What are the diagnostic criteria for gestational diabetes in pregnant women?

Patient's question:

When I first got pregnant, I went to the Maternal and Child Health Hospital for a blood test. The doctor said that the detailed test results showed slightly high sugar levels in my blood. I am now 27 weeks pregnant and will go to the hospital again for a blood test. Currently, it is not yet confirmed whether I have gestational diabetes. What are the diagnostic criteria for gestational diabetes in pregnant women?

Doctor's answer:

According to the situation you described, you mentioned this blood sugar without specifying whether it is fasting blood sugar or postprandial blood sugar. If it is fasting blood sugar, it is necessary to repeat the test carefully the next day as soon as possible to confirm the diagnosis. If the fasting blood sugar is still below 7 mol/L, and there was no diabetes before early pregnancy, then the possibility of gestational diabetes is relatively high. Additionally, it is necessary to conduct a glycosylated hemoglobin test, measure body weight, and perform a comprehensive evaluation to make an inference.

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