How does a doctor differentiate between type 1 diabetes and type 2…?

Also, are fasting blood sugar levels an accurate diagnostic test because i heard people with diabetes type 1 can have normal blood sugar levels from fasting but not after eating… is that true?
I know type 1 makes no insulin and type 2 makes little insulin but how does a doctor know? Are blood sugar levels higher in type 1 then in type 2? Is there a blood test to determine it?

3 Responses to “How does a doctor differentiate between type 1 diabetes and type 2…?”

  • Alisha:

    Normal blood sugar levels shouldn’t be true

  • Janez:

    Below is a link that should answer your question

    http://diabetes.niddk.nih.gov/DM/pubs/type1and2/

    The link below discribes the what type 1 and 2 are

    http://diabetes.niddk.nih.gov/DM/pubs/type1and2/what.htm

  • Mike5:

    the only real way a doctor can tell the difference, is if he runs a blood test to see if there are any ANTIBODIES present. If there are antibodies then you are type 1 diabetic because that means your immune system is killing your insulin producing cells with the antibodies. Type 2 diabetics do not have any anti-bodies which means they still produce insulin. OH and a person can have normal fasting blood sugars if that person already had insulin in him (like if he is a type 1 diabetic and still has long-acting insulin in him from the night before).

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