In a pregnant woman, gestational diabetes is diagnosed on a 75 g OGTT at 24–28 weeks when the 2-hour plasma glucose value meets which threshold (WHO 2013 criteria)?

• A ≥7.8 mmol/L (140 mg/dL)
• B ≥11.1 mmol/L (200 mg/dL)
• C ≥8.5 mmol/L (153 mg/dL) ✓
• D ≥10.0 mmol/L (180 mg/dL)

Explanation

WHO 2013 diagnostic criteria for gestational diabetes on 75 g OGTT: fasting ≥5.1 mmol/L (92 mg/dL), 1-hour ≥10.0 mmol/L (180 mg/dL), or 2-hour ≥8.5 mmol/L (153 mg/dL). Any single value meeting or exceeding threshold is diagnostic. The 2-hour cut-off of 8.5 mmol/L (153 mg/dL) is distinct from the non-pregnant WHO diabetes threshold of 11.1 mmol/L and from the older Carpenter-Coustan criteria.

Reference: Williams Obstetrics, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.