Table 1.

Summary of the different recommendations for the diagnosis of gestational diabetes mellitus (GDM) during the COVID-19 pandemic.

	First Prenatal Visit. Early GDM	GDM
	Glucose Measured before 20 Weeks	Glucose Measured after 24 Weeks
Australia [1]	HbA1c ≥ 5.9% (41 mmol/mL)	FPG: <84 mg/dL (<4.7 mmol/L) → Non GDM FPG: 84–91 mg/dL (4.7–5 mmol/L) → OGTT FPG: ≥92 mg/dL (5.1mmol/L) → GDM
Italy [2]	FPG ≥ 92 mg/dL (5.1 mmol/L)	FPG ≥ 92 mg/dL (5.1 mmol/L)
European Society of Endocrinologists [3]	HbA1c: 5.9–6.4% (41–47 mmol/mL) or RPG: 162–200 mg/dL (9–11 mmol/L)	HbA1c ≥ 5.7% (≥ 39 mmol/L) or RPG ≥ 162 mg/dL (≥ 9 mmol/L) FPG ≥ 100 mg/dL (≥ 5.6 mmol/L)
Spain [4]	HbA1c: 5.9–6.4% (41–47 mmol/mL) or RPG: 165–199 mg/dL (9.2–11 mmol/L) or FPG: ≥100 mg/dL (≥5.6 mmol/L)	HbA1c ≥ 5.7% (≥39 mmol/L) or RPG: 165–199 mg/dL or FPG ≥ 95 mg/dL (≥5.3 mmol/L)
United Kingdom [5]	HbA1c: 5.9–6.4% (41–47 mmol/mL) or RPG: 162–200 mg/dL (9–11 mmol/L)	HbA1c ≥ 5.7% (≥39 mmol/L) or RPG ≥ 162 mg/dL (≥9 mmol/L) FPG ≥ 100 mg/dL (≥5.6 mmol/L)
Canada [6]		HbA1c ≥ 5.7% (≥39 mmol/L) or RPG ≥ 200 mg/dL (≥11.1 mmol/L)
New Zealand [7]	HbA1c ≥ 5.8% (40 mmol/mL)	FPG: <81 mg/dL (<4.5 mmol/L) → Non GDM FPG: 81–90 mg/dL (4.7–5 mmol/L) → CGT FPG: ≥90 mg/dL (≥5 mmol/L) → GDM

HbA1c: gycosylated hemoglobin A1c; FPG: fasting plasma glucose; RPG: random plasma glucose; CGT: capillary glucose testing; GDM: gestational diabetes.