Step one |
1. Give 50 gram oral glucose solution without regard to time of day. |
2. Measure venous plasma or serum glucose concentration at one hour after administration. |
3. Glucose ≥135 mg/dL (7.5 mmol/L) or ≥140 mg/dL (7.8 mmol/L) is elevated and requires administration of a 100 gram oral glucose tolerance test.* The lower threshold provides greater sensitivity, but would result in more false positives and would require administering the full glucose tolerance test to more patients than the 140 mg/dL threshold. The lower threshold should be considered in populations with higher prevalence of gestational diabetes. |
Step two |
1. Measure fasting venous plasma or serum glucose concentration. |
2. Give 100 gram oral glucose solution. |
3. Measure venous plasma or serum glucose concentration at one, two, and three hours after administration. |
4. A positive test is generally defined by elevated glucose concentrations at two or more time points (either Carpenter and Coustan thresholds or National Diabetes Data Group thresholds can be used). |
Do you want to add Medilib to your home screen?