| 2h | ≥6.7 | ≥7.8 | ≥7.8 | ≥8.9 |
