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Biomarkers · Chemical

GAD-65

Primary unit
U/mL
LOINC codes
56540-8
Tests that measure GAD-65
Labcorp 2, Quest Diagnostics 2

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Diabetes Type 1 Autoantibody Panel 13621

PopulationInterval
Glutamic Acid Decarboxylase 65 Ab<5 IU/mL
Insulin Autoantibody<0.4 U/mL
IA-2 Antibody<5.4 U/mL
Zinc Transporter 8 (ZnT8) Antibody<15 U/mL

Quest Diagnostics test catalog, 13621

Tests

Check the catalog code, specimen, method and preparation for every test that measures GAD-65. Select up to five tests to compare them side by side.

Labcorp 2 tests

Single-analyte tests

  • Glutamic Acid Decarboxylase (GAD) Autoantibody 143008

    Serum · Fasting not stated · Turnaround 3 - 4 days

    Method and collection
    Method
    Enzyme-linked immunosorbent assay (ELISA)
    Collection
    If a red-top tube is used, transfer separated serum to a plastic transport tube. Avoid hemolysis.
    Reference notes
    Pediatric and adult: 0.0−5.0 units/mL
    Labcorp catalog page

Panels that include this biomarker

  • Diabetes Autoimmune Profile 504050

    4 analytes · Serum · Fasting not stated · Turnaround 8 - 15 days

    Method and collection
    Method
    Enzyme-linked immunosorbent assay (ELISA), radioimmunoprecipitation
    Collection
    Transfer specimen to a plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple test on frozen samples, please submit separate frozen specimens for each test requested.
    Labcorp catalog page

Quest Diagnostics 2 tests

Single-analyte tests

  • Glutamic Acid Decarboxylase-65 Antibody 34878

    Serum · Fasting not stated · Turnaround Set up: Mon, Wed, Fri (p.m.); Report available: 8 days

    Method and collection
    Method
    Enzyme Linked Immunosorbent Assay (ELISA)
    Reference notes
    <5 IU/mL
    Quest Diagnostics catalog page

Panels that include this biomarker

  • Diabetes Type 1 Autoantibody Panel 13621

    4 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Enzyme Linked Immunosorbent Immunoassay (ELISA) • Radiobinding Assay (RBA)
    Quest Diagnostics catalog page

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Sources

Check the guidelines, studies and lab catalogs behind every range and link on this page. Open a source to see each claim it backs.

Lab catalogs

Codes and registries

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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