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What tests are used to diagnose diabetes when pregnant?

3 doctors weighed in
Dr. Miguel Cano
Obstetrics & Gynecology
2 doctors agree

In brief: 1 or 3 hour GTT

High risk patients are screened with a 1 hour 50 gm tolerance at first visit and everyone again after 24 weeks.
If this is high (over 140) a 3 hour glucose tolerance test (100 gm) is performed (fasting, 1, 2, & 3 hour blood draw). Depending on these results, your OB may start fingersticks 5 times per day and modify diet, exercise, and add Insulin if needed.

In brief: 1 or 3 hour GTT

High risk patients are screened with a 1 hour 50 gm tolerance at first visit and everyone again after 24 weeks.
If this is high (over 140) a 3 hour glucose tolerance test (100 gm) is performed (fasting, 1, 2, & 3 hour blood draw). Depending on these results, your OB may start fingersticks 5 times per day and modify diet, exercise, and add Insulin if needed.
Dr. Miguel Cano
Dr. Miguel Cano
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