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Gestational diabetes diagnostic criteria (IADPSG)

Endocrinology

Also known as: Diagnosekriterien Gestationsdiabetes (75-g-oGTT) · Gestasyonel diyabet tanı kriterleri (IADPSG) · Diagnostic criteria for gestational diabetes (IADPSG / WHO 2013 one-step 75 g OGTT)

What it is for

Gestational diabetes mellitus (GDM): diabetes first diagnosed in the second or third trimester that was not clearly overt before pregnancy. One-step method: 75 g oral glucose tolerance test (OGTT) at 24–28 weeks after an overnight fast of at least 8 hours, venous plasma glucose; one value at or above a threshold is enough.

Classification

CategoryDescription
Fasting≥92 mg/dl (≥5.1 mmol/l).
1 hour≥180 mg/dl (≥10.0 mmol/l).
2 hours≥153 mg/dl (≥8.5 mmol/l).
Overt (pre-existing) diabetes in pregnancyfound early in pregnancy with the non-pregnant criteria (e.g. fasting ≥126 mg/dl, random ≥200 mg/dl, HbA1c ≥6.5%); classed as diabetes complicating pregnancy, not GDM.
Other methodthe ADA also accepts a two-step approach (50 g non-fasting screen, then a 100 g OGTT).

Source

International Association of Diabetes and Pregnancy Study Groups recommendations on the diagnosis and classification of hyperglycemia in pregnancy

Diabetes Care 2010;33:676–682 (IADPSG Consensus Panel, Metzger BE et al.)

DOI: 10.2337/dc09-1848

PMID: 20190296

Edition
IADPSG 2010, adopted by WHO 2013, ADA Standards of Care 2026 (one-step) and ÖDG 2023
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