75-g 2-hour oral glucose tolerance test (OGTT)

at 24 to 28 weeks

tests per year, UK, once per pregnancy at 24 to 28 weeks (earlier as well after previous gestational diabetes)

“Offer women with any of the other risk factors for gestational diabetes (see recommendation 1.2.2) a 75-g 2‑hour OGTT at 24 to 28 weeks.”

NICE NG3, Diabetes in pregnancy: management from preconception to the postnatal period, section 1.2 Gestational diabetes, 2015-02

Kind of source

Clinical guideline

Read on

2026-11-06

Daily check

Quote found at the source on 2026-11-06

What to know

The diagnostic test. Women with previous gestational diabetes are tested as soon as possible after booking and again at 24 to 28 weeks if normal. Guideline last updated December 2020.

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