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How is type 2 diabetes diagnosed?

Community Answers
  • Kelly Dabel, RD moderator
    3 years ago

    You may be having symptoms of excessive thirst with frequent urination or even blurred vision. Or some people may not notice any symptoms at all. Your doctor will typically start with a routine blood test to measure your blood sugar levels. If diabetes is suspected, your doctor may also check your HgbA1c to give a picture into what your average blood sugar has been for the past few months. Here is a great article that gives an overview of how diabetes is diagnosed and explains the lab work involved:

  • Meryl Krochmal, RD, CSP, CDE, CNSC moderator
    3 years ago

    There are several ways to diagnose diabetes. Each way usually needs to be repeated on a second day to diagnose diabetes. This will be determined by your physician.

    • A1c (average blood glucose over the last 3 months) of 6.5 % or greater
    • Random blood glucose of > 200 mg/dL with A1:D22 (increased thirst, increased urination, fatigue, weight loss, increased hunger)
    • Fasting blood glucose of > 126 mg/dL
    • Oral Glucose Tolerance Test: blood glucose of > 200 mg/dL 2 hours after 75 grams of oral glucose solution is consumed
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