Skip to content
Blood Test Tracker

Diabetes Autoantibody Panel

Islet autoantibodies used to classify type 1 diabetes and screen relatives.

5 tests explainedAlso printed as Type 1 Diabetes Autoantibodies, Islet Autoantibody Panel, T1D Antibody Panel

Check your whole panel

Type the results from your report. Each one is placed on its usual range, with its status in words.

Type the results from your Diabetes Autoantibody Panel report. Each one is placed on its usual range as you type.

  • U/mL
  • U/mL
  • U/mL
  • U/mL

Nothing you type here leaves your browser. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

The 5 tests in this panel

What each one measures and the range labs usually print for adults. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

  • GAD65 Antibody (Glutamic Acid Decarboxylase)

    Measures antibodies to GAD65, an enzyme in insulin-making cells and nerves; it is one of the islet antibodies used to look for autoimmune (type 1) diabetes.

    Adults
    0–5 U/mL

  • IA-2 Antibody (Islet Antigen-2)

    Measures antibodies to IA-2, a protein in insulin-making cells, which is one of the islet antibodies used to look for autoimmune (type 1) diabetes.

    Adults
    0–7.4 U/mL

  • ZnT8 Antibody (Zinc Transporter 8)

    A blood test for antibodies against zinc transporter 8 (ZnT8), a protein in insulin-making cells. A positive result is linked to type 1 diabetes.

    Adults
    0–15 U/mL

  • Insulin Autoantibodies (IAA)

    Measures antibodies to insulin, used to look for autoimmune (type 1) diabetes before insulin treatment or to find antibodies to injected insulin.

    Adults
    0–0.4 U/mL

  • C-Peptide

    C-peptide is released along with insulin, so it shows how much insulin your own pancreas is making, even if you take insulin.

    Adults
    0.8–3.9 ng/mL

Labs can include one more test in this panel that we haven’t written up yet.