Oral Glucose Tolerance Test (OGTT)

A first sample is taken fasting; then you drink a glucose solution (usually 75 g) and further samples are taken after one and two hours while you rest at the lab.

It is usually ordered between weeks 24 and 28 of pregnancy, or when fasting sugar is borderline. The test takes about two and a half hours, so it is done at the branch only.

Preparation before the test

• Fast at least 8 hours (water only).
• Eat normally (including carbohydrates) for the 3 days before.
• Stay seated and do not smoke during the test.

This information is for awareness only and is not a substitute for medical advice — your treating doctor interprets the result for your case.