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  • Q&A with Australian Health Practitioners

    How is gestational diabetes diagnosed?

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    Endocrinology Gestational Diabetes
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    • Diabetes Australia
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  • Diabetes Australia

    Diabetes Australia is the national peak body for diabetes in Australia providing a single, powerful, collective voice for people living with diabetes, their families and … View Profile

    There are two types of tests used to diagnose gestational diabetes.

    1. Glucose Challenge Test (GCT) – a blood test is performed one hour after consuming a glucose drink. If the result is considered high, you will be requested to have an oral glucose tolerance test.
    2. Oral Glucose Tolerance Test (OGTT) – this test is performed after fasting overnight. A blood sample is collected before, and at one and two hours after consuming a glucose drink.
    Some women will be tested earlier than 28 weeks if they have had gestational diabetes previously or are considered to be at a higher risk for developing gestational diabetes.

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