Myelin-Associated Glycoprotein (MAG) Antibody (IgM), EIA

Myelin-Associated Glycoprotein, MAG, Sulfoglucuronyl Paragloboside, SGPG, MAG Dual Antigen Autoantibody Test, Myelin-Associated Glycoprotein (MAG) and Sulfoglucuronyl Paragloboside Evaluation, Myelin-Associated Glycoprotein Autoantibodies, IgM, Serum, MAG Antibody

Test Codes

EPIC: LAB1232073, Beaker: Myelin-Assoc, Quest: 37438

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.

Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at refrigerate (2-8°C or 36-46) prior to transport.

Preparation for Courier Transport

Transport: 1.0 mL serum, refrigerated at (2-8°C or 36-46°F). (Minimum: 0.2 mL)

Rejection Criteria

• Received room temperature.
• Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at refrigerate (2-8°C or 36-46) prior to transport.

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.2 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 4 days
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Quest Diagnostics, Wood Dale, IL.

Performed

Information not available.

Reference Range

<1:1600 titer

Normal	<1:1600
Moderately Elevated	1:1600-1:3200
Highly Elevated	≥1:6400

Test Methodology

Enzyme Immunoassay (EIA)

Interpretation

By report.

CPT Codes

83520 x2 (if needed).

Contacts

Last Updated

12/17/2025