Screening for and diagnosis of GDM
Carry out GDM risk assessment at the first prenatal visit. |
Women at very high risk for GDM should be screened for diabetes as soon as possible after the confirmation of pregnancy. Criteria for very high risk are:
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Screening/diagnosis at this stage of pregnancy should use standard diagnostic testing (Table 2) |
All women of higher than low risk of GDM, including those above not found to have diabetes early in pregnancy, should undergo GDM testing at 24–28 weeks of gestation. Low risk status, which does not require GDM screening, is defined as women with all of the following characteristics:
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Two approaches may be followed for GDM screening at 24–28 weeks:
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The 100-g OGTT should be performed in the morning after an overnight fast of at least 8 h. |
A diagnosis of GDM requires at least two of the following plasma glucose values:
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