Gestational Diabetes Risk Assessment

At booking, your midwife may complete a gestational diabetes risk assessment, based on the HbA1c in your booking blood tests.

Recommendations

– low risk: HbA1c ≤40mmol/L at booking: oral glucose challenge test (polycose test) offered at 24-28 weeks

– increased risk: HbA1c 41-49mmol/L at booking: oral glucose tolerance test (OGTT) offered at 24-28 weeks

– probable undiagnosed diabetes: HbA1c ≥50mmol/L at booking: referral to diabetes in pregnancy team at booking

For more information

• This Te Whatu Ora guideline forms the basis of gestational diabetes screening in Aotearoa