Update Type: Test Resumed
Test Updated: 08/11/2021
Test Overview
Test Methodology

Radioimmunoassay (RIA)

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).

Prediction of future need for insulin treatment in adult-onset diabetic patients.

Reference Range *

< or = 0.02 nmol/L

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

Test Details
Days Set Up
Monday - Friday
Analytic Time

4 days if negative; 9 days if positive

Soft Order Code
MiChart Code
Islet Antigen 2 (IA-2) Antibody (Sendout)
  • Islet Cell Antibody
  • ICA-512
  • Anti-IA2 Antibodies
Reference Laboratory
Mayo IA2
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in SST or red top tube. Centrifuge and aliquot ALL serum into a screw capped, leakproof plastic tube. Refrigerate (frozen also acceptable).

Normal Volume
2.0 mL serum
Minimum Volume
1 mL serum
Additional Information

Test sent to Mayo Medical Laboratories.

CPT Code
Fee Code