How is type 1 diabetes diagnosed?

    Researchedby:
    Mike Murray

    Fact-checked

    by:

    Morgan Pfiffner, Rob Stenstrom
    Last Updated: October 25, 2023

    Like T2D, T1D is diagnosed using blood tests to assess plasma glucose levels. A fasting plasma glucose, 2-hour plasma glucose during a 75-gram oral glucose tolerance test, or HbA1c value can be used to diagnose T1D. To differentiate T1D from T2D, a blood test is used to detect the presence of two or more autoantibodies, namely autoantibodies to insulin, glutamic acid decarboxylase, islet antigen 2, or zinc transport 8.[1]

    References

    1. ^American Diabetes Association Professional Practice Committee2. Classification and Diagnosis of Diabetes: Standards of Medical Care in Diabetes-2022Diabetes Care.(2022 Jan 1)