A 29-year-old woman at 26 weeks gestation undergoes a 75 g OGTT. Results: fasting 97 mg/dL, 1-hour 188 mg/dL, 2-hour 156 mg/dL. Using IADPSG/WHO 2013 criteria (thresholds: fasting 92, 1-hour 180, 2-hour 153 mg/dL — any one value meeting or exceeding threshold diagnoses GDM), how many criteria does she meet?
- A One criterion met (fasting only)
- B All three criteria met ✓
- C Two criteria met (fasting and 1-hour)
- D No criteria met; she does not have GDM
Correct answer: B. All three criteria met
Explanation
Applying IADPSG criteria: fasting 97 mg/dL exceeds 92 (met), 1-hour 188 mg/dL exceeds 180 (met), 2-hour 156 mg/dL exceeds 153 (met). All three thresholds are exceeded, so all three criteria are met. Under IADPSG/WHO 2013, meeting any single threshold diagnoses GDM; in this scenario all three are positive.
Reference: Williams Obstetrics, 26th ed.
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