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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Obstet Gynecol. 2016 May;127(5):893–898. doi: 10.1097/AOG.0000000000001383

Table 1.

Diagnostic criteria for 3-hour glucose tolerance test.

Time of Testing Carpenter-Coustan National Diabetes Data Group
Fasting 95 105
1-Hour 180 190
2-Hour 155 165
3-Hour 140 145

At least 2 levels must be greater than or equal to the thresholds listed. All thresholds presented as mg/dL.