Update Type: Specimen collection or handling and/or storage changed
Test Updated: 08/19/2026
Test Overview
Test Methodology

Enzyme-Linked Immunosorbent Assay (ELISA)

Test Usage

Clinical distinction of type 1 from type 2 diabetes mellitus, Identification of individuals at risk of type 1 diabetes (including high-risk relatives of patients with diabetes, and those with gestational diabetes),
Prediction of future need for insulin treatment in adult-onset diabetic patients

Reference Range *

<15.0 U/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Tuesday and Thursday
Analytic Time

4 - 8 days

Soft Order Code
FZNT8
MiChart Code
Zinc Transporter 8 (ZnT8) Antibody
Synonyms
    Laboratory
    Sendout Testing
    Reference Laboratory
    Mayo EZNT8
    Section
    Sendout Testing
    Specimen Requirements
    Collection

    Collect specimen in Red top or SST tube. Spin and aliquot into a screw capped plastic tube. Send to Specimen Processing frozen.

    Collection Instructions

    Collect specimen in red top or SST tube. Spin within 45 minutes of draw and aliquot into a screw capped plastic tube. Send to Specimen Processing refrigerated.

    Normal Volume

    2 mL serum

    Minimum Volume

    1 mL serum

    Storage Temperature
    STRICT FROZEN
    Additional Information

    Test performed by Mayo Clinic Laboratories

    Billing
    CPT Code
    86341
    Fee Code
    AA634
    NY State Approved
    No